Effect of Rare Earth Oxides on Catalysts Mo-Te System
来源期刊：Journal of Rare Earths1991年第2期
论文作者：贺仁近 江洪波 钟邦克 王祥珍
文章页码：116 - 120
摘 要：<正> Surface compositions,structures,and acidities of the Mo-Te-Fe-Ni catalysts added with La2O3,CeO2,Pr6O12,Nd2O3 and Sm2O3 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 containingCeO2.The addition of CeO2 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.
贺仁近，江洪波，钟邦克，王祥珍
摘 要：<正> Surface compositions,structures,and acidities of the Mo-Te-Fe-Ni catalysts added with La2O3,CeO2,Pr6O12,Nd2O3 and Sm2O3 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 containingCeO2.The addition of CeO2 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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