Lanthanum-Promoted Ru/Sepiolite in Ammonia Synthesis
来源期刊：JOURNAL OF RARE EARTHS2005年第3期
论文作者：Le Zhiping Huang Yueyu Wei Kemei Yu Xiujin Lin Jianxin
Key words：lanthanum; sepiolite; ruthenium; ammonia synthesis; rare earths;
Abstract: A new kind of Ru supported on sepiolite catalyst with La as promoter for ammonia synthesis was prepared. The effects of reaction conditions on catalytic activity were discussed. The result shows that La is an effective promoter for sepiolite-supported Ru based catalyst. When the load of Ru is 5% (mass fraction), and the molar ratio of La/Ru is 1.5, under the condition of 10 MPa 450 ℃ 20000 h-1, the ammonia synthesis rate is 38.5 mmol NH3·g-1·h-1.
Le Zhiping1，Huang Yueyu2，Wei Kemei2，Yu Xiujin2，Lin Jianxin2
(1.Department of Chemistry, Nanchang University, Nanchang 330047, China;
2.The National Engineering Research Center of Chemical Fertilizer Catalytic Agent, Fuzhou University, Fuzhou 350002, China)
Abstract:A new kind of Ru supported on sepiolite catalyst with La as promoter for ammonia synthesis was prepared. The effects of reaction conditions on catalytic activity were discussed. The result shows that La is an effective promoter for sepiolite-supported Ru based catalyst. When the load of Ru is 5% (mass fraction), and the molar ratio of La/Ru is 1.5, under the condition of 10 MPa 450 ℃ 20000 h-1, the ammonia synthesis rate is 38.5 mmol NH3·g-1·h-1.
Key words:lanthanum; sepiolite; ruthenium; ammonia synthesis; rare earths;
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