Dehydrogenation of methylcyclohexane to produce high - purity hydrogen using membrane reactors with amorphous silica membranes / Kazunori Oda in Industrial & engineering chemistry research, Vol. 49 N° 22 (Novembre 2010)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 49 N° 22 (Novembre 2010) . - pp. 11287-11293 Titre : Dehydrogenation of methylcyclohexane to produce high - purity hydrogen using membrane reactors with amorphous silica membranes Type de document : texte imprimé Auteurs : Kazunori Oda, Auteur ; Kazuki Akamatsu, Auteur ; Takashi Sugawara, Auteur Année de publication : 2011 Article en page(s) : pp. 11287-11293 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Membrane reactor High purity Dehydrogenation Résumé : We developed a membrane reactor that can produce high-purity hydrogen in one step from methylcyclohexane. This membrane reactor combined a hydrogen-selective amorphous silica membrane prepared with dimethoxy-diphenylsilane and oxygen and employing counter-diffusion chemical vapor deposition, and Pt/Al2O3 catalyst. The silica membrane showed excellent hydrogen permeance at 573 K of the order of 10-5 mol m-2 s-1Pa-1 and high hydrogen/sulfur hexafluoride permselectivity of around 104. The membrane reactor exhibited equilibrium shifts as expected under reaction temperatures ranging from 473 to 553 K and reaction pressures ranging from 0.1 to 0.25 MPa, and these performances were successfully predicted using a simulation model, which was also developed in this study. Finally, we demonstrated that hydrogen with purity as high as 99.95% was produced from methylcyclohexane in the membrane reactor without using carrier gas or sweep gas. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101210x [article] Dehydrogenation of methylcyclohexane to produce high - purity hydrogen using membrane reactors with amorphous silica membranes [texte imprimé] / Kazunori Oda, Auteur ; Kazuki Akamatsu, Auteur ; Takashi Sugawara, Auteur . - 2011 . - pp. 11287-11293. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 22 (Novembre 2010) . - pp. 11287-11293 Mots-clés : Membrane reactor High purity Dehydrogenation Résumé : We developed a membrane reactor that can produce high-purity hydrogen in one step from methylcyclohexane. This membrane reactor combined a hydrogen-selective amorphous silica membrane prepared with dimethoxy-diphenylsilane and oxygen and employing counter-diffusion chemical vapor deposition, and Pt/Al2O3 catalyst. The silica membrane showed excellent hydrogen permeance at 573 K of the order of 10-5 mol m-2 s-1Pa-1 and high hydrogen/sulfur hexafluoride permselectivity of around 104. The membrane reactor exhibited equilibrium shifts as expected under reaction temperatures ranging from 473 to 553 K and reaction pressures ranging from 0.1 to 0.25 MPa, and these performances were successfully predicted using a simulation model, which was also developed in this study. Finally, we demonstrated that hydrogen with purity as high as 99.95% was produced from methylcyclohexane in the membrane reactor without using carrier gas or sweep gas. DEWEY : 660 ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie101210x

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