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A comprehensive and updated review of studies on the oxidation of cyclohexane to produce ketone-alcohol (KA) oil
Reviews in Chemical Engineering ( IF 4.9 ) Pub Date : 2021-04-10 , DOI: 10.1515/revce-2020-0059
Ahmed Abutaleb 1 , Mohammad Ashraf Ali 1
Affiliation  

Oxidation of cyclohexane is an essential chemical reaction for the industrial manufacture of cyclohexanol and cyclohexanone. These two compounds, together known as ketone–alcohol (KA) oil, are the main feedstock for nylon 6 and nylon 6,6 productions. Several types of catalysts and reaction conditions have been used for cyclohexane oxidation. This paper presents a thorough literature review of catalytic materials used for cyclohexane oxidation to produce KA oil using oxygen, air and other oxidizing agents as well as utilizing different solvents. This review covers research and development reported over the years 2014–2020. This review aims to comprehend the type of catalysts, solvents, oxidants and other reaction parameters used for the oxidation of cyclohexane. Three types of cyclohexane oxidation processes namely thermocatalytic, photocatalytic and microwave-assisted catalytic have been reported. The results of the review showed that metal and metal oxide loaded silica catalysts performed excellently and provided high selectivity of KA oil and cyclohexane conversion. The use of peroxides is not feasible due to their high price compared to air and oxygen. Gold nanoparticles supported on silica performed with high selectivity and good conversion. The use of hydrochloric acid as an additive was found very effective to enhance the photocatalytic oxidation of cyclohexane. Water on the catalyst surface enhanced the reactivity of the photocatalysts since it helps in the generation of hydroxyl radicals.

中文翻译:

环己烷氧化生产酮醇 (KA) 油研究的全面更新综述

环己烷的氧化是环己醇和环己酮工业生产中必不可少的化学反应。这两种化合物统称为酮醇 (KA) 油,是尼龙 6 和尼龙 6,6 生产的主要原料。几种类型的催化剂和反应条件已用于环己烷氧化。本文对用于环己烷氧化生产 KA 油的催化材料进行了全面的文献综述,该催化材料使用氧气、空气和其他氧化剂以及使用不同的溶剂。本综述涵盖 2014-2020 年报告的研究和开发。本综述旨在了解用于环己烷氧化的催化剂、溶剂、氧化剂和其他反应参数的类型。三种类型的环己烷氧化过程,即热催化、已经报道了光催化和微波辅助催化。审查结果表明,负载金属和金属氧化物的二氧化硅催化剂表现出色,并提供高选择性的 KA 油和环己烷转化。与空气和氧气相比,过氧化物的价格较高,因此不可行。负载在二氧化硅上的金纳米颗粒具有高选择性和良好的转化率。发现使用盐酸作为添加剂对增强环己烷的光催化氧化非常有效。催化剂表面的水增强了光催化剂的反应性,因为它有助于产生羟基自由基。审查结果表明,负载金属和金属氧化物的二氧化硅催化剂表现出色,并提供高选择性的 KA 油和环己烷转化。与空气和氧气相比,过氧化物的价格较高,因此不可行。负载在二氧化硅上的金纳米颗粒具有高选择性和良好的转化率。发现使用盐酸作为添加剂对增强环己烷的光催化氧化非常有效。催化剂表面的水增强了光催化剂的反应性,因为它有助于产生羟基自由基。审查结果表明,负载金属和金属氧化物的二氧化硅催化剂表现出色,并提供高选择性的 KA 油和环己烷转化。与空气和氧气相比,过氧化物的价格较高,因此不可行。负载在二氧化硅上的金纳米颗粒具有高选择性和良好的转化率。发现使用盐酸作为添加剂对增强环己烷的光催化氧化非常有效。催化剂表面的水增强了光催化剂的反应性,因为它有助于产生羟基自由基。发现使用盐酸作为添加剂对增强环己烷的光催化氧化非常有效。催化剂表面的水增强了光催化剂的反应性,因为它有助于产生羟基自由基。发现使用盐酸作为添加剂对增强环己烷的光催化氧化非常有效。催化剂表面的水增强了光催化剂的反应性,因为它有助于产生羟基自由基。
更新日期:2021-04-10
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