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Citation: LI Yu-Min, GENG Yun-Feng, WANG Ri-Jie, ZHANG Ji-Yan, ZHANG Liu. Co-Mo-K Sulfur-tolerant Water Gas Shift Catalyst Supported on ZrO₂-Al₂O₃[J]. Chinese Journal of Applied Chemistry, ;2000, 17(3): 276-279. shu

Co-Mo-K Sulfur-tolerant Water Gas Shift Catalyst Supported on ZrO₂-Al₂O₃

1.
School of Chemical Engineering, Tianjin University, Tianjin 300072

Received Date: 6 December 1999
Available Online: 30 January 2000
Fund Project: 中国石油化学工业总公司资助项目(293003) (293003)

The ZrO₂-Al₂O₃ supports were prepared by the decomposition-precipitation method. The sulfur-tolerant water-gas shift Co-Mo-K catalysts were prepared by impregnation. The effects of ZrO₂-Al₂O₃ support on the activity and thermal stability of Co-Mo-K catalyst have been studied through activity evaluation. Using BET, XRD, TG and XPS techniques the structures of the supports and catalysts, the reduction property, sulfur and water adsorbabilities of the catalysts have been investigated. The results show that the ZrO₂-Al₂O₃ supported Co-Mo-K catalysts exhibit a high activity, especially at low temperatures. The conversion of CO could reach up to 72.8% at 250℃ over the Z8 catalyst, being 25% higher than that over V-Al₂O₃ supported catalyst. The thermal stability, water and sulfur adsorbab ility and reduction property of the catalyst are all found improved on the ZrO₂-Al₂O₃ support.
- sulfur-tolerant water gas shift reaction,
- ZrO₂-Al₂O₃ support,
- Co-Mo-K catalyst
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Co-Mo-K Sulfur-tolerant Water Gas Shift Catalyst Supported on ZrO₂-Al₂O₃