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|Title:||Selective oxidation of CO in hydrogen-rich mixtures and kinetics investigation on platinum-gold supported on zinc oxide catalyst||Authors:||Wang, Y.H.
Selective oxidation CO
|Issue Date:||21-Apr-2006||Citation:||Wang, Y.H., Zhu, J.L., Zhang, J.C., Song, L.F., Hu, J.Y., Ong, S.L., Ng, W.J. (2006-04-21). Selective oxidation of CO in hydrogen-rich mixtures and kinetics investigation on platinum-gold supported on zinc oxide catalyst. Journal of Power Sources 155 (2) : 440-446. ScholarBank@NUS Repository.||Abstract:||A series of gold zinc oxide catalysts have been prepared using a coprecipitation procedure and selective oxidation of CO in hydrogen-rich mixtures was investigated in a fixed-bed reactor in the temperature range from 313 to 393 K. The results showed that the suitable content of Au in ZnO was about 1.5 wt.% and calcined at 573 K, shortened as Au (1.5)/ZnO-573. Stability investigation, performed at 353 K and lasted for 500 h, indicated Au (1.5)/ZnO-573 catalyst activity was slightly deteriorated as time on stream was over 350 h. Investigation indicated little addition of platinum into Au (1.5)/ZnO-573 catalyst could definitely improve its stability. However, further study showed that the selectivity of removal of CO from hydrogen-rich mixtures for Au (1.5)-Pt/ZnO-573 catalyst would be decreased with increasing content of Pt on the catalyst when Pt content was over 1.0 wt.%, which indicates that the suitable content of Pt would be 1.0 wt.% and the catalyst was indicated as Au (1.5)-Pt (1.0)/ZnO-573. Kinetic experiments performed on it were carried out in an isothermal fixed-bed microreactor under intrinsic conditions. © 2005 Elsevier B.V. All rights reserved.||Source Title:||Journal of Power Sources||URI:||http://scholarbank.nus.edu.sg/handle/10635/87633||ISSN:||03787753|
|Appears in Collections:||Staff Publications|
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