催化学报

催化学报 ›› 2006, Vol. 27 ›› Issue (5): 378-380.

• 研究快讯 • 上一篇    下一篇

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

杨振威1,郭伟明2,林敬东1,廖代伟1,3,4*   

  1. 1 厦门大学化学系, 福建厦门 361005; 2 厦门大学化学工程与生物工程系, 福建厦门 361005; 3 厦门大学固体表面物理化学国家重点实验室, 福建厦门 361005; 4 厦门大学物理化学研究所, 福建厦门 361005
  • 收稿日期:2006-05-25 出版日期:2006-05-25 发布日期:2006-05-25

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

YANG Zhenwei1, GUO Weiming2, LIN Jingdong1, LIAO Daiwei1,3,4*   

  1. 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
  • Received:2006-05-25 Online:2006-05-25 Published:2006-05-25

PDF

667

被引次数

14

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.

关键词: 双金属活性中心, 氨合成, 钌, 铁, 钴, 镍, 钼

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.

Key words: bimetallic active center, ammonia synthesis, ruthenium, iron, cobalt, nickel, molybdenium