Role of Ceria in Non-precious Metal Oxide Catalysts(Ⅴ)─The Effect of Environmental Temperature on the Properties of Cu-Mn-Ce-O catalyst

Chem. J. Chinese Universities ›› 1994, Vol. 15 ›› Issue (6): 895.

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Role of Ceria in Non-precious Metal Oxide Catalysts(Ⅴ)─The Effect of Environmental Temperature on the Properties of Cu-Mn-Ce-O catalyst

LU Guan-Zhong, WANG Xing-Yi, WNAG Ren, WU Shan-Liang

Research Institute of Industrial Catalysis, East China University of Science and Technology, Shangai, 200237

Received:1993-07-15 Revised:1993-11-28 Online:1994-06-24 Published:1994-06-24

Abstract

Abstract: In this paper, the effects of an environmental temperature on the surface area, solid structures, oxygen properties and catalytic actlvities of Cu-Mn-Ce-Osupported on alumina have been studied.The results indicate that as a promoter, CeO₂ can not inhibit the reduction of surface area of the supporter at high temperature, but can inhibit the crystal growth of CuMn₂O₄ spinel in the catalyst and avoid the sinter of the amorphus active solidcompounds in catalysts, and increase the thermostability of the catalysts.In particular, over temperature 800℃ the promoting effect of CeO₂ in the catalyst is more obvious, in which the atom ratio of Ce/Cu is 0.38-0.44.

Key words: Cerium oxide, Copper oxide, Manganese oxide, Catalyst, Thermostability

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LU Guan-Zhong, WANG Xing-Yi, WNAG Ren, WU Shan-Liang. Role of Ceria in Non-precious Metal Oxide Catalysts(Ⅴ)─The Effect of Environmental Temperature on the Properties of Cu-Mn-Ce-O catalyst[J]. Chem. J. Chinese Universities, 1994, 15(6): 895.

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Role of Ceria in Non-precious Metal Oxide Catalysts(Ⅴ)─The Effect of Environmental Temperature on the Properties of Cu-Mn-Ce-O catalyst

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