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Cigarette butts and their application in corrosion inhibition for N80 steel at 90 °C in a hydrochloric acid solution / Jun Zhao in Industrial & engineering chemistry research, Vol. 49 N° 8 (Avril 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 8 (Avril 2010) . - pp. 3986–3991 Titre : Cigarette butts and their application in corrosion inhibition for N80 steel at 90 °C in a hydrochloric acid solution Type de document : texte imprimé Auteurs : Jun Zhao, Auteur ; Ningsheng Zhang, Auteur ; Chengtun Qu, Auteur Année de publication : 2010 Article en page(s) : pp. 3986–3991 Note générale : Industrial Chemistry Langues : Anglais (eng) Mots-clés : Cigarette  Corrosion  Inhibition  Steel  Hydrochloric  Acid Résumé : Cigarette butts, one of the most ubiquitous forms of garbage in the world, need to be recycled because their toxicity can kill saltwater and freshwater fish. In this study, the cigarette butts are applied as corrosion inhibitors for N80 steel at 90 °C in hydrochloric acid. Weight loss and electrochemical techniques are used to evaluate the corrosion inhibitive effect of cigarette butt water extracts. Results show that the inhibition efficiencies arrive at 94.6% and 91.7% in 10% and 15% (wt %) HCl solution, respectively, by adding 5% (wt %) inhibitor. In 20% HCl solution, they show a maximum inhibition efficiency of 88.4% by adding 10% inhibitor. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100168s [article] Cigarette butts and their application in corrosion inhibition for N80 steel at 90 °C in a hydrochloric acid solution [texte imprimé] / Jun Zhao, Auteur ; Ningsheng Zhang, Auteur ; Chengtun Qu, Auteur . - 2010 . - pp. 3986–3991. Industrial Chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 8 (Avril 2010) . - pp. 3986–3991 Mots-clés : Cigarette  Corrosion  Inhibition  Steel  Hydrochloric  Acid Résumé : Cigarette butts, one of the most ubiquitous forms of garbage in the world, need to be recycled because their toxicity can kill saltwater and freshwater fish. In this study, the cigarette butts are applied as corrosion inhibitors for N80 steel at 90 °C in hydrochloric acid. Weight loss and electrochemical techniques are used to evaluate the corrosion inhibitive effect of cigarette butt water extracts. Results show that the inhibition efficiencies arrive at 94.6% and 91.7% in 10% and 15% (wt %) HCl solution, respectively, by adding 5% (wt %) inhibitor. In 20% HCl solution, they show a maximum inhibition efficiency of 88.4% by adding 10% inhibitor. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie100168s

Comparison of the corrosion inhibitive effect of anaerobic and aerobic cigarette butts water extracts on N80 steel at 90 °C in hydrochloric acid solution / Jun Zhao in Industrial & engineering chemistry research, Vol. 49 N° 24 (Décembre 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 24 (Décembre 2010) . - pp. 12452-12460 Titre : Comparison of the corrosion inhibitive effect of anaerobic and aerobic cigarette butts water extracts on N80 steel at 90 °C in hydrochloric acid solution Type de document : texte imprimé Auteurs : Jun Zhao, Auteur ; Ningsheng Zhang, Auteur ; Chengtun Qu, Auteur Année de publication : 2011 Article en page(s) : pp. 12452-12460 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Steel  Extract  Aerobe  Anaerobe  Corrosion Résumé : The chemical compositions of cigarette butts water extracts mainly are aromatic amines including nicotine and its compounds. If oxygen exists, the aromatic amine compounds can be oxidized easily. Whether this oxidation would be beneficial in enhancing the corrosion inhibitive effect of the inhibitor is not known. In this study, the corrosion inhibitive effect of aerobic and anaerobic cigarette butts water extracts are compared on N80 steel at 90 °C in 15% (weight %) hydrochloric acid. The chemical compositions of the aerobic and anaerobic cigarette butts water extracts are also contrasted. Weight loss, X-ray diffraction, and electrochemical techniques (such as electrochemical noise, impedance, and potentiodynamic polarization) are used to evaluate the corrosion inhibitive effect of aerobic and anaerobic cigarette butts water extracts. Results show that the inhibition efficiency of the aerobic cigarette butts water extracts (92.9%) is higher than anaerobic cigarette butts water extracts (84.6%). DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23692000 [article] Comparison of the corrosion inhibitive effect of anaerobic and aerobic cigarette butts water extracts on N80 steel at 90 °C in hydrochloric acid solution [texte imprimé] / Jun Zhao, Auteur ; Ningsheng Zhang, Auteur ; Chengtun Qu, Auteur . - 2011 . - pp. 12452-12460. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 24 (Décembre 2010) . - pp. 12452-12460 Mots-clés : Steel  Extract  Aerobe  Anaerobe  Corrosion Résumé : The chemical compositions of cigarette butts water extracts mainly are aromatic amines including nicotine and its compounds. If oxygen exists, the aromatic amine compounds can be oxidized easily. Whether this oxidation would be beneficial in enhancing the corrosion inhibitive effect of the inhibitor is not known. In this study, the corrosion inhibitive effect of aerobic and anaerobic cigarette butts water extracts are compared on N80 steel at 90 °C in 15% (weight %) hydrochloric acid. The chemical compositions of the aerobic and anaerobic cigarette butts water extracts are also contrasted. Weight loss, X-ray diffraction, and electrochemical techniques (such as electrochemical noise, impedance, and potentiodynamic polarization) are used to evaluate the corrosion inhibitive effect of aerobic and anaerobic cigarette butts water extracts. Results show that the inhibition efficiency of the aerobic cigarette butts water extracts (92.9%) is higher than anaerobic cigarette butts water extracts (84.6%). DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=23692000

Nonlinear MPC using an identified LPV model / Zuhua Xu in Industrial & engineering chemistry research, Vol. 48 N° 6 (Mars 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 6 (Mars 2009) . - pp. 3043–3051 Titre : Nonlinear MPC using an identified LPV model Type de document : texte imprimé Auteurs : Zuhua Xu, Auteur ; Jun Zhao, Auteur ; Jixin Qian, Auteur Année de publication : 2009 Article en page(s) : pp. 3043–3051 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Nonlinear  model  predictive  control  Linear  parameter-varying  model  Nonlinear  model  predictive  control Résumé : A method of nonlinear model predictive control based on an identified LPV model is proposed. In process identification, a linear parameter varying (LPV) model approach is used. First, typical working-points are selected and linear models are identified using data sets at various working-points; then the LPV model is identified by interpolating the linear models using total data that include transition test data. Further, nonlinear model predictive control based on the LPV model is proposed. The control action is computed via a multistep linearization method of nonlinear optimization problem. The method uses low cost tests and can reach higher control performance than linear MPC. Simulation studies are used to verify the effectiveness of the method. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801057q [article] Nonlinear MPC using an identified LPV model [texte imprimé] / Zuhua Xu, Auteur ; Jun Zhao, Auteur ; Jixin Qian, Auteur . - 2009 . - pp. 3043–3051. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 6 (Mars 2009) . - pp. 3043–3051 Mots-clés : Nonlinear  model  predictive  control  Linear  parameter-varying  model  Nonlinear  model  predictive  control Résumé : A method of nonlinear model predictive control based on an identified LPV model is proposed. In process identification, a linear parameter varying (LPV) model approach is used. First, typical working-points are selected and linear models are identified using data sets at various working-points; then the LPV model is identified by interpolating the linear models using total data that include transition test data. Further, nonlinear model predictive control based on the LPV model is proposed. The control action is computed via a multistep linearization method of nonlinear optimization problem. The method uses low cost tests and can reach higher control performance than linear MPC. Simulation studies are used to verify the effectiveness of the method. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie801057q

Robust iterative learning control with quadratic performance index / Zuhua Xu in Industrial & engineering chemistry research, Vol. 51 N° 2 (Janvier 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 2 (Janvier 2012) . - pp. 872-881 Titre : Robust iterative learning control with quadratic performance index Type de document : texte imprimé Auteurs : Zuhua Xu, Auteur ; Jun Zhao, Auteur ; Yi Yang, Auteur Année de publication : 2012 Article en page(s) : pp. 872-881 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Learning Résumé : In this paper, a robust iterative learning control (ILC) designed through a linear matrix inequality (LMI) approach is proposed first, based on the worst-case performance index with ellipsoidal uncertainty and polytopic uncertainty, respectively. Since the design based on worst-case performance index is too conservative, a novel ILC design based on nominal performance index is further proposed, and its robust convergence properties are proven. The latter can give better performance when the nominal model is dose to the true process. Simulations have demonstrated the effectiveness and excellent performance of the proposed methods. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25476420 [article] Robust iterative learning control with quadratic performance index [texte imprimé] / Zuhua Xu, Auteur ; Jun Zhao, Auteur ; Yi Yang, Auteur . - 2012 . - pp. 872-881. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 2 (Janvier 2012) . - pp. 872-881 Mots-clés : Learning Résumé : In this paper, a robust iterative learning control (ILC) designed through a linear matrix inequality (LMI) approach is proposed first, based on the worst-case performance index with ellipsoidal uncertainty and polytopic uncertainty, respectively. Since the design based on worst-case performance index is too conservative, a novel ILC design based on nominal performance index is further proposed, and its robust convergence properties are proven. The latter can give better performance when the nominal model is dose to the true process. Simulations have demonstrated the effectiveness and excellent performance of the proposed methods. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=25476420

Synergized action of CuCI on recycled cigarette butts as corrosion inhibitor for N80 steel at 90 °C in 15% HCl / Juantao Zhang in Industrial & engineering chemistry research, Vol. 50 N° 12 (Juin 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 12 (Juin 2011) . - pp. 7264-7272 Titre : Synergized action of CuCI on recycled cigarette butts as corrosion inhibitor for N80 steel at 90 °C in 15% HCl Type de document : texte imprimé Auteurs : Juantao Zhang, Auteur ; Jun Zhao, Auteur ; Ningsheng Zhang, Auteur Année de publication : 2011 Article en page(s) : pp. 7264-7272 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Steel  Corrosion  inhibitor Résumé : One of effective ways to reduce pollution from cigarette butts is introduced by recycling the cigarette butts. Inhibitor from recycled cigarette butts shows good inhibition properties, but we do not know whether CuCl can help to improve the inhibition efficiency. So, in this study, the impact of CuCl on recycled cigarette butts as corrosion inhibitor for N80 steel at 90 °C in 15% HCl is studied by weight loss, electrochemical noise, polarization, impedance, and X-ray photoelectron spectroscopy. All the results show that the inhibition efficiency of water extracts from cigarette butts in the presence of CuCl is higher than in absence of CuCl, and it can reach 95.3% when 9% water extracts with copper added is used. The X-ray photoelectron spectroscopy results indicate that the N80 steel specimen surface is undamaged and covered with a protective coat formed by copper-added water extracts from cigarette butts. CuCl has synergizing action on recycled cigarette butts as a corrosion inhibitor for N80 steel at 90 °C in 15% HCl. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24239040 [article] Synergized action of CuCI on recycled cigarette butts as corrosion inhibitor for N80 steel at 90 °C in 15% HCl [texte imprimé] / Juantao Zhang, Auteur ; Jun Zhao, Auteur ; Ningsheng Zhang, Auteur . - 2011 . - pp. 7264-7272. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 12 (Juin 2011) . - pp. 7264-7272 Mots-clés : Steel  Corrosion  inhibitor Résumé : One of effective ways to reduce pollution from cigarette butts is introduced by recycling the cigarette butts. Inhibitor from recycled cigarette butts shows good inhibition properties, but we do not know whether CuCl can help to improve the inhibition efficiency. So, in this study, the impact of CuCl on recycled cigarette butts as corrosion inhibitor for N80 steel at 90 °C in 15% HCl is studied by weight loss, electrochemical noise, polarization, impedance, and X-ray photoelectron spectroscopy. All the results show that the inhibition efficiency of water extracts from cigarette butts in the presence of CuCl is higher than in absence of CuCl, and it can reach 95.3% when 9% water extracts with copper added is used. The X-ray photoelectron spectroscopy results indicate that the N80 steel specimen surface is undamaged and covered with a protective coat formed by copper-added water extracts from cigarette butts. CuCl has synergizing action on recycled cigarette butts as a corrosion inhibitor for N80 steel at 90 °C in 15% HCl. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24239040

A two-stage method for identification of dual-rate systems with fast input and very slow output / Shengyong Mo in Industrial & engineering chemistry research, Vol. 48 N°4 (Février 2009) 

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