Relative roles of methanol synthesis and solid acid catalysts in the direct DME synthesis from syngas

Heon Jung, Seong Min Lee, Dae Ryook Yang, Kwang Deog Jung

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The Cu/ZnO/Al<inf>2</inf>O<inf>3</inf> catalysts with 13.0 and 30.6 m<sup>2</sup>Cu/g were designated as HM (highly active catalysts for methanol synthesis) and LM (low active catalysts for methanol synthesis), respectively. γ-Al<inf>2</inf>O<inf>3</inf> and η-Al<inf>2</inf>O<inf>3</inf> were designated as LD (low active catalysts for methanol dehydration) and HD (highly active catalysts for methanol dehydration), respectively. Four catalytic systems (LMLD, LMHD, HMLD, and HMHD) were prepared by admixing methanol synthesis catalysts and methanol dehydration catalysts. The syngas to dimethyl ether (DME) (STD) reaction was conducted at a GHSV of 6000 mL/g<inf>cat</inf>/h, 42 atm, and 250 °C. The activity of LMLD was almost same as that of LMDH, indicating that the activity of solid acid catalysts did not influence the STD reaction on the admixed catalysts using LM. On the other hand, the activity of HMHD was much higher than that of HMLD, indicating that the solid acid catalysts controlled the STD reaction on the admixed catalysts using HM.

Original languageEnglish
Pages (from-to)1221-1225
Number of pages5
JournalBulletin of the Korean Chemical Society
Volume36
Issue number4
DOIs
Publication statusPublished - 2015 Apr 1

Keywords

  • Direct DME synthesis
  • Effects of Cu surface area
  • Methanol dehydration
  • Methanol synthesis

ASJC Scopus subject areas

  • Chemistry(all)

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