Chinese Journal of Catalysis ›› 2014, Vol. 35 ›› Issue (5): 733-740.DOI: 10.1016/S1872-2067(14)60077-2

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Selective hydrogenation of D-glucose to D-sorbitol over Ru/ZSM-5 catalysts

Xingcui Guoa, Xicheng Wanga, Jing Guana, Xiufang Chena, Zhangfeng Qinb, Xindong Mua, Mo Xiana   

  1. a Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, Shandong, China;
    b State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, Shanxi, China
  • Received:2014-01-20 Revised:2014-03-13 Online:2014-04-18 Published:2014-04-24
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21273260, 21303238, and 21201174), the Shandong Provincial Natural Science Foundation for Distinguished Young Scholar, China (JQ201305), and the Foundation of State Key Laboratory of Coal Conversion (J13-14-603).

Abstract:

Ru particles were introduced into the zeolite ZSM-5 (MFI) by either a conventional impregnation method or a one-step template-free process. The resultant materials were characterized by X-ray diffraction, N2 adsorption-desorption, scanning electron microscopy, transmission electron microscopy, NH3 and CO2 temperature-programmed desorption. The results indicated that the Ru species in ZSM-5 catalysts prepared via the latter approach (designated as Ru/ZSM-5-TF) were highly dispersed in the ZSM-5 framework structure and this material exhibited high catalytic performance during the hydrogenation of D-glucose to D-sorbitol. The conversion of D-glucose was as high as 99.6% with D-sorbitol selectivity reaching 99.2%, exceeding the performance of Ru/ZSM-5 catalysts prepared by the conventional impregnation method with microporous or desilicated ZSM-5 supports. More importantly, this catalyst showed high stability against leaching and poisoning and could be reused several times. The extensive dispersion of the Ru species, strong interaction between the Ru species and the ZSM-5, and the suitable surface acidity-basicity balance of the Ru/ZSM-5-TF were all critical factors leading to excellent catalytic behavior and stability.

Key words: Hydrogenation, D-glucose, D-sorbitol, Ruthenium, ZSM-5