Effects of Reaction Conditions on Performance of Ru Catalyst and Iron Catalyst for Ammonia Synthesis

›› 2011, Vol. 19 ›› Issue (2): 273-277.

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Effects of Reaction Conditions on Performance of Ru Catalyst and Iron Catalyst for Ammonia Synthesis

PAN Chonggen, LI Ying, JIANG Wen, LIU Huazhang Zhejiang

Key Laboratory of Green-Chemistry Synthesis Technology, Institute of Catalysis, Zhejiang University of Technology, Hangzhou 310014, China

Received:2010-07-28 Revised:2011-01-20 Online:2011-04-28 Published:2011-04-28
Supported by:
Supported by the National Natural Science Foundation of China(20803064);the Natural Science Foundation of Zhejiang Province(Y409034)

Effects of Reaction Conditions on Performance of Ru Catalyst and Iron Catalyst for Ammonia Synthesis

潘崇根, 李瑛, 蒋文, 刘化章

Key Laboratory of Green-Chemistry Synthesis Technology, Institute of Catalysis, Zhejiang University of Technology, Hangzhou 310014, China

通讯作者: LIU Huazhang,E-mail:cuihua@zjut.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China(20803064);the Natural Science Foundation of Zhejiang Province(Y409034)

Abstract

Abstract: Activated carbon-supported Ru-based catalyst and A301 iron catalyst were prepared,and the influences of reaction temperature,space velocity,pressure,and H₂/N₂ ratio on performance of iron catalyst coupled with Ru catalyst in series for ammonia synthesis were investigated.The activity tests were also performed on the single Ru and Fe catalysts as comparison.Results showed that the activity of the Ru catalyst for ammonia synthesis was higher than that of the iron catalyst by 33.5%-37.6% under the reaction conditions:375-400℃,10 MPa,10000 h^-1,H₂:N₂=3,and the Ru catalyst also had better thermal stability when treated at 475℃ for 20 h.The outlet ammonia concentration using Fe-Ru catalyst was increased by 45.6%-63.5% than that of the single-iron catalyst at low temperature (375-400℃),and the outlet ammonia concentration increased with increasing Ru catalyst loading.

Key words: Ru catalyst, iron catalyst, ammonia synthesis, active carbon, reactors in series

摘要： Activated carbon-supported Ru-based catalyst and A301 iron catalyst were prepared,and the influences of reaction temperature,space velocity,pressure,and H₂/N₂ ratio on performance of iron catalyst coupled with Ru catalyst in series for ammonia synthesis were investigated.The activity tests were also performed on the single Ru and Fe catalysts as comparison.Results showed that the activity of the Ru catalyst for ammonia synthesis was higher than that of the iron catalyst by 33.5%-37.6% under the reaction conditions:375-400℃,10 MPa,10000 h^-1,H₂:N₂=3,and the Ru catalyst also had better thermal stability when treated at 475℃ for 20 h.The outlet ammonia concentration using Fe-Ru catalyst was increased by 45.6%-63.5% than that of the single-iron catalyst at low temperature (375-400℃),and the outlet ammonia concentration increased with increasing Ru catalyst loading.

关键词: Ru catalyst, iron catalyst, ammonia synthesis, active carbon, reactors in series

PAN Chonggen, LI Ying, JIANG Wen, LIU Huazhang Zhejiang. Effects of Reaction Conditions on Performance of Ru Catalyst and Iron Catalyst for Ammonia Synthesis[J]. , 2011, 19(2): 273-277.

潘崇根, 李瑛, 蒋文, 刘化章. Effects of Reaction Conditions on Performance of Ru Catalyst and Iron Catalyst for Ammonia Synthesis[J]. , 2011, 19(2): 273-277.

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Effects of Reaction Conditions on Performance of Ru Catalyst and Iron Catalyst for Ammonia Synthesis

Effects of Reaction Conditions on Performance of Ru Catalyst and Iron Catalyst for Ammonia Synthesis

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