| 氧化铈的结构对其热稳定性及催化丙烷氧化脱氢反应性能的影响 |
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| 引用本文： | 高旭锋,谌春林,任士远,张建,苏党生.氧化铈的结构对其热稳定性及催化丙烷氧化脱氢反应性能的影响[J].催化学报,2012(7):1069-1074. |
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| 作者姓名： | 高旭锋 谌春林 任士远 张建 苏党生 |
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| 作者单位： | 中国科学院金属研究所沈阳材料科学国家(联合)实验室 |
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| 基金项目： | 国家自然科学基金(50921004,21133010);中国科学院金属研究所引进优秀学者基金(O9NBA111A1)~~ |
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| 摘 要： | 采用湿化学法制备了低维氧化铈的纳米棒和纳米颗粒,通过原位X射线粉末衍射、透射电镜和N2物理吸附等技术研究了氧化铈纳米结构对其热稳定性的影响.结果表明,氧化铈纳米棒的稳定性更高.采用浸渍法制备了氧化铈负载的氧化钒催化剂,并用于丙烷氧化脱氢反应中,发现以氧化铈纳米棒为载体的催化剂表现出更高的丙烯选择性,这可能是由于棒状结构的开放性有利于产物丙烯的直接扩散.
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| 关 键 词： | 氧化铈 纳米结构 热稳定性 丙烷 氧化脱氢 |
Structural Effects of Cerium Oxides on Their Thermal Stability and Catalytic Performance in Propane Oxidation Dehydrogenation |
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| GAO Xufeng, CHEN Chunlin, REN Shiyuan, ZHANG Jiana, SU Dangsheng.Structural Effects of Cerium Oxides on Their Thermal Stability and Catalytic Performance in Propane Oxidation Dehydrogenation[J].Chinese Journal of Catalysis,2012(7):1069-1074. |
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| Authors: | GAO Xufeng CHEN Chunlin REN Shiyuan ZHANG Jiana SU Dangsheng |
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| Institution: | b Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, Liaoning, China |
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| Abstract: | The low-dimensional ceria nanorods and nanoparticles were prepared by wet chemical methods. The structural effect on the thermal stability of CeO2 has been well investigated by in situ X-ray powder diffraction, transmission electron microscopy, and N2 physisorption, revealing a superior stability of CeO2 nanorods. CeO2-supported V2O5 catalysts were prepared by the incipient wetness impregnation method and their catalytic performance in the oxidative dehydrogenation of propane was evaluated. The V2O5/CeO2 nanorods catalysts display an improved selectivity for propene, probably arising from the immediate diffusion of propene product due to the open characteristic of rod-like structure. |
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| Keywords: | cerium oxide nanostructure thermal stability propane oxidation dehydrogenation |
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