低碳化学与化工2025，Vol.50Issue(11)：21-28,8.DOI:10.12434/j.issn.2097-2547.20250014
蒸氨法合成Cu/ZnO/ZrO2催化剂用于CO2加氢制甲醇性能研究
Study on performances of Cu/ZnO/ZrO2 catalysts synthesized by ammonia evaporation method for CO2 hydrogenation to methanol
陈永波 1王文超 2晋川川 2吴法鹏 2汤驰洲2
作者信息
- 1. 安徽海螺集团有限责任公司,安徽 芜湖 241000
- 2. 安徽海螺产业技术研究院有限公司,安徽 芜湖 241000
- 折叠
摘要
Abstract
To enhance the catalytic activity for CO2 hydrogenation to methanol and improve the atom economy of the synthesis process,Cu/ZnO/ZrO2 catalysts were prepared using the ammonia evaporation method instead of the traditional co-precipitation method,and their performance for CO2 hydrogenation to methanol was investigated.The effects of the synthesis method and ammonia evaporation temperatures on the structures and catalytic performances of catalysts were systematically studied.The phase compositions,crystallite sizes and specific surface areas of the catalysts were characterized by XRD,N2 adsorption/desorption,and UV-Vis spectroscopy.The results show that compared with the catalyst prepared by the co-precipitation method,the catalyst synthesized via ammonia evaporation at 75℃(CuZnZr-75)exhibits a more homogeneous distribution of Cu and Zn.After calcination,the resulting CuO crystallite size is smaller,leading to the formation of more Cu-Zn interfacial active sites.Under reaction conditions of n(H2):n(CO2)=3:1,weight hourly space velocity(WHSV)of 24000 mL/(g·h),pressure of 2 MPa and temperature of 220℃,the catalytic performance was evaluated in a fixed-bed reactor.The results indicate that the ammonia evaporation method facilitates the construction of more highly active catalytic sites.Under optimal condition(CuZnZr-75),the methanol space-time yield per unit catalyst surface area increases from 3.96 mg/(m2·h)for the co-precipitated catalyst to 6.33 mg/(m2·h),and the CO2 conversion rate reaches 6.98%.关键词
Cu/ZnO/ZrO2催化剂/蒸氨法/CO2加氢/甲醇Key words
Cu/ZnO/ZrO2 catalyst/ammonia evaporation method/CO2 hydrogenation/methanol分类
化学化工引用本文复制引用
陈永波,王文超,晋川川,吴法鹏,汤驰洲..蒸氨法合成Cu/ZnO/ZrO2催化剂用于CO2加氢制甲醇性能研究[J].低碳化学与化工,2025,50(11):21-28,8.
