苯部分加氢制环己烯钌基催化剂研究进展

环己烯是重要的化工原料及中间体,广泛应用于合成纤维及其他工业领域。介绍了苯部分加氢制环己烯的技术路线,该技术路线具有安全环保和节能高效的特点,其中,催化反应体系是该技术的关键要素。重点概述了近年来对液相苯部分加氢催化体系中钌基催化剂的研究,包括催化剂前驱体、催化剂制备方法、载体、助催化剂以及添加剂对催化剂性能和产物选择性等的影响。介绍了已工业化的旭化成和神马集团的苯部分加氢工艺。环己烯的市场前景广阔,苯部分加氢工艺是一条经济效益高的工艺路线,实现催化体系的突破对于该工艺至关重要,但存在催化剂成本高、易失活和环己烯收率低的问题。

Progress in Ru-based catalysts for partial hydrogenation of benzene to cyclohexene

As an important chemical raw material and intermediate,cyclohexene is widely used in synthetic fiber industry and other industrial sectors.A route of partial hydrogenation of benzene to cyclohexene was introduced,which was safe,green,efficient and energy-saving.Catalyst system was the key factor in the route.The research on Ru-based catalysts for liquid-phase partial hydrogenation of benzene in recent years was reviewed,including the influence of precursors,preparation methods,supports,promoters and additives on catalyst activity and the selectivity to the products.The commercial technologies of partial hydrogenation of benzene of Asahi Kasei Corporation and Shenma Group were introduced.The market prospect of cyclohexene is prosperous.The partial hydrogenation process of benzene is a route of high economic benefit.It is crucial for the catalytic technology to make breakthroughs.But there exists the problems of high cost and easy inactivation of catalyst,and low cyclohexene yield.