摘要
在2 L高压反应釜内,研究了环己烷无催化空气氧化生产环己酮过程中,不同浓度苯对氧化反应吸氧速度、产物组成和环己烷转化率、选择性的影响.结果表明,苯对环己烷氧化没有明显的抑制作用,基本不影响氧化吸氧速率和转化率,但对环己烷氧化的选择性有一定影响.在165℃反应55 min时,苯含量每增加10%,选择性约下降1%,且随着环己烷中苯含量的增加,产物中过氧化物含量下降,酸略有下降而酯有所增加,环己酮和环己醇的含量则基本不变.
In a 2 L autoclave, the influences of different concentrations of benzene in cyclohexane on oxygen-absorbing speed, constituent of products, conversion rate and selectivity were studied in production process of cyclohexanone by autoxidation of cyclohexane without catalyst. The results showed that the concentration of benzene had no obvious effects on oxygenation of cyclohexane and oxygen-absorbing speed, but had some effects on selectivity of oxygenation, under 165 ℃, and 55 min. The selectivity decreased by 1% when the concentration of benzene increased by 10%. With increasing of the concentration of benzene, the concentration of cyclohexyl hydroperoxide and acids in the mixture decreased, whereas situation for ester was reverse. And the concentrations of cyclohexanone and cyclohexanol kept constant.
出处
《武汉工程大学学报》
CAS
2009年第3期16-18,22,共4页
Journal of Wuhan Institute of Technology
基金
武汉工程大学博士启动基金资助
关键词
苯
环己烷
氧化反应
转化率
选择性
benzene
cyclohexane
oxidizing reaction
conversion rate
selectivity
