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溶胶-凝胶法制备NixCo1-xCoAlO4尖晶石型复合氧化物及其催化分解N2O性能

张海杰 ,  王建 ,  徐秀峰

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引用本文: 张海杰, 王建, 徐秀峰. 溶胶-凝胶法制备NixCo1-xCoAlO4尖晶石型复合氧化物及其催化分解N2O性能[J]. 燃料化学学报, 2015, 43(1): 81-87. shu
Citation:  ZHANG Hai-jie, WANG Jian, XU Xiu-feng. Catalytic decomposition of N2O over NixCo1-xCoAlO4 spinel oxides prepared by sol-gel method[J]. Journal of Fuel Chemistry and Technology, 2015, 43(1): 81-87. shu

溶胶-凝胶法制备NixCo1-xCoAlO4尖晶石型复合氧化物及其催化分解N2O性能

    通讯作者: XU Xiu-feng,E-mail:xxf@ytu.edu.cn
  • 基金项目:

    Supported by the Research Project from Department of Science and Technology of Shandong Province (2012GSF11708). (2012GSF11708)

摘要: 用溶胶凝胶法制备了一组NixCo1-xCoAlO4尖晶石型复合氧化物,并采用表面润湿浸渍K2CO3溶液进行了K掺杂改性,用于有氧气氛下的N2O催化分解反应.采用N2物理吸附、X-射线衍射(XRD)、扫描电镜(SEM)、H2-程序升温还原(H2-TPR)等技术对催化剂进行了表征,考察了催化剂组成、母液pH值、K负载量等制备参数对其催化活性的影响.结果表明,母液pH值为3、K/(Ni+Co)物质的量比为0.1的K/Ni0.15Co0.85CoAlO4催化剂具有较高的N2O分解活性,450 ℃ N2O可完全分解.助剂K的加入弱化了催化剂表面金属氧键,提高了催化剂的还原性、催化活性和抗水性.

English

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  • 收稿日期:  2014-09-18
  • 网络出版日期:  2014-11-05
通讯作者: 陈斌, bchen63@163.com
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