Synthesis of LEV zeolite by interzeolite conversion method and its catalytic performance in ethanol to olefins reaction

Takayuki Inoue, Masaya Itakura, Hery Jon, Yasunori Oumi, Atsushi Takahashi, Tadahiro Fujitani, Tsuneji Sano

Research output: Contribution to journalArticlepeer-review

78 Citations (Scopus)

Abstract

The highly crystalline and pure LEV zeolite was obtained from the hydrothermal conversion of FAU zeolite as a crystalline aluminosilicate source in the presence of choline hydroxide. As LEV zeolite was not obtained from a conventional amorphous aluminosilicate gel, the advantage and uniqueness of the hydrothermal conversion of FAU zeolite was proven. The hydrothermal conversion of FAU zeolite into LEV zeolite depended significantly upon the Si/Al ratio of the starting FAU zeolite. Only the FAU zeolites with Si/Al ratios of 16-22 were converted into LEV zeolite. Most of all choline species as a SDA existed intact in zeolitic pores. As expected, the protonated LEV zeolite exhibited a good performance for conversion of ethanol to light olefins. The product yields were 35.8% of C2H4 and 34.4% of C3H6.

Original languageEnglish
Pages (from-to)149-154
Number of pages6
JournalMicroporous and Mesoporous Materials
Volume122
Issue number1-3
DOIs
Publication statusPublished - 2009 Jun 1
Externally publishedYes

Keywords

  • Choline hydroxide
  • Ethanol conversion
  • FAU zeolite
  • Interzeolite conversion
  • LEV zeolite

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

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