Effects of Rare Earth Doping on the Performance of Nano-Ba-Magnesia Supports and Ru-Based Catalysts for Ammonia Synthesis

Chinese Journal of Catalysis ›› 2009, Vol. 30 ›› Issue (3): 218-222.

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Effects of Rare Earth Doping on the Performance of Nano-Ba-Magnesia Supports and Ru-Based Catalysts for Ammonia Synthesis

HUO Chao*, XIA Qinghua, YANG Xiazhen, LUO Yan, LIU Huazhang

College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, Zhejiang, China

Received:2009-03-25 Online:2009-03-25 Published:2012-12-19

Abstract

Abstract: The Ru catalysts were prepared by the impregnation method using rare earth (La, Sm, and Ce) and barium-doped nano- magnesia (RE-Ba-MgO) as the supports. The Ru/La-Ba-MgO catalyst showed the highest catalytic activity for the ammonia synthesis with a reaction rate of 65.49 mmol/(g•h) at 10 MPa, 400 oC, and 10 000 h?1, upgrading 66.3% compared with Ru/Ba-MgO. It would be valuable for the development of effective and applicable catalysts for the ammonia synthesis industry.

Key words: rare earth, barium-doped nano-magnesia, ruthenium catalyst, ammonia synthesis, ultrasonic preparation

HUO Chao*;XIA Qinghua;YANG Xiazhen;LUO Yan;LIU Huazhang. Effects of Rare Earth Doping on the Performance of Nano-Ba-Magnesia Supports and Ru-Based Catalysts for Ammonia Synthesis[J]. Chinese Journal of Catalysis, 2009, 30(3): 218-222.

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Effects of Rare Earth Doping on the Performance of Nano-Ba-Magnesia Supports and Ru-Based Catalysts for Ammonia Synthesis

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