摘要
研究煤矿瓦斯直接催化氧化制甲醇反应机理是瓦斯醇化利用的关键科学问题。本文综述了瓦斯液相催化氧化、等离子体催化氧化、光催化氧化制甲醇反应机理。结果表明,在金属-发烟硫酸体系中瓦斯催化氧化制甲醇机理为亲电取代反应;在金属-醋酸体系中瓦斯催化氧化制甲醇遵循亲电取代和活性氧物种氧化两种反应协同作用机理;瓦斯等离子体催化氧化制甲醇反应遵循自由基反应机理;瓦斯光催化氧化制甲醇反应遵循光生电子、空穴活化机理。指出通过化学动力学模型、多物理场仿真等方式进行模拟计算,结合反应中间体原位探测是今后深入研究瓦斯直接催化氧化制甲醇反应机理的重点。
Studying the reaction mechanism of direct catalytic oxidation of coal mine gas to methanol is a key scientific issue in the utilization of gas alcoholization.The reaction mechanisms for preparing methanol from gas through liquid-phase catalytic oxidation,plasma catalytic oxidation and photocatalytic oxidation are reviewed.The results showed that catalytic oxidation of gas to methanol in the metalfuming sulfuric acid system is an electrophilic substitution reaction and that catalytic oxidation of gas to methanol is the result of the interaction of electrophilic substitution and oxidation of reactive oxygen species.The catalytic oxidation of gas to methanol through plasma follows the free radical reaction mechanism.The photocatalytic oxidation of gas to methanol reaction follows the mechanism of photoelectron generation and hole activation.It is pointed out that conducting simulation calculations through methods such as chemical kinetics models and multi-physical field simulations,combined with in-situ detection of reaction intermediates,is the key point for in-depth research on the reaction mechanism of direct catalytic oxidation of gas to methanol in the future.
作者
徐锋
吴启航
朱丽华
Xu Feng;Wu Qihang;Zhu Lihua(School of Safety Engineering,Heilongjiang University of Science and Technology,Harbin 150022,China;Northeast Regional Joint Laboratory of Mine Intelligent Ventilation and Gas Control for Coal Industry,Harbin 150022,China)
出处
《煤炭技术》
2026年第2期1-6,共6页
Coal Technology
基金
国家自然科学基金项目(51374098,51874126)
黑龙江省自然科学基金项目(E2018053)。
关键词
煤矿瓦斯
甲醇
反应机理
直接
催化氧化
coal mine gas
methanol
reaction mechanism
direct
catalytic oxidation
