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Selective hydrogenation of phenol for cyclohexanone: A review
Journal of Industrial and Engineering Chemistry ( IF 6.1 ) Pub Date : 2021-02-01 , DOI: 10.1016/j.jiec.2020.11.022
Hui Chen , Jinsheng Sun

Abstract Cyclohexanone from phenol attractively meets the requirements of green chemistry, through catalytic selective hydrogenation, the prevalent methodology in rapid progress recently. In this background, pathways under this methodology are reviewed herein, including possible cyclohexanone formation mechanisms proposed in those years, as well as the corresponding catalysts, such as noble metal, non-noble metal and emerging amorphous alloy and heteropoly acids. Among the common catalysts, Pd-based catalysts exhibit excellent performance in both conversion and selectivity. Usually, the conversion and selectivity reached almost 100% after the opportune treatment of the metal and support. Other catalysts such as Pt, Rh, Ni, etc., only perform well in conversion rather than selectivity and the product is mainly cyclohexanol. Amorphous alloys and heteropoly acids, although still relatively rare compared with traditional metal catalysts, are bright in prospects indicated by achievements in this field. The reaction mechanism on some catalysts, indistinct to the community, is still in the way of development to overcome the letdown of catalyst design for higher conversion and selectivity industrially. After horizontal comparison of different catalysts, this article manages to give some advice on possible methods contributing to the design of efficient and inexpensive catalytic systems.

中文翻译:

苯酚选择性加氢制备环己酮:综述

摘要 以苯酚为原料的环己酮通过催化选择性加氢这一近来发展迅速的流行方法,非常符合绿色化学的要求。在此背景下,本文回顾了该方法下的途径,包括那些年提出的可能的环己酮形成机制,以及相应的催化剂,如贵金属、非贵金属和新兴的非晶合金和杂多酸。在常见的催化剂中,钯基催化剂在转化率和选择性方面都表现出优异的性能。通常,在适当处理金属和载体后,转化率和选择性几乎达到 100%。其他催化剂如Pt、Rh、Ni等,仅转化率好,选择性差,产物主要为环己醇。非晶合金和杂多酸虽然与传统的金属催化剂相比还比较少见,但在该领域的成就表明其前景是光明的。一些催化剂的反应机理尚不清楚,但仍处于开发过程中,以克服工业上更高转化率和选择性的催化剂设计。在对不同催化剂进行横向比较后,本文设法就有助于设计高效且廉价的催化系统的可能方法提出了一些建议。仍处于开发过程中,以克服催化剂设计在工业上实现更高转化率和选择性的不足。在对不同催化剂进行横向比较后,本文设法就有助于设计高效且廉价的催化系统的可能方法提出了一些建议。仍处于开发过程中,以克服催化剂设计在工业上实现更高转化率和选择性的不足。在对不同催化剂进行横向比较后,本文设法就有助于设计高效且廉价的催化系统的可能方法提出了一些建议。
更新日期:2021-02-01
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