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Received January 25, 2012
Accepted April 27, 2012
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Carbon dioxide reforming of methane to synthesis gas over LaNi1-xCrxO3 perovskite catalysts

Department of Chemical and Biological Engineering, Korea University, Anam-dong, Seongbuk-gu, Seoul 136-713, Korea 1Eco-Composite Materials Center, Korea Institute of Ceramic Engineering and Technology, Gasan-dong, Guemcheon-gu, Seoul 153-801, Korea
kibonglee@korea.ac.kr
Korean Journal of Chemical Engineering, October 2012, 29(10), 1329-1335(7), 10.1007/s11814-012-0057-5
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Abstract

Carbon dioxide reforming of methane was investigated over LaNi1-xCrxO3 perovskite catalysts which were prepared by the malic acid method. The respective perovskite catalysts were a single phase of perovskite oxide without impurity phases. Their reduction behavior was characterized by temperature programmed reduction. In the LaNi1-xCrxO3 perovskite catalysts, the catalytic activities were closely related to the reduction behavior of the catalysts, and the partial substitution of Cr to the B-site of perovskite catalysts promoted stability against reduction. When the x values were lower than 0.4, the LaNi1-xCrxO3 perovskite catalysts were decomposed to La2O3 and Ni and the decomposition of perovskite structure led to large coke deposition. When the x values were higher than 0.4, the LaNi1-xCrxO3 perovskite catalysts showed reduced catalytic activity but became stable to reduction and coke formation in the reforming reaction.

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