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Transalkylation of toluene with trimethylbenzenes over large-pore zeolites
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SYSNO ASEP 0342472 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Transalkylation of toluene with trimethylbenzenes over large-pore zeolites Tvůrce(i) Krejčí, Andrea (UFCH-W)
Al-Khattal, S. (SA)
Ashraf Ali, M. (SA)
Voláková, Martina (UFCH-W)
Čejka, Jiří (UFCH-W) RID, ORCID, SAIZdroj.dok. Applied Catalysis A - General. - : ELSEVIER SCIENCE BV - ISSN 0926-860X
Roč. 377, 1-2 (2010), s. 99-106Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova transalkylation ; toluene ; zeolites Beta Vědní obor RIV CF - Fyzikální chemie a teoretická chemie CEP 1QS400400560 GA AV ČR - Akademie věd CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000276419000014 DOI 10.1016/j.apcata.2010.01.026 Anotace Zeolites Beta, mordenite and Y were evaluated for their activity in transalkylation reaction of toluene with trimethylbenzenes. Zeolite Beta was found to possess the highest conversion in toluene-trimethylbenzene transalkylation as well as a higher stability in time-on-stream compared with mordenite and zeolite Y. The effect of Si/Al ratio in zeolite Beta was evaluated and it was found that transalkylation activity and xylene yields increase with decreasing Si/Al ratio. Zeolite Beta with the lowest Si/Al ratio of 12.5 (the highest concentration of active sites) exhibited the highest 1,2,4-trimethylbenzene (124TMB) conversion and maximum xylene yield. The highest xylene yield was obtained at optimum equimolar ratio (1:1) of 124TMB to toluene. With increasing 124TMB concentration in the feed, the conversion of 124TMB and xylene yield decreased while toluene conversion simultaneously increased. Pracoviště Ústav fyzikální chemie J.Heyrovského Kontakt Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Rok sběru 2011
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