Multiple-metal (Ni-Cu-Mn-K/gamma-Al2O3) catalysts for high-temperature water gas shift reaction: Preparation by equi-volumetic impregnation and characterization

作者：Ye Bing Huo; Jiang Li Long; Wei Ke Mei; Lin Cheng^*

来源：Chinese Journal of Inorganic Chemistry, 2007, 23(8): 1358-1364.

• WGSR
• Ni-Cu-Mn-K/gamma-Al2O3
• equi-volumetic impregnation
• catalystic characterization

Using gamma-Al2O3 as a support, a multiple-metal (Ni-Cu-Mn-K/gamma-Al2O3) catalyst for high-temperature water gas shift reaction was prepared by the two-step Impregnation method. The physical-chemical properties of the catalyst were studied by means of Low temperature nitrogen adsorption-desorption, XRD, DTA and H-2-TPR. It is demonstrated that the catalyst has larger specific surface areas with middle pore structure and that Cu, NI, Ni-Cu-O, xCuO center dot yMnO(2) and xNiO center dot yMnO(2) etc are the active species at low temperature, while at high temperature, the active species are probably complex oxides like xCuO center dot yMnO(2) and xNiO center dot yMnO(2) etc., which improve thermal stability of the catalyst and eliminate the deactivation problem of Cu and Ni due to the sintering at high temperature.

• 出版日期2007-8
• 单位福州大学