Shape selectivity of MWW-type aluminosilicate zeolites in the alkylation of toluene with methanol

Satoshi Inagaki, Kohei Kamino, Eiichi Kikuchi, Masahiko Matsukata

Research output: Contribution to journalArticle

54 Citations (Scopus)

Abstract

We investigated the alkylation of toluene with methanol at 250 °C over MCM-22 and ITQ-2 zeolites possessing an MWW structure. Whereas ITQ-2, produced by the delamination of MCM-22 precursor, showed a poor p-xylene selectivity of 23% at 1.7% of the level of toluene conversion, a high p-xylene selectivity of 80% at 0.6% of the level of toluene conversion was obtained by poisoning the external surface of ITQ-2 with collidine. Similarly, MCM-22 treated with collidine showed a high p-xylene selectivity of 74% at 3.8% of the level of toluene conversion. We concluded that both interlayer and intralayer 10-membered ring (10MR) micropores in the MWW structure caused the shape-selective formation of p-xylene in the alkylation of toluene with methanol.

Original languageEnglish
Pages (from-to)22-27
Number of pages6
JournalApplied Catalysis A: General
Volume318
DOIs
Publication statusPublished - 2007 Feb 20

Keywords

  • Alkylation of toluene with methanol
  • Collidine
  • ITQ-2 zeolite
  • MCM-22 zeolite
  • Shape selectivity

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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