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Reaction Kinetics and Catalysis Letters

, Volume 51, Issue 1, pp 125–134 | Cite as

Alkylation of aromatics on p-containing ZSM-5 zeolites

  • V. N. Romannikov
  • A. J. Tissler
  • R. Thome
Article

Abstract

The catalytic activity of ZSM-5 zeolites, modified with phosphorus compounds, has been studied in benzene and toluene alkylation by ethylene. Concentration of acid sites of different nature in the samples was characterized by IR spectroscopy of OH-groups and adsorbed CO. Modification was shown to decrease the concentrations of both strong protic and non-aprotic sites. New acid sites are assumed to appear in P-containing zeolites. The strength of acid sites in the zeolites is supposed to follow the sequence:[[SiOAl]H]≫[POH]> >[MgOH. Activity and regioselectivity of P-containing zeolites are considered to depend on the nature and concentration of the acid sites.

Keywords

Spectroscopy Ethylene Physical Chemistry Phosphorus Benzene 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Akadémiai Kiadó 1993

Authors and Affiliations

  • V. N. Romannikov
    • 1
  • A. J. Tissler
    • 2
  • R. Thome
    • 2
  1. 1.Boreskov Institute of CatalysisNovosibirskRussia
  2. 2.VAW AGBonn 1Germany

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