Topics in Catalysis

, Volume 53, Issue 3–4, pp 273–282

Post-Synthesis Modification of SSZ-35 Zeolite to Enhance the Selectivity in p-Xylene Alkylation with Isopropyl Alcohol

  • Zuzana Musilová-Pavlačková
  • Stacey I. Zones
  • Jiří Čejka
Original Paper

DOI: 10.1007/s11244-009-9410-2

Cite this article as:
Musilová-Pavlačková, Z., Zones, S.I. & Čejka, J. Top Catal (2010) 53: 273. doi:10.1007/s11244-009-9410-2

Abstract

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.

Keywords

SSZ-35 Surface modification p-Xylene 2,5-Dimethylcumene Acidity 

Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Zuzana Musilová-Pavlačková
    • 1
  • Stacey I. Zones
    • 2
  • Jiří Čejka
    • 1
  1. 1.J. Heyrovský Institute of Physical ChemistryAcademy of Sciences of the Czech Republic, v.v.i.Prague 8Czech Republic
  2. 2.Chevron Energy and Technology CompanyRichmondUSA

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