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《JOURNAL OF XIAMEN UNIVERSITY(NATURAL SCIENCE)》 1999-01
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The Effect of Supporters and Ruthenium Contents on the Reaction Activity for Ammonia Synthesis

Wang Lihua 1 Lin Yiji 2 Jiang Jian 2 Chen Hongbo 2 Lin Yinzhong 2 Chen Shouzheng 1 Liao Daiwei 2 ( 1Dept. of Chem., Fujian Normal Univ., Fuzhou 350007; 2Inst. of Phy. Chem., Dept. of Chem. and The State Key Lab. of Phy. Chem. on S  
The effects of different supporters, such as active carbon, γ Al 2O 3、NaX molecular sieve, silica gel, Sm 2O 3, CeO 2, Y 2O 3 and C 60 (6%), and contents (2% ̄6%) of ruthenium on reaction activity of ruthenium based catalysts for ammonia synthesis have been studied. The activity for ammonia synthesis of Ru based catalysts supported by different supporters decreased in the sequence of C 60 Sm 2O 3CeO 2Y 2O 3γ Al 2O 3NaXACsilica gel, and the optimum content of ruthenium is 4 %, under 1×10 5 Pa; the Ru K/C 60 catalyst has the highest activity for ammonia synthesis at 350 ℃. Also, the Ru based catalysts have been characterized by SEM.
【Fund】: 国家自然科学基金 固体表面物理化学国家重点实验室资助
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