Preparation of Cu/Co/M (M=Al, Fe, Cr, NiFe) mixed metal oxides and their catalytic activity on selective catalytic reduction of NOx by hydrocarbon

2018 5th International Conference on Advanced Engineering and Technology

工业技术（总论）

Liu, H.^1 ; Huang, Z.^1^2

School of Chemical Engineering and Materials Science, Beijing Institute of Technology, Zhuhai

519088, China^1

Zhuhai Jinggong Detection Technology Limited Company, Zhuhai

519088, China^2

关键词: Hydrotalcite structure;    Layered double hydroxides;    Mixed metal oxide;    Selective catalytic reduction of NOx;    Specific areas;    Spinel structure;    Structure and morphology;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/507/1/012034/pdf
DOI  :  10.1088/1757-899X/507/1/012034

学科分类：工业工程学

来源: IOP

【 摘 要 】

Cu/Co/M (M=Al, Fe, Cr, NiFe) mixed metal oxides (Cu/Co/M-MMOs) were prepared by calcination of Cu/Co/M layered double hydroxide (Cu/Co/M-LDHs) precursors. Their composition, thermal stability, structure and morphology were characterized by ICP, TGA, XRD, IR, BET and SEM, respectively. The results indicated that all precursor samples show good hydrotalcite structure with carbonate inside the layer, and the carbonate is removed by calcination at 773 K. While the mixed metal oxides have spinel structure with specific areas of 20-110 m2 g-1. Cu/Co/M-MMOs have hexagon structure with particle size in the range of 50-100 nm. The order of catalytic activities of Cu/Co/M-MMOs on selective catalytic reduction of NOx is: Cu/Co-MMOs>Cu/Co/Ni/Fe-MMOs>Cu/Co/Fe-MMOs>Cu/Co/AlMMOs∼Cu/Co/Cr-MMOs.