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具有Ru-M(M=Fe,Co,Ni,Mo)双金属活性中心的负载型氨合成催化剂

Supported Catalysts with Ru-M (M=Fe,Co,Ni,Mo) Bimetallic Active Centers for Ammonia Synthesis

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【作者】 杨振威郭伟明林敬东廖代伟

【Author】 YANG Zhenwei~1, GUO Weiming~2, LIN Jingdong~1, LIAO Daiwei~ 1,3,4* (1 Department of Chemistry, Xiamen University, Xiamen 361005, Fujian, China; 2 Department of Chemical Engineering and Bioengineering, Xiamen University, Xiamen 361005, Fujian, China; 3 State Key Laboratory of Physical Chemistry of Solid Surfaces, Xiamen University, Xiamen 361005, Fujian, China; 4 Institute of Physical Chemistry, Xiamen University, Xiamen 361005, Fujian, China)

【机构】 厦门大学化学系厦门大学化学工程与生物工程系厦门大学化学系 福建厦门361005福建厦门361005厦门大学固体表面物理化学国家重点实验室厦门大学物理化学研究所

【摘要】 研究了钾促进的双金属中心Ru-M(M=Fe,Co,Ni,Mo)氨合成催化剂.结果表明,Ru-Co催化剂活性最高,Ru和Co含量均为2%的Ru-Co催化剂具有最好的应用价值,其催化活性与Ru和Co含量均为4%的催化剂相近.此外,还对以镁铝尖晶石、氧化镁和镁铝复合氧化物等不同氧化物为载体的Ru-Co双金属中心催化剂进行了对比研究.结果表明,以高温煅烧制得的氧化镁作载体的催化剂活性最高.

【Abstract】 Supported Ru-M (M=Fe, Co, Ni, Mo) bimetallic active center catalysts with a potassium promoter for the ammonia synthesis were studied. The results show that the activity of the Ru-Co catalyst is the highest, and the activity of Ru-Mo is the lowest. When the Ru loading decreases by half (from 4% to 2%), the Ru-Co catalyst with a Co loading of 2% is the most valuable and exhibits an activity almost the same as the catalyst with 4%Ru and 4%Co. The Ru-Co catalysts with Ru and Co loadings of 2% supported on Mg-Al complex oxide, MgAl2O4 spinel, and MgO were also studied, and the catalyst supported on MgO calcined at 600 ℃ has the highest activity.

【关键词】 双金属活性中心氨合成
【Key words】 bimetallic active centerammonia synthesisrutheniumironcobaltnickelmolybdenium
【基金】 国家自然科学基金(20273053,20023001和29933040);国家重点基础研究发展计划(973计划)(001CB108906);福建省自然科学基金(E0310001)资助项目
  • 【文献出处】 催化学报 ,Chinese Journal of Catalysis , 编辑部邮箱 ,2006年05期
  • 【分类号】TQ113.25
  • 【被引频次】15
  • 【下载频次】305
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