CH_(4)/H_(2)O等离子体催化甲烷水蒸气重整直接制甲醇的研究  

Plasma catalyzed direct synthesis of methanol by steam reforming of methane

作　　者：郝英姿 刘瑞 易颜辉[1] HAO Ying-zi;LIU Rui;YI Yan-hui(State Key Laboratory of Fine Chemicals,School of Chemical Engineering,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]大连理工大学化工学院,精细化工国家重点实验室,辽宁大连116024

出　　处：《现代化工》2022年第10期175-179,184,共6页Modern Chemical Industry

基　　金：中国石油创新基金项目(2108D-5007-0501);中央高校基本科研业务费项目(DUT21JC40)。

摘　　要：两步法甲烷水蒸气重整生产甲醇的高温、高压操作条件导致高能耗和高成本。利用线-筒式介质阻挡放电反应器,通过等离子体与Cu基催化剂耦合实现了甲烷水蒸气重整一步制甲醇,并考察了CH_(4)/H_(2)O/Ar等离子体反应条件和Cu/SiO_(2)催化剂的催化性能。结果表明,在最佳反应温度为170℃、最优CH_(4)/H_(2)O摩尔比为1∶4、负载量为5%的Cu/SiO_(2)为催化剂时,甲烷的转化率达到6.4%,甲醇的选择性达到58.8%。Industrial production of methanol from methane is commonly achieved by a two-step process,which means high energy consumption and high cost.A one-step method for methane steam reforming to methanol is developed by coupling plasma with Cu-based catalyst using a coaxial dielectric barrier discharge reactor.The reaction conditions for CH_(4)/H_(2)O/Ar over plasma and the catalytic performance of Cu/SiO_(2) catalyst are investigated.Experimental results show that the optimum reaction temperature is 170℃,and the best CH_(4)/H_(2)O molar ratio is 1∶4.Under the optimized reaction conditions,the conversion of methane can achieve 6.4%and the selectivity of methanol can reach 58.8%when employing Cu/SiO_(2) catalyst with a loading of 5 wt%.

关 键 词：甲烷转化 水蒸气重整 甲醇 介质阻挡放电等离子体 Cu基催化剂 

分 类 号：O643.3[理学—物理化学]