Effect of precipitation on physico-chemical and catalytic properties of Cu-Zn-Al catalyst for water-gas shift reaction

Hyun Suk Na, Seon Yong Ahn, Jae Oh Shim, Kyung Won Jeon, Hak Min Kim, Yeol Lim Lee, Won Jun Jang, Byong-Hun Jeon, Hyun Seog Roh

Research output: Contribution to journalArticle

Abstract

To investigate the effect of precipitation on physico-chemical and catalytic properties of Cu-Zn-Al catalyst, the pH value and injection rate in the precipitation process were systematically changed, and the water-gas shift reaction was carried out. The Cu-Zn-Al catalyst showed the highest CO conversion when the optimized synthesis parameters (i.e., pH=10-10.5 and injection rate=30 ml/min) were employed. This is mainly due to the enhanced physicochemical properties such as a high Brunauer-Emmett-Teller surface area, small crystallite size, high Cu dispersion, and easier reducibility.

Original languageEnglish
Pages (from-to)1243-1248
Number of pages6
JournalKorean Journal of Chemical Engineering
Volume36
Issue number8
DOIs
Publication statusPublished - 2019 Aug 1

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Keywords

  • Cu-Zn-Al
  • Injection Rate
  • Precipitation Process
  • Water-gas Shift
  • pH

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