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Comparison of Activity and Selectivity of SSZ-33 Based Catalyst with other Zeolites in Toluene Disproportionation

SYSNO ASEP	0323279
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Comparison of Activity and Selectivity of SSZ-33 Based Catalyst with other Zeolites in Toluene Disproportionation
Title	Srovnání aktivity a selektivity katalyzátorů na bázi SSZ-33 s jinými zeolity v disproporcionaci toluenu
Author(s)	Al-Khattaf, S. (SA) Musilová, Zuzana (UFCH-W) Ali, M. A. (SA) Čejka, Jiří (UFCH-W)_{RID, ORCID, SAI}
Source Title	Topics in Catalysis. - : Springer - ISSN 1022-5528 Roč. 52, 1-2 (2009), s. 140-147
Number of pages	8 s.
Language	eng - English
Country	NL - Netherlands
Keywords	SSZ-33 ; ZSM-5 zeolites ; mesoporous ZSM-5 ; molybdenum
Subject RIV	CF - Physical ; Theoretical Chemistry
R&D Projects	1QS400400560 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
	GD203/08/H032 GA ČR - Czech Science Foundation (CSF)
CEZ	AV0Z40400503 - UFCH-W (2005-2011)
UT WOS	000263428100013
DOI	10.1007/s11244-008-9150-8
Annotation	SSZ-33 based-catalyst, after modification with Mo and alumina binder, was evaluated in long-run tests in the toluene disproportionation in the presence of hydrogen as a carrier gas. The activity and selectivity of this catalyst were compared with those of ZSM-5 and mesoporous ZSM-5 prepared with the same concentration of Mo and alumina. Formation of the final catalysts decreased the void volume of micropores in order SSZ-33 > ZSM-5 > ZSM-5/Meso. Simultaneously, the concentration of Lewis acid sites increased due to the addition of alumina to the catalyst. The highest toluene conversion was achieved with SSZ-33 catalyst comprising 12-12-10-ring channels, which is the result of high acidity of this zeolite together with increased mass transport through large pores. ZSM-5 zeolite exhibited lower toluene conversion while only a low activity was found for mesoporous ZSM-5 probably due to the limitations of the access to the zeolite channels after modification with alumina.
Workplace	J. Heyrovsky Institute of Physical Chemistry
Contact	Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196
Year of Publishing	2009

Number of the records: 1