Mg-Al-碱土金属复合氧化物为载体的钌基氨合成催化剂制备及性质研究  

Studies on preparation and property of Ru-based ammonia synthesis catalyst supported on mixed oxide

作　　者：郭伟明[1] 杨振威[2] 林敬东[2] 黄桂玉[1] 廖代伟[2] 

机构地区：[1]厦门大学化学工程与生物工程系,福建厦门351005 [2]厦门大学化学系,福建厦门351005

出　　处：《化学研究与应用》2006年第9期1106-1109,共4页Chemical Research and Application

基　　金：国家自然科学基金资助项目(20273053;20023001和29933040);973项目(001CB108906);福建省自然科学基金资助项目(E0310001)

摘　　要：The Mg,Al,Alkaline-earth mixed oxides were synthesized by co-precipitation of two mixed solutions and then loaded with Ru to get the Ru-based catalyst.X-ray diffraction,CO2-adsorption,N2 physical-adsorption and SEM were introduced to characterize the phase,basicity,area,and configuration of the surface of the mixed oxide.The ammonia synthesis experiment was carried out under the fluxin of 3H2/1N2,with the velocity 2100 mL/h and pressure 0.2 MPa.The activity test shows that the catalyst supported on mixed oxide has far more better activity than those supported on single oxide.It can be concluded from the result of the characterization and activity test that the activity of the catalyst was mainly affected by the basicity of the surface rather than the surface areas.The Mg,Al, Alkaline-earth mixed oxides were synthesized by co-precipitation of two mixed solutions and then loaded with Ru to get the Ru-based catalyst. X-ray diffraction, CO2-adsorption, N2 physical-adsorption and SEM were introduced to characterize the phase, baslcity, area, and configuration of the surface of the mixed oxide. The ammonia synthesis experiment was carded out under the fluxin of 3H2/1N2 ,with the velocity 2100 mL/h and pressure 0.2 MPa. The activity test shows that the catalyst supported on mixed oxide has far more better activity than those supported on single oxide. It can be concluded from the result of the characterization and activity test that the activity of the catalyst was mainly affected by the basicity of the surface rather than the surface areas.

关 键 词：复合氧化物 合成氨 钌 载体 

分 类 号：O643.36[理学—物理化学]