Copper-based catalysts for water gas shift reaction: influence of support on their catalytic activity

TitleCopper-based catalysts for water gas shift reaction: influence of support on their catalytic activity
Publication TypeJournal Article
Year of Publication2009
AuthorsPradhan, S, A. Reddy, S, Devi, RN, Chilukuri, SV
JournalCatalysis Today
Volume141
Issue1-2
Pagination72-76
Date PublishedMAR
Type of ArticleArticle
ISSN0920-5861
Keywordsceria, Ceria-titania, Ceria-zirconia, Co-precipitation, Copper, Water gas shift
Abstract

Three copper containing catalysts supported on ceria and mixed oxides of ceria with zirconia and titania were prepared by co-precipitation method and their catalytic activity was tested for water gas shift (WGS) reaction. High surface area (>100m(2)/g) mixed oxides were obtained following the present method of preparation. The catalysts were characterized by XRD, H(2)-temperature programmed reduction (TPR), UV-vis and XPS. Catalytic activity was evaluated for water gas shift reaction in the 200-400 degrees C temperature range, The gas hourly space velocity was varied from 5000 to 25,000h(-1) for better evaluation and comparison of their performance. The effect of CO(2) in the feed gas mixture on the WGS activity of these catalysts was also studied. Among the three catalysts studied, CuO-CeO(2)-ZrO(2) mixed oxide shows better activity, implying the influence of support. Characterization of the catalysts after WGS reaction was also carried out in order to investigate structure-property correlation. (c) 2008 Elsevier B.V. All rights reserved.

DOI10.1016/j.cattod.2008.06.026
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)

2.993

Divison category: 
Catalysis and Inorganic Chemistry