Alkylation of Isobutane by 1-Butene over H-beta Zeolite in CSTR (Part 2) Deactivation Mechanism of Zeolite Catalyst and Optimization of CSTR Conditions

Yasushi Sekine; Yu-ichi Tajima; Yo-suke Ichikawa; Masahiko Matsukata; Eiichi Kikuchi

doi:10.1627/jpi.55.308

Regular Paper

Alkylation of Isobutane by 1-Butene over H-beta Zeolite in CSTR (Part 2) Deactivation Mechanism of Zeolite Catalyst and Optimization of CSTR Conditions

Yasushi Sekine , Yu-ichi Tajima, Yo-suke Ichikawa, Masahiko Matsukata, Eiichi Kikuchi

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Keywords: Isobutane alkylation, Beta zeolite, Continuously stirred tank reactor, Deactivation

JOURNAL FREE ACCESS

2012 Volume 55 Issue 5 Pages 308-318

DOI https://doi.org/10.1627/jpi.55.308

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Abstract

DGC-H-beta zeolite catalyst has higher activity and selectivity for the alkylation of isobutane with 1-butene in a CSTR. The cause of the deactivation of the catalyst and the optimum reaction conditions were investigated. Deactivation of the catalyst was caused not by adsorbed carbon species but by hydrocarbons formed by multiple alkylation or oligomerization of olefin. Optimized conditions to avoid these reactions achieved stable selective alkylation.

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