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Post-Synthesis Modification of SSZ-35 Zeolite to Enhance the Selectivity in p-Xylene Alkylation with Isopropyl Alcohol
- 1.0341713 - ÚFCH JH 2011 RIV NL eng J - Journal Article
Musilová, Zuzana - Zones, S. I. - Čejka, Jiří
Post-Synthesis Modification of SSZ-35 Zeolite to Enhance the Selectivity in p-Xylene Alkylation with Isopropyl Alcohol.
Topics in Catalysis. Roč. 53, 3-4 (2010), s. 273-282. ISSN 1022-5528. E-ISSN 1572-9028
R&D Projects: GA AV ČR 1QS400400560; GA ČR GD203/08/H032
Institutional research plan: CEZ:AV0Z40400503
Keywords : SSZ-35 * surface modification * p-xylene * 2,5-dimethylcumene
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 2.359, year: 2010
Modification of textural and chemical properties of SSZ-35 was investigated in respect to the catalytic behavior of this zeolite in p-xylene alkylation with isopropyl alcohol. Acidic treatment of the external surface of SSZ-35 crystals resulted in a decrease in the void volume of the zeolite and in the concentration of acid sites mainly located on the external surface. This was evidenced from the FTIR spectra of adsorbed pyridine and 2,6-di-tert-butylpyridine. The modification caused a significant increase in the selectivity to 2,5-dimethylcumene while the p-xylene conversion decreased only very slightly.
Permanent Link: http://hdl.handle.net/11104/0184611
Number of the records: 1