Documents disponibles écrits par cet auteur

Carbon nanotubes coated on silica gels as a support of Cu – Co catalyst for the synthesis of higher alcohols from syngas / Wei Feng in Industrial & engineering chemistry research, Vol. 50 N° 19 (Octobre 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 19 (Octobre 2011) . - pp. 11067–11072 Titre : Carbon nanotubes coated on silica gels as a support of Cu – Co catalyst for the synthesis of higher alcohols from syngas Type de document : texte imprimé Auteurs : Wei Feng, Auteur ; Qingwei Wang, Auteur ; Biao Jiang, Auteur Année de publication : 2011 Article en page(s) : pp. 11067–11072 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Carbon  nanotubes  Catalyst Résumé : This work demonstrates a new approach to preparing Cu–Co-based catalysts for higher alcohols synthesis from syngas. Oxidized multiwalled carbon nanotubes (MWNTs) were adsorbed onto silica gels, and MWNT- silica gels were used as the support of a Cu–Co-based catalyst. Pyrogallol was used in preparing the catalyst. It has been found that the carbon nanotubes in the support favor the distribution and interaction of Cu and Co species; using pyrogallol in preparing the catalyst improves the distribution of Cu and Co species and promotes the interaction between the species. As a result, the catalyst can decrease the methanol selectivity from 43.0% to 26.8% and increase the ethanol selectivity from 33.1% to 43.5%, in comparison to the catalyst with silica gels as the support. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie2014907 [article] Carbon nanotubes coated on silica gels as a support of Cu – Co catalyst for the synthesis of higher alcohols from syngas [texte imprimé] / Wei Feng, Auteur ; Qingwei Wang, Auteur ; Biao Jiang, Auteur . - 2011 . - pp. 11067–11072. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 19 (Octobre 2011) . - pp. 11067–11072 Mots-clés : Carbon  nanotubes  Catalyst Résumé : This work demonstrates a new approach to preparing Cu–Co-based catalysts for higher alcohols synthesis from syngas. Oxidized multiwalled carbon nanotubes (MWNTs) were adsorbed onto silica gels, and MWNT- silica gels were used as the support of a Cu–Co-based catalyst. Pyrogallol was used in preparing the catalyst. It has been found that the carbon nanotubes in the support favor the distribution and interaction of Cu and Co species; using pyrogallol in preparing the catalyst improves the distribution of Cu and Co species and promotes the interaction between the species. As a result, the catalyst can decrease the methanol selectivity from 43.0% to 26.8% and increase the ethanol selectivity from 33.1% to 43.5%, in comparison to the catalyst with silica gels as the support. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie2014907

Comprehensive simulation of an intensified process for H2 production from steam gasification of biomass / Peijun Ji in Industrial & engineering chemistry research, Vol. 48 N° 8 (Avril 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 8 (Avril 2009) . - pp. 3909–3920 Titre : Comprehensive simulation of an intensified process for H2 production from steam gasification of biomass Type de document : texte imprimé Auteurs : Peijun Ji, Auteur ; Wei Feng, Auteur ; Biaohua Chen, Auteur Année de publication : 2009 Article en page(s) : pp. 3909–3920 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Biomass  gasification  Hydrogen  Bubbling  fluidized  bed  gasifier  Steam  reformer  H2-membrane  water-gas-shift  reactor Résumé : For producing pure hydrogen from biomass gasification with steam as the gasifying agent, an intensified process is proposed. In the process, a bubbling fluidized bed gasifier is used for the steam gasification of biomass, a steam reformer is used for upgrading the biosyngas, and an H2-membrane water-gas-shift (HMWGS) reactor is used for converting the carbon monoxide and separating the hydrogen. Pure hydrogen is the product of the process. High-purity CO2 can be produced and taken as a coproduct. To better simulate the proposed process, models for the steam-blown fluidized bed gasifier and catalytic steam reformer have been developed. The simulation results have been compared with the experimental data, and good agreement has been obtained. The analysis of the proposed process is carried out in terms of the amount of pure hydrogen per kilogram of biomass and the overall thermodynamic efficiency of the process. Factors affecting the pure hydrogen production and thermodynamic efficiency have been studied and discussed. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801191g [article] Comprehensive simulation of an intensified process for H2 production from steam gasification of biomass [texte imprimé] / Peijun Ji, Auteur ; Wei Feng, Auteur ; Biaohua Chen, Auteur . - 2009 . - pp. 3909–3920. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 8 (Avril 2009) . - pp. 3909–3920 Mots-clés : Biomass  gasification  Hydrogen  Bubbling  fluidized  bed  gasifier  Steam  reformer  H2-membrane  water-gas-shift  reactor Résumé : For producing pure hydrogen from biomass gasification with steam as the gasifying agent, an intensified process is proposed. In the process, a bubbling fluidized bed gasifier is used for the steam gasification of biomass, a steam reformer is used for upgrading the biosyngas, and an H2-membrane water-gas-shift (HMWGS) reactor is used for converting the carbon monoxide and separating the hydrogen. Pure hydrogen is the product of the process. High-purity CO2 can be produced and taken as a coproduct. To better simulate the proposed process, models for the steam-blown fluidized bed gasifier and catalytic steam reformer have been developed. The simulation results have been compared with the experimental data, and good agreement has been obtained. The analysis of the proposed process is carried out in terms of the amount of pure hydrogen per kilogram of biomass and the overall thermodynamic efficiency of the process. Factors affecting the pure hydrogen production and thermodynamic efficiency have been studied and discussed. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801191g

Novel simulated moving - bed cascades with a total of five zones for ternary separations / Wei Feng in Industrial & engineering chemistry research, Vol. 51 N° 16 (Avril 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 16 (Avril 2012) . - pp. 5805–5812 Titre : Novel simulated moving - bed cascades with a total of five zones for ternary separations Type de document : texte imprimé Auteurs : Wei Feng, Auteur ; Bo Shen, Auteur ; Mingjie Chen, Auteur Année de publication : 2012 Article en page(s) : pp. 5805–5812 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Separation  ternary  mixture Résumé : Two simulated moving-bed (SMB) cascades are proposed for the separation of a ternary mixture containing the least, medium-, and most retained solutes (A, B, and C). Each cascade has a total of five zones. The first cascade combines two three-zone SMBs sharing zone III: the one SMB with zones I to III separates (A+B+C) into A and (B+C), and the other three-zone SMB with zones III to V separates (B+C) into B and C. The second cascade combines a four-zone SMB consisting of zones I to IV and a three-zone SMB comprising zones IV, V and I: the former separates (A+B+C) into (A+B) and C, and the latter separates (A+B) into A and B. Analysis of the concentration band movement together with a modeling study confirms the feasibilities of the two cascades, suggesting that the first cascade should be adopted if the separation of (A+B) and C is easier than that of A and (B+C), and otherwise, the second cascade should be used. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie2024189 [article] Novel simulated moving - bed cascades with a total of five zones for ternary separations [texte imprimé] / Wei Feng, Auteur ; Bo Shen, Auteur ; Mingjie Chen, Auteur . - 2012 . - pp. 5805–5812. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 16 (Avril 2012) . - pp. 5805–5812 Mots-clés : Separation  ternary  mixture Résumé : Two simulated moving-bed (SMB) cascades are proposed for the separation of a ternary mixture containing the least, medium-, and most retained solutes (A, B, and C). Each cascade has a total of five zones. The first cascade combines two three-zone SMBs sharing zone III: the one SMB with zones I to III separates (A+B+C) into A and (B+C), and the other three-zone SMB with zones III to V separates (B+C) into B and C. The second cascade combines a four-zone SMB consisting of zones I to IV and a three-zone SMB comprising zones IV, V and I: the former separates (A+B+C) into (A+B) and C, and the latter separates (A+B) into A and B. Analysis of the concentration band movement together with a modeling study confirms the feasibilities of the two cascades, suggesting that the first cascade should be adopted if the separation of (A+B) and C is easier than that of A and (B+C), and otherwise, the second cascade should be used. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie2024189

Protein adsorption on functionalized carbon nanotubes with a lactobionic amide amphiphile / Wei Feng in Industrial & engineering chemistry research, Vol. 50 N° 20 (Octobre 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 20 (Octobre 2011) . - pp. 11608-11613 Titre : Protein adsorption on functionalized carbon nanotubes with a lactobionic amide amphiphile Type de document : texte imprimé Auteurs : Wei Feng, Auteur ; Jing Xiao, Auteur ; Lili Li, Auteur Année de publication : 2011 Article en page(s) : pp. 11608-11613 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Adsorption Résumé : A lactobionic amide amphiphile was synthesized and used to functionalize multiwalled carbon nanotubes (MWNTs). The self-assembly of the amphiphile on the MWNTs was carried out in alcohol/water solutions. The functionalization of the MWNTs was investigated by means of ultraviolet, Raman, and X-ray photoelectron spectroscopies; X-ray diffraction; and high-resolution transmission electron microscopy. It was found that alcohols can promote the self-assembly of the amphiphile on MWNTs and regulate the amount of amphiphile assembled. Lysozyme was adsorbed onto functionalized MWNTs. Circular dichroism (CD) spectra revealed that the conformation of lysozyme underwent no significant alteration upon adsorption. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24612385 [article] Protein adsorption on functionalized carbon nanotubes with a lactobionic amide amphiphile [texte imprimé] / Wei Feng, Auteur ; Jing Xiao, Auteur ; Lili Li, Auteur . - 2011 . - pp. 11608-11613. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 20 (Octobre 2011) . - pp. 11608-11613 Mots-clés : Adsorption Résumé : A lactobionic amide amphiphile was synthesized and used to functionalize multiwalled carbon nanotubes (MWNTs). The self-assembly of the amphiphile on the MWNTs was carried out in alcohol/water solutions. The functionalization of the MWNTs was investigated by means of ultraviolet, Raman, and X-ray photoelectron spectroscopies; X-ray diffraction; and high-resolution transmission electron microscopy. It was found that alcohols can promote the self-assembly of the amphiphile on MWNTs and regulate the amount of amphiphile assembled. Lysozyme was adsorbed onto functionalized MWNTs. Circular dichroism (CD) spectra revealed that the conformation of lysozyme underwent no significant alteration upon adsorption. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24612385