醋酸液相氧化燃烧反应动力学  

Oxidation Burning Reaction Kinetics of Acetic Acid in a Liquid Phase Catalytic Process

作　　者：李达仁[1] 靳海波[2] 史高峰[1] 

机构地区：[1]兰州理工大学石油化工学院,甘肃兰州730050 [2]北京石油化工学院化工系,北京102617

出　　处：《过程工程学报》2006年第4期539-543,共5页The Chinese Journal of Process Engineering

基　　金：中国石化股份有限公司科技开发部资助项目(编号:201069)

摘　　要：以醋酸钴、醋酸锰为主催化剂,溴化钾为促进剂,乙酸钾为助催化剂,在半连续搅拌釜式钛材反应器中通过测定尾气中CO2和CO的生成量,对醋酸的液相催化氧化动力学进行了研究.分别考察了空气流量、温度、催化剂总浓度、[Co]/[Mn]比、溴离子浓度、水含量等因素对醋酸燃烧损失速率的影响.实验结果表明,增加催化剂总浓度和[Co]/[Mn]比能明显加快CO2和CO的生成速率常数,提高溴离子浓度和降低反应温度可显著抑制醋酸的燃烧损失,同时根据实验结果得出CO2和CO的反应活化能分别为88.11和127.31kJ/mol.The kinetics of oxidation burning reaction of acetic acid in liquid-phase catalytic processes is studied in a semi-batch stirred titanium reactor by measuring the formation concentrations of CO2 and CO with cobalt acetate and manganese acetate as main catalyst, potassium bromide as promoter, and potassium acetate as assistant catalyst. The effects of air flow, temperature, total catalyst concentration, [Co]/[Mn] ratio, bromide concentration, water content on the catalytic burning loss rate of acetic acid are discussed. The experimental results show that the formation rate constants of CO2 and CO increase remarkably with increasing [Co]/[Mn] ratio and total catalyst concentration. The loss of acetic acid in oxidation processes is restrained by increasing [Br]/[Co] ratio and decreasing the reaction temperature. Meanwhile, the reaction activation energy values of CO2 and CO are obtained as 88.11 and 127.31 kJ/mol respectively.

关 键 词：醋酸 燃烧反应 反应速率常数 动力学 烷基萘 

分 类 号：TQ031.7[化学工程] TQ245.13