CHEN Haoran1, SUN Zijin2, LI Haitao1, ZHENG Xue2, ZHANG Yin1, LIU Wensheng2, WANG Da1, ZHAO Yongxiang1*
(1. Engineering Research Center of Ministry of Education for Fine Chemicals, School of Chemistry and Chemical Engineering, Shanxi University, Taiyuan 030006, China; 2. Shanxi Sanwei Group Co. Ltd., Hongtong 041603, China)
Abstract: Ni/CCA catalysts with different Ni loading were prepared by impregnation method used carbon-covered alumina (CCA) as support. The samples were characterized by N2 physisorption, X-ray diffraction, Ultraviolet-visible diffuse reflectance spectroscopy, H2 temperature-programmed reduction, H2 temperature- programmed desorption. And their catalytic performances were also investigated in the hydrogenation of crude 1,4-butanediol aqueous solution. The results showed that Ni loading less than 10%, NiO existed by amorphous or highly dispersed. When the Ni loading was 14%, trace amount microcrystalline NiO appeared. For the catalysts with Ni loadings higher than 14%, active surface area and catalytic performance increased with increasing Ni loading of the Ni/CCA catalyst. The 17Ni/CCA catalyst showed the excellent catalytic performance.
Key words: Ni2+ ; carbon-covered alumina; dispersion state; 1 4-butanediol; catalytic hydrogenation
E-mail: yxzhao@sxu.edu.cn
Journal of Molecular Catalysis, Vol. 26, Issue 2, 2012, 141-147
