天然气化工2018，Vol.43Issue(1)：23-28,6.
CO2加氢合成清洁能源DME催化剂的研究
Study on catalysts for synthesis of clean fuel DME by CO2hydrogenation
摘要
Abstract
CuO-ZnO-ZrO2/HZSM-5 bifunctional catalysts for synthesis of dimethyl ether (DME) by CO2hydrogenation were prepared by homogeneous coprecipitation with urea as precipitant and characterized by XRD,BET,H2-TPR,NH3-TPD and SEM.The effect of urea dosage on the structure and catalytic performance of the catalysts was investigated. The results showed that the proper amount of precipitant increased the specific surface area of the catalyst, improved the reducibility of the catalyst, made the surface acidity of the catalyst more suitable, and provided the catalyst with smaller CuO grains, thereby effectively increasing the catalytic activity of the catalyst.Under the reaction conditions of pressure of 3.0 MPa,temperature of 260℃ and space velocity of 1500h-1,the best catalytic effect is achieved over the catalyst prepared by using 4 times stoichiometric amount of urea,and the conversion of CO2 and the selectivity and yield of DME were 20.9%,50.5% and 10.6%,respectively.关键词
二甲醚/二氧化碳/加氢/CuO-ZnO-ZrO2/HZSM-5催化剂Key words
dimethyl ether/carbon dioxide/hydrogenation/CuO-ZnO-ZrO2/HZSM-5 catalyst分类
化学化工引用本文复制引用
杜杰,张雅静,李德豹,王康军,李春艳,吴静..CO2加氢合成清洁能源DME催化剂的研究[J].天然气化工,2018,43(1):23-28,6.基金项目
国家自然科学基金项目(No. 51301114,21203125) （No. 51301114,21203125）
辽宁省自然科学基金(201602598,2015020649) （201602598,2015020649）
辽宁省高等学校优秀人才支持计划项目LNET(LJQ2013044) （LJQ2013044）
