ZHENG Yan1, SUN Zijin2, WANG Yongzhao1, LI Haitao1, WANG Shaoan1, LUO Min1, ZHAO Jilong2, 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; 3. )
Abstract: CuO-Bi2O3/SiO2-MgO catalysts were prepared by impregnation, deposition precipitation and co-precipitation methods for the ethynylation of formaldehyde to 1,4-butynediol. The obtained catalysts were characterized by N2 physisorption, TEM, XRD, H2-TPR, and FT-IR. It was found that there were obvious differences in reaction performance due to different reduction property and dispersion of CuO among the catalysts prepared by different methods. The CuO-Bi2O3/SiO2-MgO catalyst prepared by co-precipitation methods have better reduction property and higher CuO dispersion. So CuO can be easily transformed to the alkyne copper complex in the process of activiation and the catalysts show the best catalytic acitivity and selectivity.
Key words: Ethynylation; CuO-Bi2O3 Catalyst; SiO2-MgO Complex; 1 4-Butynediol
E-mail: yxzhao@sxu.edu.cn
Journal of Molecular Catalysis, Vol. 26, Issue 3, 2012,233-238
