LI Guixian*, DONG Peng, WANG Xiaorui, XU Yanduo, WANG Chengjun, LIU Yang

(College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou 730050, China)

Abstract: Liquid-phase catalytic hydrogenation of 1, 4-benzenediol is an environmentally friendly routine for 1, 4-cyclohexanediol production. The key to increasing product yield is to develop catalysts with high catalytic performance. In this work, Ru/HY catalysts were prepared and applied to the hydrogenation of 1, 4-benzenediol to 1, 4-cyclohexanediol. The activity of catalyst was investigated by XRD, TEM. The change of the HY acid content was discussed by Pyridine adsorption infrared. The optimal reaction conditions were investigated. 3.0 wt% Ru/HY catalyst exhibited high activity with conversion of 1, 4-benzenediol and selectivity of 1, 4-cyclohexanediol up to 96.46 % and 68.25 %, respectively. Furthermore, based on the study of Ru/HY’ structure, a plausible reaction mechanism for the selective formation of 1, 4-benzenediol was proposed.

Key words: Ru/HY catalyst; Catalytic hydrogenation; 1, 4-Benzenediol; 1, 4-Cyclohexanediol; Mechanism

E-mail: lgxwyf@163.com 

Journal of Molecular Catalysis, Vol. 26, Issue 1, 2012, 26-31