| Effect of Rare Earth Oxides on Catalysts Mo-Te System |
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| 作者姓名： | 贺仁近 江洪波 钟邦克 王祥珍 |
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| 作者单位： | Department of Chemistry Jinan University，Guangzhou 510632，China，Department of Chemistry，Jinan University，Guangzhou 510632，China，Department of Chemistry，Jinan University，Guangzhou 510632，China，South China Sea Institute of Oceanology，Academia Sinica，Guangzhou 510275，China |
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| 基金项目： | the Science Fundation of Guangdong Province |
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| 摘 要： | Surface compositions,structures,and acidities of the Mo-Te-Fe-Ni catalysts added with La_2O_3,CeO_2,Pr_6O_(12),Nd_2O_3 and Sm_2O_3 were measured and related with the activities of the catalysts for selective oxidationof olefins.It was found that adding rare earth elements to the Mo-Te catalysts increases obviously theirselectivities to methacrolein(MAL),and the yield percentage of MAL changes periodically with the increase ofatomic numbers of rare earth elements added,and the highest yield was obtained with the catalyst containingCeO_2.The addition of CeO_2 to 9-component Mo-Te catalyst increases not only the activity of the catalyst,but also its thermostability remarkably.The mechanism of rare earth elements in the catalysts was discussed.
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Effect of Rare Earth Oxides on Catalysts Mo-Te System |
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| He Ren-Jin Jiang Hong-Bo Zhong Bang-Ke.Effect of Rare Earth Oxides on Catalysts Mo-Te System[J].Journal of Rare Earths,1991(2). |
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| Authors: | He Ren-Jin Jiang Hong-Bo Zhong Bang-Ke |
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| Abstract: | Surface compositions,structures,and acidities of the Mo-Te-Fe-Ni catalysts added with La_2O_3,CeO_2, Pr_6O_(12),Nd_2O_3 and Sm_2O_3 were measured and related with the activities of the catalysts for selective oxidation of olefins.It was found that adding rare earth elements to the Mo-Te catalysts increases obviously their selectivities to methacrolein(MAL),and the yield percentage of MAL changes periodically with the increase of atomic numbers of rare earth elements added,and the highest yield was obtained with the catalyst containing CeO_2.The addition of CeO_2 to 9-component Mo-Te catalyst increases not only the activity of the catalyst, but also its thermostability remarkably.The mechanism of rare earth elements in the catalysts was discussed. |
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| Keywords: | Mo-Te catalysts Rare earth oxides Oxidation Isobutene Methacroiein |
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