Separation of p-chloronitrobenzene and o-chloronitrobenzene by selective adsorption using Silicalite-1 zeolite / Zhaobing Guo in Chemical engineering journal, Vol. 155 N° 3 (Decembre 2009)  

Public ISBD [article]  inChemical engineering journal > Vol. 155 N° 3 (Decembre 2009) . - pp. 654-659 Titre : Separation of p-chloronitrobenzene and o-chloronitrobenzene by selective adsorption using Silicalite-1 zeolite Type de document : texte imprimé Auteurs : Zhaobing Guo, Auteur ; Shourong Zheng, Auteur ; Zheng Zheng, Auteur Année de publication : 2010 Article en page(s) : pp. 654-659 Note générale : Génie Chimique Langues : Anglais (eng) Mots-clés : Chloronitrobenzene Silicalite-1 zeolite Adsorption Separation Index. décimale : 660 Résumé : Silicalite-1 zeolite was used for selective adsorption and separation of p-chloronitrobenzene (p-CNB) and o-chloronitrobenzene (o-CNB). Maximum adsorption amounts of p-CNB in the zeolite are found to be approximately 4 molecules per unit cell (mol./u.c.), much higher than those of o-CNB. p-CNB molecules are considered to be located in zeolite intersections and channels. CNBs adsorption in Silicalite-1 zeolite follows pseudo-second-order kinetic model. Adsorption amounts and temperatures are the important parameters in affecting CNBs adsorption rate constants. Adsorption rate constants of p-CNB are higher than those of o-CNB in Silicalite-1 zeolite. p-CNB with a purity of 94.9% and o-CNB of 96.1% can be recovered with Silicalite-1 zeolite under an optimal separation condition investigated. Compared with Silicalite-1 zeolite, the presence of acid sites in zeolites is not only favorable for p-CNB selective adsorption from CNBs aqueous solution, but also improves the adsorption heat of p-CNB. DEWEY : 660 ISSN : 1385-8947 En ligne : http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TFJ-4X49YKT-2&_user=6 [...] [article] Separation of p-chloronitrobenzene and o-chloronitrobenzene by selective adsorption using Silicalite-1 zeolite [texte imprimé] / Zhaobing Guo, Auteur ; Shourong Zheng, Auteur ; Zheng Zheng, Auteur . - 2010 . - pp. 654-659. Génie Chimique Langues : Anglais (eng) in Chemical engineering journal > Vol. 155 N° 3 (Decembre 2009) . - pp. 654-659 Mots-clés : Chloronitrobenzene Silicalite-1 zeolite Adsorption Separation Index. décimale : 660 Résumé : Silicalite-1 zeolite was used for selective adsorption and separation of p-chloronitrobenzene (p-CNB) and o-chloronitrobenzene (o-CNB). Maximum adsorption amounts of p-CNB in the zeolite are found to be approximately 4 molecules per unit cell (mol./u.c.), much higher than those of o-CNB. p-CNB molecules are considered to be located in zeolite intersections and channels. CNBs adsorption in Silicalite-1 zeolite follows pseudo-second-order kinetic model. Adsorption amounts and temperatures are the important parameters in affecting CNBs adsorption rate constants. Adsorption rate constants of p-CNB are higher than those of o-CNB in Silicalite-1 zeolite. p-CNB with a purity of 94.9% and o-CNB of 96.1% can be recovered with Silicalite-1 zeolite under an optimal separation condition investigated. Compared with Silicalite-1 zeolite, the presence of acid sites in zeolites is not only favorable for p-CNB selective adsorption from CNBs aqueous solution, but also improves the adsorption heat of p-CNB. DEWEY : 660 ISSN : 1385-8947 En ligne : http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TFJ-4X49YKT-2&_user=6 [...]

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