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

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 conver...

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Bibliographic Details
Published in:The Korean journal of chemical engineering 2019, 36(8), 233, pp.1243-1248
Main Authors: Na, Hyun-Suk, Ahn, Seon-Yong, Shim, Jae-Oh, Jeon, Kyung-Won, Kim, Hak-Min, Lee, Yeol-Lim, Jang, Won-Jun, Jeon, Byong-Hun, Roh, Hyun-Seog
Format: Article
Language:English
Subjects:
Aluminum
Biotechnology
Catalysis
Catalysts
Chemical precipitation
Chemistry
Chemistry and Materials Science
Copper
Crystallites
Industrial Chemistry/Chemical Engineering
Materials Science
Organic chemistry
Properties (attributes)
Reaction Engineering
Shift reaction
Zinc
화학공학
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Summary: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.
ISSN:0256-1115
1975-7220
DOI:10.1007/s11814-019-0309-8