摘要
苯通过加氢烷基化反应制备环己基苯,再经氧化-分解反应可同时得到苯酚和环己酮2种重要化工原料,是近些年发展起来的生产苯酚和环已酮的新途径;该工艺与传统异丙苯氧化生产苯酚方法相比,副产了高附加值的环己酮,解决了丙酮生产过剩的问题。比较了苯加氢烷基化、环己烯与苯烷基化和联苯选择加氢制备环己基苯3种方法,重点对苯加氢烷基化所涉及的化学反应、催化机理、双功能催化剂、反应工艺及流程的研究进展进行概述。并指出了该技术存在的问题,对其今后的发展提出了建议。
A new process has come up recently for the co-production of phenol and cyclohexanone through three steps： the hydroalkylation of benzene, the peroxidation of cyclohexylbenzene and the decomposition of the resulting hydroperoxide products. Compared with the oxidation of cumene, this process produce cyclohexanone with high added-value and solve the acute problem of acetone over- capacity production. A thorough summarization on the methods of cyclohexylbenzene preparation was reported, including the hydroalkylation of benzene, the Friedel-Crafts alkylation of benzene and cyclohexene, and the selective hydrogenation of biphenyl. Thereinto, the relative chemical reactions, catalytic mechanism, preparation of bi-functional catalysts and process flow for the hydroalkylation of benzene were discussed in detail. Meanwhile, challenges and further development strategies were covered too.
出处
《石油化工》
CAS
CSCD
北大核心
2016年第6期641-647,共7页
Petrochemical Technology
基金
国家自然科学基金项目(2012CB224804)
关键词
苯酚
环己酮
苯
加氢烷基化
环己基苯
双功能催化剂
phenol
cyclohexanone
benzene
hydroalkylation
cyclohexylbenzene
bi-functional catalyst
