Isoamylene trimerzization in liquid-phase over ino exchange resins and zeolites / Marta Granollers in Industrial & engineering chemistry research, Vol. 49 N° 8 (Avril 2010)  

Public ISBD [article]  inIndustrial & engineering chemistry research > Vol. 49 N° 8 (Avril 2010) . - pp. 3561–3570 Titre : Isoamylene trimerzization in liquid-phase over ino exchange resins and zeolites Type de document : texte imprimé Auteurs : Marta Granollers, Auteur ; José F. Izquierdo, Auteur ; Javier Tejero, Auteur Année de publication : 2010 Article en page(s) : pp. 3561–3570 Note générale : Industrial Chemistry Langues : Anglais (eng) Mots-clés : Isoamylene Trimerization Liquid-Phase Ion Exchange Resins Zeolites Résumé : Liquid-phase trimerization of 2-methyl-1-butene and 2-methyl-2-butene mixtures over solid acid catalysts was carried out in a batch-stirred tank reactor in the temperature range 333−373 K. Diisoamylenes and triisoamylenes were the main products. Cracking products among C6−C9 and C11−C14 were also obtained under the assayed conditions. The catalityc performance of five different acidic ion exchange resins (Amberlyst 15, Amberlyst 35, Amberlyst 70, Purolite CT-252, Purolite CT-276) and four zeolites (H-BEA-25, H-FAU-30, H-FAU-6 and H-MOR-20) was assessed. Experimental results showed that Amberlyst 15 and H-FAU-30 were the best catalysts for isoamylene trimerization, with selectivities above 40% at 373 K. The most influencing physical properties of the catalysts on the selectivity toward dimers and trimers were acid capacity, acid strength, and specific surface area for resins, and microporous surface area for zeolites. Isoamylene trimerization extent was larger at higher temperature. The most probable mechanism of formation of these compounds involves the reaction between one molecule of dimer with one molecule of isoamylenes, although trimers could also be formed directly from three molecules of isoamylenes. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901382p?journalCode=iecred [article] Isoamylene trimerzization in liquid-phase over ino exchange resins and zeolites [texte imprimé] / Marta Granollers, Auteur ; José F. Izquierdo, Auteur ; Javier Tejero, Auteur . - 2010 . - pp. 3561–3570. Industrial Chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 8 (Avril 2010) . - pp. 3561–3570 Mots-clés : Isoamylene Trimerization Liquid-Phase Ion Exchange Resins Zeolites Résumé : Liquid-phase trimerization of 2-methyl-1-butene and 2-methyl-2-butene mixtures over solid acid catalysts was carried out in a batch-stirred tank reactor in the temperature range 333−373 K. Diisoamylenes and triisoamylenes were the main products. Cracking products among C6−C9 and C11−C14 were also obtained under the assayed conditions. The catalityc performance of five different acidic ion exchange resins (Amberlyst 15, Amberlyst 35, Amberlyst 70, Purolite CT-252, Purolite CT-276) and four zeolites (H-BEA-25, H-FAU-30, H-FAU-6 and H-MOR-20) was assessed. Experimental results showed that Amberlyst 15 and H-FAU-30 were the best catalysts for isoamylene trimerization, with selectivities above 40% at 373 K. The most influencing physical properties of the catalysts on the selectivity toward dimers and trimers were acid capacity, acid strength, and specific surface area for resins, and microporous surface area for zeolites. Isoamylene trimerization extent was larger at higher temperature. The most probable mechanism of formation of these compounds involves the reaction between one molecule of dimer with one molecule of isoamylenes, although trimers could also be formed directly from three molecules of isoamylenes. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie901382p?journalCode=iecred

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