Highly Selective Ce–Ni–O Catalysts for Efficient Low Temperature Oxidative Dehydrogenation of Propane
Highly Selective Ce–Ni–O Catalysts for Efficient Low Temperature Oxidative Dehydrogenation of Propane
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DOI：
10.1007/s10562-009-9977-z
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发表时间：
2009-05
影响因子：
2.8
通讯作者：
Yongmei Liu;Lu-Cun Wang;Miao Chen;Jie Xu;Yong Cao;Heyong He;Kangnian Fan
中科院分区：
文献类型：
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作者：
Yongmei Liu;Lu-Cun Wang;Miao Chen;Jie Xu;Yong Cao;Heyong He;Kangnian Fan
通过草酸盐凝胶共沉淀法制备的环状结构CeNiO在275 °C的丙烷氧化脱氢反应中表现出比传统催化剂如VMgO更高的活性。结果表明，Ni原子的引入在CeO2晶格中形成的氧空位吸附并活化了分子氧，形成活性氧物种。CeNiO催化剂的丙烷氧化脱氢性能优于CeNiO催化剂的上级原因不仅在于CeNiO催化剂本身的性质，还在于其独特的环状结构。
Doughnut-like structured CeNiO, prepared by a novel oxalate gel co-precipitation method, exhibited significantly higher activity in oxidative dehydrogenation of propane at a temperature as low as 275 °C than conventional catalysts such as VMgO. It is suggested that oxygen vacancy formed in CeO2lattice due to the incorporating of Ni atoms adsorbs and activates the molecular oxygen to form active oxygen species. The superior performance for propane oxidative dehydrogenation over CeNiO catalyst can be attributed not only to the properties of the CeNiO catalyst but also to its unique doughnut-like structure.