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Vol. 49 N° 20 Octobre 2010 |
Vol. 49 N° 16 Août 2010 |
Vol. 49 N° 19 Octobre 2010 |
Vol. 49 N° 18 Septembre 2010 |
Vol. 49 N° 21 Novembre 2010 |
Vol. 49 N° 22 Novembre 2010 |
Vol. 49 N° 23 Décembre 2010 |
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| Titre : | Industrial & engineering chemistry research, Vol. 49 N° 21 - Novembre 2010 |
| Type de document : | Bulletin : texte imprimé |
| Paru le : | 01/02/2011 |
| Année de publication : | 2011 |
| Format : | p. 10153-11120 / ill. / 28 cm |
| Note générale : | Chemical engineering |
| Langues : | Français |
| En ligne : | http://pubs.acs.org/toc/iecred/49/21 |
Dépouillements
Article : texte imprimé
James R. Katzer, Auteur
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The major theme of the 21st International Symposium on Chemical Reaction Engineering (ISCRE 21) is sustainable development. Many of the critical sustainable development challenges revolve around: energy, resources, food, water, and environment. [...]
Article : texte imprimé
Kai Sundmacher, Auteur
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Fuel cells are electrochemical membrane reactors that are able to convert chemically stored energy directly to electrical energy at high thermodynamic efficiencies. The present paper summarizes the current status and the future needs in fuel cel[...]
Article : texte imprimé
Matthew Neurock, Auteur
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Future strategies for sustainable energy production will undoubtedly require processes and materials that can efficiently convert renewable resources into fuels. Nature’s enzymes can exquisitely integrate highly active catalytic centers within f[...]
Article : texte imprimé
Liang-Shih Fan, Auteur ;
Fanxing Li, Auteur
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The concept of chemical looping reactions has been widely applied in chemical industries, for example, the production of hydrogen peroxide (H2O2) from hydrogen and oxygen using 9,10-anthraquinone as the looping intermediate. Fundamental research[...]
Article : texte imprimé
Brent H. Shanks, Auteur
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For biorenewable feedstocks to serve as a significant source of chemicals and/or fuels, the development of new chemical processes as well as biological processes will be required. However, the conversion of biorenewable feedstocks with heterogen[...]
Article : texte imprimé
Bala Subramaniam, Auteur
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The modern refinery relies primarily on feedstocks based on fossil fuels (such as petroleum, natural gas, and coal) to produce fuels and chemicals. Several megaton catalytic processes (such as homogeneous hydroformylation of higher olefins, epox[...]
Article : texte imprimé
Oliver Czuprat, Auteur ;
Thomas Schiestel, Auteur ;
Hartwig Voss, Auteur
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A membrane reactor that incorporated hollow fiber in combination with an established catalyst was used for the oxidative coupling of methane (OCM). A perovskite membrane of the composition BaCoxFeyZrzO3-delta (BCFZ, x + y + z = 1) allows a contr[...]
Article : texte imprimé
A. Jayakumar, Auteur ;
J. M. Vohs, Auteur ;
R. J. Gorte, Auteur
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Molten In, Pb, and Sb were examined as anodes in solid oxide fuel cells (SOFC) that operate between 973 and 1173 K. The results for these metals were compared with those reported previously for molten Sn electrodes. Cells were operated under “ba[...]
Article : texte imprimé
Sameer H. Israni, Auteur ;
Michael P. Harold, Auteur
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The objective of this study is to understand and quantify the effects of the reactant and product species of the methanol steam reforming reaction (CH3OH, H2O, CO2, CO) on the H2 flux through a Pd77Ag23 membrane. Various concentrations of said g[...]
Article : texte imprimé
Jing Xu, Auteur ;
Jinhua Yang, Auteur ;
Jim Yang Lee, Auteur
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First principle calculations were used to screen the activity of core-shell oxygen reduction reaction (ORR) electrocatalysts for use in direct methanol fuel cells (DMFCs). Density functional theory (DFT) calculations indicate that the subsurface[...]
Article : texte imprimé
Daejin Kim, Auteur ;
David Donohue, Auteur ;
Bhanu Kuncharam, Auteur
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Our research group has developed a cartridge-based, ceramic microchannel system capable of integrating multiple unique chemical processes within a single monolithic system, for rapid heat and mass transfer. In this manuscript, the authors report[...]
Article : texte imprimé
Antonio C. S. M. Carvalho, Auteur ;
Dennis L. Chicoma, Auteur ;
Reinaldo Giudici, Auteur
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This contribution describes the development of a continuous emulsion copolymerization processs for vinyl acetate and n-butyl acrylate in a tubular reactor. Special features of this reactor include the use of oscillatory (pulsed) flow and interna[...]
Article : texte imprimé
Susanne Lux, Auteur ;
Thomas Winkler, Auteur ;
Matthaus Siebenhofer, Auteur
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Formation of azeotropic mixtures may cause difficulties in separation. Synthesis and isolation of methyl acetate is a representative example for formation of azeotropic product mixtures. In this project chemical reaction engineering in batch and[...]
Article : texte imprimé
Vincenzo Palma, Auteur ;
Diana Sannino, Auteur ;
Vincenzo Vaiano, Auteur
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The behavior of a two-dimensional laboratory-scale fluidized-bed catalytic reactor for the photocatalytic oxidative dehydrogenation of cyclohexane to benzene has been studied, employing a molybdenum-based catalyst and a titania-alumina mixed oxi[...]
Article : texte imprimé
Ernesto Altman, Auteur ;
Georgios D. Stefanidis, Auteur ;
Thomas Van Gerven, Auteur
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An envisioned reactive distillation (RD) process for the esterification reaction of n-propyl propionate (ProPro) from I-propanol (ProOH) and propionic acid (ProAc) using microwave irradiation (MW) (f = 2.45 GHz) is studied. In this frame, the fu[...]
Article : texte imprimé
Xingfu Song, Auteur ;
Menghua Zhang, Auteur ;
Jin Wang, Auteur
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A computational fluid dynamics (CFD) model was developed for the simulation and optimization of an existing continuous DTB crystallizer with KCl productivity of 0.1 million tons per year. The multiple reference frame (MRF) method was used in the[...]
Article : texte imprimé
Willi Boll, Auteur ;
Steffen Tischer, Auteur ;
Olaf Deutschmann, Auteur
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Abatement of pollutant emissions over platinum-containing catalytic converters of lean operated engines is studied. Several close-to-production model catalysts with varying platinum loading and hydrothermal aging procedures are characterized by [...]
Article : texte imprimé
April Russell, Auteur ;
William S. Epling, Auteur ;
Howard Hess, Auteur
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Infrared thermography and spatially resolved capillary inlet mass spectrometry (SpaciMS) have been used to characterize propylene oxidation reactions occurring along a Pt/Al2O3 monolith-supported catalyst before and after heterogeneous thermal d[...]
Article : texte imprimé
Samir Bensaid, Auteur ;
Edoardo Merlone Borla, Auteur ;
Nunzio Russo, Auteur
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The present paper describes a novel, fully integrated after-treatment system based on the use of hydrogen for de-NOx purposes, designed for light-duty diesel engine applications. Hydrogen is generated by an autothermal reformer, placed as a bypa[...]
Article : texte imprimé
Ashok Kumar, Auteur ;
Michael P. Harold, Auteur ;
Vemuri Balakotaiah, Auteur
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A systematic study over Pt/BaO/Al2O3 powder catalyst is carried out using Temporal Analysis of Products (TAP) to estimate the effective diffusivity of stored NO, in the barium phase. The prenitration of PtBaO/ Al2O3 using sequential pulses of NO[...]
Article : texte imprimé
Motoaki Kawase, Auteur ;
Hiroyasu Fujitsuka, Auteur ;
Hitoshi Nakanishi, Auteur
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A reaction model, which is comprehensive and simple enough to be a base of the dynamic model, of the after-treatment of automobile exhaust gas was proposed. The studied catalyst was Pt- and Rh-supported alumina washcoated over a honeycomb. For a[...]
Article : texte imprimé
Frantisek Plat, Auteur ;
Sarka Bartova, Auteur ;
Jan Stepanek, Auteur
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A combined exhaust gas aftertreatment system, consisting of a diesel oxidation catalyst (DOC), an NOx storage and reduction catalyst (NSRC, which also is called lean NO, trap, LNT), and a catalyst for selective catalytic reduction of NO, by NH3 [...]
Article : texte imprimé
K. Chen, Auteur ;
K. S. Martirosyan, Auteur ;
D. Luss, Auteur
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A major technological challenge in the operation of diesel particulate filters (DPFs) is prevention of the occasional melting of the ceramic filters during regeneration (combustion of accumulated particulate matter). The cause of this melting is[...]
Article : texte imprimé
Donghai Mei, Auteur ;
Jincheng Du, Auteur ;
Matthew Neurock, Auteur
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This article discusses first-principles-based kinetic Monte Carlo simulation of Nitric Oxide reduction. The kinetics for NO reduction over supported platinum under lean condition were investigated by first-principles-based kinetic Monte Carlo si[...]
Article : texte imprimé
Pio Forzzatti, Auteur ;
Isabella Nova, Auteur ;
Enrico Tronconi, Auteur
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NH3-selective catalytic reduction (SCR) is applied worldwide to DeNOx of combustion exhausts of stationary and mobile sources, but a greater DeNOx activity at low temperatures is desired to meet forthcoming restrictive legislations and to increa[...]
Article : texte imprimé
Feng Qiyao, Auteur ;
Yang L. Wang, Auteur ;
Fokion N. Egolfopoulos, Auteur
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In this study, the oxidation characteristics of biodiesel fuels are investigated with the goal of contributing toward the fundamental understanding of their combustion characteristics and evaluating the effect of using these alternative fuels on[...]
Article : texte imprimé
Kevin M. Van Geem, Auteur ;
Steven P. Pyl, Auteur ;
Guy B. Marin, Auteur
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Oxygenated hydrocarbons, particularly alcohol compounds, are being studied extensively as alternatives and additives to conventional fuels due to their propensity of decreasing soot formation and improving the octane number of gasoline. However,[...]
Article : texte imprimé
Aijun Li, Auteur ;
Shouyang Zhang, Auteur ;
Boris Reznik, Auteur
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Chemical vapor infiltration and deposition of carbon fiber bundles are applied to synthesize pyrolytic carbon composites using the oxygen-containing precursor ethanol. The influence of the temperature (1373 and 1423 K) and pressure (1−7 Pa) on t[...]
Article : texte imprimé
Xiaolin Zheng, Auteur ;
Gabriel M. Veith, Auteur ;
Evgeniy Redekop, Auteur
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Temporal Analysis of Products (TAP) reactor system was used to investigate CO oxidation behavior on Au/SiO2 catalysts prepared via the physical vapor deposition method of magnetron sputtering. Au/SiO2 catalysts are a valuable model system for st[...]
Article : texte imprimé
Shin R. Mukai, Auteur ;
Yoshitaka Satoh, Auteur
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Temporal Analysis of Products (TAP) reactor system was used to investigate CO oxidation behavior on Au/SiO2 catalysts prepared via the physical vapor deposition method of magnetron sputtering. Au/SiO2 catalysts are a valuable model system for st[...]
Article : texte imprimé
Sreekumar R. Kuriyedath, Auteur ;
Borislava Kostova, Auteur ;
Ioannis G. Kevrekidis, Auteur
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A Lattice Monte Carlo (LMC) simulation technique has been developed to describe the synthesis of a single semiconductor nanocrystal inside the droplets of a microemulsion. The LMC simulation can track the diffusion of a precursor, its irreversib[...]
Article : texte imprimé
Say Yei Foo, Auteur ;
Chin Kui Cheng, Auteur ;
Tuan-Huy Nguyen, Auteur
|
CO2 reforming of CH4 in the presence of O2 in the feed has been investigated in a fixed bed reactor containing a Co-Ni catalyst. The reforming rate increased with O2 partial pressure before leveling out at O2:CH4 = 1I at temperature greater than[...]
Article : texte imprimé
Srinivas Rangarajan, Auteur ;
Aditya Bhan, Auteur ;
Prodromos Daoutidis, Auteur
|
Biomass conversion to fuels and chemicals involves a multitude of oxygen-containing compounds and thermochemical reaction routes. A detailed elucidation of the process chemistry is, thus, a key step in understanding the reaction mechanisms and d[...]
Article : texte imprimé
Kaiyuan He, Auteur ;
Ioannis P. Androulakis, Auteur ;
Marianthi G. Ierapetritou, Auteur
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An on-the-fly mechanism reduction approach for coupling complex chemistry and computational fluid dynamics (CFD) is proposed in this paper. The approach consists of element flux analysis and identification of active species and reactions based o[...]
Article : texte imprimé
T. Alexander Nijhuis, Auteur ;
Jiaqi Chen, Auteur ;
Stefanie M. A. Kriescher, Auteur
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The usage of a microreactor system for the direct epoxidation of propene over a gold-titania-based catalyst system using a mixture of hydrogen, oxygen, and propene allows for the safe operation of the reaction in the explosive regime. A kinetic [...]
Article : texte imprimé
Rhona Van Borm, Auteur ;
Marie-Françoise Reyniers, Auteur ;
Johan A. Marten, Auteur
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Catalytic cracking of methylcyclohexane has been studied on eight commercially available zeolites, five FAUs and three MFIs, and on two newly developed zeotype materials with bimodal porous structure, BIPOMs. Both BIPOMs are composed of an MFI u[...]
Article : texte imprimé
Sivakumar Pitchaiah, Auteur ;
Antonios Armaou, Auteur
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We address the problem of tracking and stabilization of dissipative distributed parameter systems, by designing static output feedback controllers using adaptive proper orthogonal decomposition methodology (APOD). Initially, an ensemble of eigen[...]
Article : texte imprimé
Xinyu Zhang, Auteur ;
Gangshi Hu, Auteur ;
Gerassimos Orkoulas, Auteur
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This work focuses on the development of a multivariable model predictive controller that simultaneously regulates thin film surface roughness and mean slope to optimize light reflectance and transmittance during thin film manufacturing by manipu[...]
Article : texte imprimé
Anwesha Chaudhury, Auteur ;
Chakraborty Saikat, Auteur
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In this paper, we study the dynamic evolution of mixing-limited patterns in homogeneous autocatalytic reactors. Using a regularized low-dimensional model derived through the spatial averaging of the 3-D convection-diffusion-reaction equation usi[...]
Article : texte imprimé
Jesus Moreira, Auteur ;
Benito Serrano, Auteur ;
Aaron Ortiz, Auteur
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The radiation field in an annular photocatalytic reactor is simulated using a Monte Carlo method (MC) for two TiO2 suspensions in water. Simulations are performed by using both the spectral distribution and the wavelength-averaged scattering and[...]
Article : texte imprimé
Andreas Peschel, Auteur ;
Hannsjorg Freund, Auteur ;
Kai Sundmacher, Auteur
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In this contribution, a methodology for the optimal design of chemical reactors based on the best reaction route in the thermodynamic state space is proposed. This route is obtained by tracking a fluid element on its way through the reactor and [...]
Article : texte imprimé
David Ming, Auteur ;
Diane Hildebrandt, Auteur ;
David Glasser, Auteur
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An improved method of candidate attainable region (AR) construction, based on an existing bounding hyperplanes approach, is presented. The method uses a plane rotation about existing extreme points, rather than a plane translation, to eliminate [...]
Article : texte imprimé
Olga Nekhamkina, Auteur ;
Moshe Sheintuch, Auteur
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We have recently showed the formation of transversal patterns in a 3D cylindrical reactor in which an exothermic first-order reaction of Arrhenius kinetics occurs with variable catalytic activity. Under these oscillatory kinetics, the system exh[...]
Article : texte imprimé
Koyo Norinaga, Auteur ;
Hiroshi Yatabe, Auteur ;
Masahiro Matsuoka, Auteur
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For more efficient utilization of coke oven gas (COG), a byproduct from the production of metallurgical cokes, a reforming technology of hot COG (HCOG) was developed to obtain material gases suitable for methanol production. A test plant was ins[...]
Article : texte imprimé
R. C. Ramaswamy, Auteur ;
Mills Bailey, Auteur ;
Scott Barnicki, Auteur
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Hydrolysis of isobutyric anhydride suffers from the mass transfer issues associated with the inherent partial miscibility of the participating reactants in a certain concentration—temperature space. Hence, activity-based models are developed and[...]
Article : texte imprimé
Sardella Palmar, Auteur ;
J. M. Schweitzer, Auteur ;
H. Wu, Auteur
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Thermal stability analysis is imperative to ensure the safe operation of chemical reactors carrying out highly exothermic reactions. We present a thermal stability study for a fixed bed gas oil hydrotreating reactor working at industrial operati[...]
Article : texte imprimé
Sofiane Benyahia, Auteur ;
Janine E. Galvin, Auteur
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Discrete particle methods that track the motion of individual particles and their collisions are computationally very expensive. To accelerate these numerical simulations, some basic assumptions have been introduced and reported in the literatur[...]
Article : texte imprimé
Richa Raj, Auteur ;
Nikita Mathur, Auteur ;
Vivek V. Buwa, Auteur
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Liquid-liquid flows in microchannels are important to microreactors/microfluidic devices that are used to carry out liquid-liquid reactions, extractions, emulsifications, etc. In this work, we report numerical investigations of drop/slug formati[...]
Article : texte imprimé
Swapna S. Rabha, Auteur ;
Vivek V. Buwa, Auteur
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The predictive capabilities of continuum CFD models to simulate large-scale dispersed gas—liquid flows depend on the closures used to estimate the interphase coupling forces. The present manuscript shows that different corrections that are appli[...]
Article : texte imprimé
Pierdomenico Biasi, Auteur ;
Federica Menegazzo, Auteur ;
Francesco Pinna, Auteur
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H2O2 direct synthesis over a palladium catalyst based on sulfated ceria (Pd-CeS) has been studied in a trickle-bed reactor at ― 10 °C. The combined effect of liquid and gas flow rates was studied by independent variations. The maximum productivi[...]
Article : texte imprimé
J. J. Derksen, Auteur ;
Dmitry Eskin, Auteur
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Direct simulations of laminar solid−liquid flow in microchannels with full resolution of the solid−liquid interfaces have been performed. The solids phase consists of simple agglomerates, assembled of monosized, spherical particles. The flow of [...]
Article : texte imprimé
Mohsen Behnam, Auteur ;
Anthony G. Dixon, Auteur ;
Michiel Nijemeisland, Auteur
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Catalyst deactivation by carbon deposition has been investigated for the dehydrogenation of propane to propene on a Cr2O3/Al2O3 catalyst. Computational fluid dynamics was used to couple the 3D transport and reaction processes occurring inside th[...]
Article : texte imprimé
Janine Chungyin Cheng, Auteur ;
Rodney O. Fox, Auteur
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A model study has been conducted for Flash Nanoprecipitation (FNP)—a novel approach to produce functional nanoparticles. A population balance equation with the FNP kinetics has been integrated into a computational fluid dynamics (CFD) simulation[...]
Article : texte imprimé
Multiscale modeling of TiO2 nanoparticle production in flame reactors : Effect of chemical mechanism
Maulik Mehta, Auteur ;
Yonduck Sung, Auteur ;
Venkatramanan Raman, Auteur
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For titanium dioxide (TiO2) nanoparticles manufactured in flame reactors, the precursor is injected into a pre-existing flame, exposing it to a high-temperature gas phase, leading to nucleation and particle growth. Predictive modeling of this ch[...]
Article : texte imprimé
Daniel A. Hickman, Auteur ;
Mark E. Jones, Auteur ;
Zoran R. Jovanovic, Auteur
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Novel LaOCl/LaCl3 catalysts have been discovered that enable the production of vinyl chloride monomer from ethane. An ethane-based process would result in both capital savings and raw materials savings when compared to the current most effective[...]
Article : texte imprimé
Xiaowei Zhu, Auteur ;
Xiaojun Lu, Auteur ;
Xinying Liu, Auteur
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A series of experiments were performed to investigate and compare the heat transfer characteristics of a catalyst bed during the Fischer-Tropsch synthesis (FTS) reaction and heating without the reaction. A Co/ TiO2 catalyst was used in a relativ[...]
Article : texte imprimé
Nasim Hooshyar, Auteur ;
Peter J. Hamersma, Auteur ;
Robert F. Mudde, Auteur
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With the aim of structuring the flow and reducing backmixing in slurry bubble columns, we investigate the effect of needle spargers in three-phase systems. We apply optical probes in a 2D and 3D column to measure the bubble dynamics and gas frac[...]
Article : texte imprimé
Amit Sharma, Auteur ;
Carine Julcour Lebigue, Auteur ;
Raj M. Deshpande, Auteur
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A chemical reaction engineering approach is reported to investigate the biphasic hydroformylation of 1-octene using [bmim][PF6] ionic liquid. It is based both on a process parameter investigation (temperature, concentrations, and pressures) and [...]
Article : texte imprimé
Catherine Ayral, Auteur ;
Carine Julcour Lebigue, Auteur ;
Frank Stuber, Auteur
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Catalytic wet air oxidation (CWAO) of phenolic compounds over three activated carbons (ACs) has been investigated in a semibatch autoclave to better understand the influence of AC properties on the efficiency and stability of CWAO. Phenol, 4-nit[...]
Article : texte imprimé
Stefan Radl, Auteur ;
Daniele Suzzi, Auteur ;
Johannes G. Khinast, Auteur
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In our work, we focus on the Euler-Lagrange strategy to simulate bubbly flows and fast chemical reactions. We propose a film model to account for fast, multistep chemical reactions near the gas—liquid interface. A combination of such a film mode[...]
Article : texte imprimé
Rodrigo J. G. Lopes, Auteur ;
Rosa M. Quinta-Ferreira, Auteur
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This work is devoted to the computational fluid dynamics (CFD) simulation of trickle-bed reactors (TBRs) with environmentally based applications on advanced wastewater remediation technologies. Recently, TBRs have assumed a major role in industr[...]
Article : texte imprimé
Sean G. Mueller, Auteur ;
Milorad P. Dudukovic, Auteur
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A single-point optical probe is developed that can accurately obtain local gas holdup in a gas-liquid stirred tank across a wide range of operating pressures, temperatures, and fluids. It is found that the probe orientation to the flow in a stir[...]
Article : texte imprimé
Meeuwse, Marco, Auteur ;
Sanne Lempers, Auteur ;
John Van Der Schaaf, Auteur
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The heterogeneously catalyzed oxidation of glucose is performed in a rotor-stator spinning disk reactor. One side of the rotor is coated with a Pt/C and Nafion catalytic layer, resulting in a liquid-solid interfacial area of 274 mi2 mR3. At the [...]
Article : texte imprimé
R. Tschentscher, Auteur ;
R.J.P. Spijkers, Auteur ;
T.A. Nijhuis, Auteur
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The liquid−solid mass transfer rate is studied for two three-phase reactor configurations, a stirred reactor and a rotating solid foam reactor, using the dissolution of copper by potassium dichromate as a model reaction. For the stirred reactor [...]
Article : texte imprimé
Tingwen Li, Auteur ;
Aytekin Gel, Auteur ;
Madhava Syamlal, Auteur
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This study demonstrates an approach to effectively combine high- and low-resolution simulations for design studies of industrial coal gasifier. The flow-field data from a 10 million cell full-scale simulation of a commercial-scale gasifier were [...]
Article : texte imprimé
Toward a truly multiscale computational strategy for simulating turbulent two - phase flow processes
E.A. Harry, Auteur ;
Akker Van Der, Auteur
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In chemical reactor engineering, simple concepts are used for describing the flow in a reactor. Turbulent two-phase flow processes, however, are characterized by a broad range of time and length scales. Two-phase reactors operated in the turbule[...]
Article : texte imprimé
The multiphase transport phenomena frequently take place in metallurgical processes, for example, in the electrolysis process of magnesium, where there exists three-phase flow including liquid magnesium, molten electrolyte, and chlorine gas unde[...]
Article : texte imprimé
Cheng Chin Kui, Auteur ;
Say Yei Foo, Auteur ;
Adesoji A. Adesina, Auteur
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Glycerol steam reforming has been performed in a fixed-bed microreactor containing bimetallic Co−Ni/Al2O3 catalyst using a wide range of steam-to-glycerol ratios (3 ≤ STGR ≤ 12) for reaction temperatures between 773 and 823 K at atmospheric pres[...]
Article : texte imprimé
Saikat Chakraborty, Auteur ;
Ashwin Gaikwad, Auteur
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Conversion of cellulose to glucose is the rate-limiting step in converting biomass into fuel. In this paper, we explore the effects of micro- and macro-mixing on the enzymatic hydrolysis of various cellulosic substrates to glucose by using a spa[...]
Article : texte imprimé
Arely Torres, Auteur ;
Debdut Roy, Auteur ;
Bala Subramaniam, Auteur
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The kinetics of the aqueous-phase hydrogenolysis of glycerol to 1,2-propanediol (1,2-PDO) was studied using a bimetallic Ru―Re/C catalyst in a slurry reactor in a temperature range of 493-513 K and a hydrogen pressure of 2.4-9.6 MPa. Glycerol hy[...]
Article : texte imprimé
Ana G. Gayubo, Auteur ;
Ainhoa Alonso, Auteur ;
Beatriz Valle, Auteur
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A kinetic model for the transformation of bioethanol (aqueous ethanol into hydrocarbons) has been established for a catalyst with slow deactivation by coke (prepared from a HZSM-5 zeolite treated with alkali in order to moderate its acid strengt[...]
Article : texte imprimé
Su Shiung Lam, Auteur ;
Alan D. Russell, Auteur ;
Howard A. Chase, Auteur
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We demonstrate the applicability of pyrolysis using microwave heating to recycle used car engine oil. Waste oil was thermally cracked in an inert microwave-heated bed of particulate carbon from which oxygen was excluded, and the relationship bet[...]
Article : texte imprimé
Jackson W. Ford, Auteur ;
Raghunath V. Chaudhari, Auteur ;
Bala Subramaniam, Auteur
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A novel process for the fixed-bed deoxygenation of a model bio-oil compound in supercritical media at mild pressures (tens of bars) is presented. As an example, nonanal deoxygenation over Pt/Al2O3 catalyst in supercritical n-hexane (Tc = 234.45 [...]
Article : texte imprimé
Peter Heidebrecht, Auteur ;
Benny Hartono, Auteur ;
Christoph Hertel, Auteur
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This contribution focuses on the model-based system design and the systemwide evaluation of novel reactor concepts for power plants which combine gasification of wood and conversion of its gaseous product in fuel cells. System design was carried[...]
Article : texte imprimé
Wenbin Hu, Auteur ;
Daniel Knight, Auteur ;
Brian Lowry, Auteur
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Glycerol selective oxidation to dihydroxyacetone was investigated systematically in a semibatch reactor over Pt−Bi/C catalyst. Catalysts with different metal loadings, supports, and preparation methods were synthesized, characterized, and tested[...]
Article : texte imprimé
Soumitra R. Deshmukh, Auteur ;
Anna Lee Y. Tonkovich, Auteur ;
Kai T. Jarosch, Auteur
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The scale-up of a microchannel reactor for Fischer−Tropsch (FT) synthesis has been demonstrated at multiple scales using four reactors with different lengths and number of channels. An FT catalyst provided by Oxford Catalysts, Ltd. was tested in[...]
Article : texte imprimé
Kristin Hecht, Auteur ;
Manfred Kraut, Auteur
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A new microstructured thin film reactor that allows for thermographic imaging of the reaction through the thin metal foil along which the liquid flows has been studied with the exothermic absorption of CO2 into aqueous solutions of NaOH. The use[...]
Article : texte imprimé
Jose R. Hernandez Carucci, Auteur ;
Ville Halonen, Auteur ;
Kari Eranen, Auteur
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Silver/α-alumina catalysts were wash-coated in stainless steel microchannels. The microchannels were used for the epoxidation of ethylene. Pure silver microplates were also investigated giving the highest activities and selectivities toward the [...]
Article : texte imprimé
Matthias Mendorf, Auteur ;
Henrik Nachtrodt, Auteur ;
Axel Mescher, Auteur
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The results of experimental studies on the parallelization of both single-phase and biphasic liquid-liquid slug flow in capillary microreactors are presented. Various flow distributor designs were investigated with respect to the uniformity of l[...]
Article : texte imprimé
Martin O’Connell, Auteur ;
Gunther Kolb, Auteur ;
Karl-Peter Schelhaas, Auteur
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A 5 kWel water gas shift reactor was integrated with a 5 kWel preferential oxidation reactor for the purposes of reducing the carbon monoxide levels in a reformate exit stream to levels below 100 ppm. The integrated system worked best at partial[...]
Article : texte imprimé
S. Vaccaro, Auteur ;
L. Malangone, Auteur ;
P. Ciambelli, Auteur
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This paper presents both experimental and modeling investigations of a catalytic wall fuel processor consisting of coupled methane reforming and methane combustion sections. The reacting systems are both catalytic and the latter generates the he[...]
Article : texte imprimé
Xuyen K. Phan, Auteur ;
Hamidreza D. Bakhtiary, Auteur ;
Rune Myrstad, Auteur
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A stacked foil microreactor (SFMR) was developed and used to study methanol synthesis under high pressure. Two catalyst foil coatings were applied: Pd/CeO2 by sol―gel coating and impregnation and CuO/ZnO/Al2O3 by coprecipitation and slurry coati[...]
Article : texte imprimé
Matthew S. Mettler, Auteur ;
Georgios D. Stefanidis, Auteur ;
Dionisios G. Vlachos, Auteur
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Computational fluid dynamics (CFD) simulations are used to simulate stacks of different sizes, to understand nonlinear effects that arise in scaleout of microchemical systems. As an example process, syngas production from methane is studied usin[...]
Article : texte imprimé
Angela M. Moreno, Auteur ;
Shalini Damodharan, Auteur ;
Benjamin Wilhite, Auteur
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In this work, the authors design, fabricate, and evaluate three prototype ceramic microchannel reactor architectures with two-dimensional complex flow configurations for coupling methanol steam reforming with methanol combustion/partial oxidatio[...]
Article : texte imprimé
Gloria A. E. Oxford, Auteur ;
Randall Q. Snurr, Auteur ;
Linda J. Broadbelt, Auteur
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Hybrid quantum mechanics/molecular mechanics (QM/MM) methods were employed to study electronic effects of 5,5′-substituents on the enantioselectivity of (salen)Mn catalysts. These methods were shown to effectively capture electronic effects of s[...]
Article : texte imprimé
In-Gu Lee, Auteur ;
Son-Ki Ihm, Auteur
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The organic wastewater obtained from an amino acid production process was treated by supercritical water gasification (SCWG) method for achieving water purification and hydrogen production. A set of SCWG experiments was also carried out with glu[...]
Article : texte imprimé
U. Wetwatana, Auteur ;
P. Kim-Lohsoontorn, Auteur ;
S. Assabumrungrat, Auteur
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The steam reforming of used lubricating oil (ULO) over Ni- and Rh-based catalysts supported by Ce-ZrO2 and Al2O3 is studied in the present work. Among all catalysts, Rh/Ce-ZrO2 (5 wt % Rh) provides relatively higher reforming reactivity (in term[...]
Article : texte imprimé
Mitra Abdollahi, Auteur ;
Jiang Yu, Auteur ;
Hyun Tae Hwang, Auteur
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Biomass is a renewable and worldwide-abundant energy resource that shows great potential for environmentally benign power generation by minimizing greenhouse gas emissions. A “one-box” process has been proposed and studied in order to economical[...]
Article : texte imprimé
Hyun Tae Hwang, Auteur ;
Ahmad Al-Kukhun, Auteur ;
Varma, Arvid, Auteur
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Among chemical hydrides, ammonia borane (AB) is of interest as a hydrogen storage material due to its high hydrogen capacity (19.6 wt %). In this paper, our recently developed hydrothermolysis process was investigated over a wide range of AB wei[...]
Article : texte imprimé
A. Kumar, Auteur ;
A. S. Mukasyan, Auteur ;
E. E. Wolf, Auteur
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A novel method for catalyst preparation using combustion synthesis techniques has been used to prepare Cu/Zn/Zr and Pd-based catalysts for oxidative reforming of methanol. Spatially resolved infrared thermography has been used to follow the temp[...]
Article : texte imprimé
Mohammad M. Hossain, Auteur ;
Mohammad R. Quddus, Auteur ;
Hugo I. Lasa, Auteur
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La modified Ni/La-γAl2O3 oxygen carrier reduction kinetics is investigated using temperature programmed reduction (TPR) and a parameter nonlinear regression analysis. TPR profile study and XRD analysis of the completely oxidized samples show tha[...]
Article : texte imprimé
Fanxing Li, Auteur ;
Liang Zeng, Auteur ;
Liang-Shih Fan, Auteur
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The techno-economic performances of various coal-based hydrogen and electricity cogeneration processes are examined under a carbon-constrained scenario. The baseline coal gasification process and the novel membrane and syngas chemical-looping pr[...]
Article : texte imprimé
Fabrizio Scala, Auteur ;
Riccardo Chirone, Auteur
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The fluidized bed combustion of single coal char particles was investigated at high CO2 concentrations, typical of oxyfiring conditions, at different bed temperatures and oxygen concentrations. The conversion rate of the char particles was follo[...]
Article : texte imprimé
Rahul D. Solunke, Auteur ;
Gotz Veser, Auteur
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Chemical-looping steam reforming (CLSR) is a chemical-looping combustion (CLC) derived technology in which air is replaced by steam as oxidant. CLSR combines the inherent CO2 capture of CLC with the production of PEMFC-ready hydrogen streams wit[...]
Article : texte imprimé
Jonathan Albo, Auteur ;
Patricia Luis, Auteur ;
Angel Irabien, Auteur
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Carbon dioxide (CO2) emissions have to be controlled and reduced in order to avoid environmental risks. Membrane processes in combination with the use of ionic liquids are recently under research and development in order to demonstrate a zero so[...]
Article : texte imprimé
Jay Benziger, Auteur ;
James Nehlsen, Auteur
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Decene and acetone were hydrogenated over Ni, Pd, Pt, Cu, Ag, and Au catalysts in a polymer electrolyte hydrogen pump (PEHP) reactor. Water was oxidized over a Pt mesh anode and protons were pumped to the catalysts supported on porous carbon cat[...]
Article : texte imprimé
Yali Yao, Auteur ;
Diane Hildebrandt, Auteur ;
David Glasser, Auteur
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The effect of CO2 on Fischer−Tropsch synthesis (FTS) on a cobalt based catalyst had been investigated in a fixed-bed microreactor. Two feed gases, H2:CO:CO2 = 2:1:0 and H2:CO:CO2 = 3:0:1, were mixed in various proportions thus varying the ratio [...]
Article : texte imprimé
Prakash D. Vaidya, Auteur ;
Prashanti Konduru, Auteur ;
Mukanth Vaidyanathan, Auteur
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Aqueous solutions containing alkaline salts of carboxylic or sulfonic amino acids represent candidate solvents with good potential for carbon dioxide (CO2) capture. In the present work, the CO2 reactions with potassium salts of glycine (aminoace[...]
Article : texte imprimé
Liisa K. Rihko-Struckmann, Auteur ;
Andreas Peschel, Auteur ;
Richard Hanke-Rauschenbach, Auteur
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The thermodynamic and operational boundaries to store electrical energy chemically are evaluated in this contribution. Methanol is considered as a candidate for chemical energy storage. The production of methanol from exhaust CO2 could be one wa[...]
Article : texte imprimé
Shueh-Hen Cheng, Auteur ;
Hsuan Chang, Auteur ;
Yih-Hang Chen, Auteur
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For an industrial secondary methane steam reformer with regular packing, catalyst design is accomplished by an integrated optimization approach, which includes the design of experiment, computational fluid dynamics (CFD) simulation, a response s[...]
Article : texte imprimé
Sanjeev M. Rao, Auteur ;
Marc-Olivier Coppens, Auteur
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The broad pore network of a hierarchically structured hydrodemetalation catalyst, containing both nano- and macropores, is mathematically optimized to maximize the conversion of nickel metalloporphyrins in crude oil residue. A random spheres mod[...]
Article : texte imprimé
Mark Saeys, Auteur ;
Kong Fei Tan, Auteur ;
Jie Chang, Auteur
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Supported Co catalysts exhibit favorable activity and selectivity for Fischer―Tropsch synthesis (FTS) but deactivate slowly. To explore deactivation by carbon deposition, the stability of various forms of deposited carbon was evaluated using den[...]
Article : texte imprimé
Stefania Specchia, Auteur ;
Fabio Conti, Auteur ;
Vito Specchia, Auteur
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In recent years, catalytic combustion of CH4 has been extensively studied as an alternative option to conventional thermal combustion for the production of heat and energy in view of its capability to achieve effective combustion at much lower t[...]
Article : texte imprimé
Zhiming Zhou, Auteur ;
Tianying Zeng, Auteur ;
Zhenmin Cheng, Auteur
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Novel palladium catalysts supported on alumina supports with the hierarchically macro-/mesoporous structure were prepared and applied to selective hydrogenation of pyrolysis gasoline. The textural, structural, and morphological properties of the[...]
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