纯相和镍取代的Co_3O_4尖晶石催化剂用于N_2O直接分解(英文)

作     者：Bahaa M.Abu-Zied Soliman A.Soliman Sarah E.Abdellah 

作者机构：Chemistry DepartmentFaculty of ScienceAssiut University 

出 版 物：《催化学报》 (Chinese Journal of Catalysis)

年 卷 期：2014年第35卷第7期

页      面：1105-1112页

核心收录：

学科分类：081702[工学-化学工艺] 081705[工学-工业催化] 0817[工学-化学工程与技术] 08[工学] 0703[理学-化学] 

主　　题：氧化物催化剂 四氧化三钴 尖晶石型 直接分解 N2O 镍 氧化亚氮 二氧化碳 

摘      要：A series of NixCo1-xCo2O4(0 ≤ x ≤ 1) spinel catalysts were prepared by the co-precipitation method and used for direct N2O decomposition. The decomposition pathway of the parent precipitates was characterized by thermal analysis. The catalysts were calcined at 500 °C for 3 h and characterized by powder X-ray diffraction, Fourier transform infrared, and N2 adsorption-desorption. Nickel cobaltite spinel was formed in the solid state reaction between NiO and Co3O4. The N2O decomposition measurement revealed significant increase in the activity of Co3O4 spinel oxide catalyst with the partial replacement of Co2+ by Ni2+. The activity of this series of catalysts was controlled by the degree of Co2+ substitution by Ni2+, spinel crystallite size, catalyst surface area, presence of residual K+, and calcination temperature.