苯部分加氢制环己烯的钌系催化剂研究新进展

New Advances in Study on Ruthenium Catalysts for Hydrogenation of Benzene to Cyclohexene

评述了催化剂的制备条件、助催化剂的选择、添加剂的筛选等因素对催化剂活性的影响，指出添加无机盐和水有利于提高环己烯的选择性．讨论了反应温度、搅拌速度、氢气压力的影响，相应的最适宜条件范围为：温度３６０ ～４６０ Ｋ，压力４ ．０ ～５ ．０ ＭＰａ，搅拌转速１５００ ｒ／ｍｉｎ．探讨了苯部分加氢制环己烯的反应机理及加氢初始动力学方程，并对沉淀钌黑催化剂活性进行评价，在温度４１３ Ｋ，压力５．０ ＭＰａ下，苯的转化率为９６ ．４７ ％ ，环己烯的选择性达５０ ．０１％ ，其催化活性及选择性可满足工业化的要求．

This paper revised the influences of prepared conditions and agency of the catalyst to the catalytic activity.The effects of the temperature,the stirrde speed and the hydronen pressure on the reaction rate have been discussed,the optimum conditions are:the temperature 360～460 K,the pressure 4.0～5.0 MPa,the stirred speed 1500 r/min.The mechanism of partial hydrogenation of benzene were studied and given the kinetics equation,and the catalyst activity experimint have been taken under the pressure of 5.0 MPa and temperature 413 K condition,the conversation of benzene reached 96.74%,and the selectivity of cyclohexene 50.01%,which can satisfy the demands of commercial to the catalyst.