Effect of copper precursors to the activity for dimethyl ether synthesis from syngas over Cu-ZnO/γ-Al2O3 bifunctional catalysts

Seung Chan Baek, Suk Hwan Kang, Jong Wook Bae, Yun Jo Lee, Dong Hyun Lee, Kwan Young Lee

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The effect of precursors, such as copper nitrate, acetate, and chloride, on the bifunctional Cu-ZnO/γ-Al2O3 catalysts was investigated for the direct dimethyl ether (DME) synthesis from syngas. The catalysts were characterized by measuring the reducibility and the surface area of metallic copper, together with their acidity. The well-dispersed copper particles with a high reducibility as well as a large amount of weak acidic sites on the bifunctional Cu-ZnO/γ-Al2O3 catalysts, prepared from a copper acetate precursor, are responsible for its high catalytic activity. The quantity of the acidic sites is a more crucial factor for obtaining a high DME yield than the surface area of metallic copper on the bifunctional catalyst.

Original languageEnglish
Pages (from-to)2438-2443
Number of pages6
JournalEnergy and Fuels
Volume25
Issue number6
DOIs
Publication statusPublished - 2011 Jun 16

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology

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