Effects of added phosphorus on conversion of ethanol to propylene over ZSM-5 catalysts

Atsushi Takahashi, Wei Xia, Isao Nakamura, Hiromichi Shimada, Tadahiro Fujitani

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

We investigated the effects of added phosphorus on the conversion of ethanol to propylene over ZSM-5 zeolite catalysts. We found that the activity of the catalysts was enhanced by the addition of phosphorus, and we suggest that the added phosphorus suppressed oligomerization of propylene and butene by decreasing the acidity of the active sites of the zeolites. Furthermore, the addition of phosphorus greatly enhanced the hydrothermal stability of the zeolites and thus substantially improved the catalyst durability during ethanol conversion. Carbon deposition, which was the main cause of deactivation of the phosphorus-modified zeolites, was suppressed by H 2O produced by dehydration of ethanol.

Original languageEnglish
Pages (from-to)162-167
Number of pages6
JournalApplied Catalysis A: General
Volume423-424
DOIs
Publication statusPublished - 2012 May 7
Externally publishedYes

Keywords

  • Carbon deposition
  • Ethanol
  • P-ZSM-5
  • Propylene

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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