Rate constant ratios in the consecutive chlorination of liquid‐phase
<i>p</i>
‐xylene with Cl
<sub>2</sub>
and an iron(III) chloride catalyst
作者:Fotis P. Rigas
DOI:10.1002/kin.21543
日期:2022.2
p-xylene is an important chemical feedstock for many final products in the market from pesticides, pharmaceuticals, peroxides to dyes, its chlorinated derivatives are of interest in the chemical industry. In this paper, the rate constant ratios of the consecutive chlorination of p-xylene at 70°C in a gas–liquid semibatch reactor using molecular chlorine and iron(III) chloride as a catalyst was investigated
鉴于对二甲苯是市场上许多最终产品的重要化学原料,从农药、药物、过氧化物到染料,其氯化衍生物在化学工业中很受关注。在本文中,使用分子氯和氯化铁 (III) 作为催化剂,在 70°C 气液半间歇反应器中对二甲苯连续氯化的速率常数比进行了研究,直到第四个连续反应(四氯-对二甲苯生产)。这些比率是通过数学表达式和最近在文献中提出的图形方法通过使用连续产品的最大值确定的。找到的一氯的比例p二甲苯(2-氯- p二甲苯),二氯- p二甲苯(2,3-二氯-的总和p二甲苯和2,5-二氯- p二甲苯),三氯p二甲苯(2,3,5-三氯- p -二甲苯)和四氯-对-二甲苯(2,3,5,6-四氯-对-二甲苯)分别为k 2 /k 1 = 0.295、k 3 /k 1 = 0.0826和k 4 /k 1 = 0.00383。物有利于2,5-二氯也确定所产生的dichlo异构体的比率为2.12 p二甲苯,这是合理的,因为2