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基于约束非平衡溶剂化理论的对硝基苯胺π-π*光谱移动 (cited: 1)
引用本文:李健,任海生,马建毅,李象远.基于约束非平衡溶剂化理论的对硝基苯胺π-π*光谱移动 (cited: 1)[J].化学物理学报,2014,27(2):233-239.
作者姓名:李健  任海生  马建毅  李象远
作者单位:华中科技大学环境科学与工程学院,武汉430074;华中科技大学环境科学与工程学院,武汉430074;华中科技大学环境科学与工程学院,武汉430074;武汉钢铁(集团)公司,武汉430083;华中科技大学环境科学与工程学院,武汉430074
摘    要:采用共沉淀法制备不同组分类水滑石前驱体Co-M-Al和Co-M-Ce-Al (M=Zn, Ni, Cu)复合氧化物催化剂催化分解N2O. 结果表明,Co-M-Al系列氧化物催化剂的催化活性Co-Ni-Al系列>Co-Zn-Al系列>Co-Cu-Al系列;CeO2添加使得催化剂催化活性进一步提高,N2O分解温度T50和T90均下降80 oC;继续负载碱金属K也使氧化物催化剂催化活性提高,N2O分解温度T50和T90下降约50 oC.

关 键 词:N2O,催化分解,类水滑石,CeO2,碱金属
收稿时间:2013/10/29 0:00:00

N2O Decomposition over K-Ce Promoted Co-M-Al Mixed Oxide Catalysts Prepared from Hydrotalcite-like Precursors
Jian Li,Hai-sheng Ren,Jian-yi Ma and Xiang-yuan Li.N2O Decomposition over K-Ce Promoted Co-M-Al Mixed Oxide Catalysts Prepared from Hydrotalcite-like Precursors[J].Chinese Journal of Chemical Physics,2014,27(2):233-239.
Authors:Jian Li  Hai-sheng Ren  Jian-yi Ma and Xiang-yuan Li
Institution:School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;Wuhan Iron and Steel (Group) Corp., Wuhan 430083, China;School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Abstract:A series of mixed oxide catalysts with different composition of Co-M-Al and Co-M-Ce-Al (M=Zn, Ni, Cu) were prepared by co-precipitation method from hydrotalcite-like com-pounds. The experimental results revealed the catalytic activity of Co-Ni-Al is slightly higher than that of Co-Zn-Al and much higher than that of Co-Cu-Al for direct decomposition of N2O. Moreover, addition of small amounts of CeO2 improved the catalytic activity signif-icantly and made the decomposition temperatures at which the N2O conversion was 50% and 90% (T50 and T50) both decreased 80 oC than those of Co-M-Al catalysts without CeO2 added. Further, potassium-load also promoted the catalytic activity, and the decomposi-tion temperatures of T50 and T90 both decreased approximately 50 oC. It is significant for decomposing N2O from industries and reducing carbon emission from atmosphere.
Keywords:N2O  Catalytic decomposition  Hydrotalcite-like compound  CeO2  Alkali metal
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