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CH₄/H₂O/Ar等离子体反应条件和Cu/SiO₂催化剂的催化性能。结果表明,在最佳反应温度为170℃、最优CH₄/H₂O摩尔比为1∶4、负载量为5%的Cu/SiO₂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 CH₄/H₂O/Ar over plasma and the catalytic performance of Cu/SiO₂ catalyst are investigated.Experimental results show that the optimum reaction temperature is 170℃,and the best CH₄/H₂O 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/SiO₂ catalyst with a loading of 5 wt%.

郝英姿(1997-),女,硕士研究生,研究方向为等离子体催化甲烷转化,1973155715@qq.com