Highly dispersed mesoporous Cu/γ-Al2O3 catalyst for RWGS reaction
发布时间：2024-11-29
点击次数：
- 影响因子：
- 7.139
- DOI码：
- 10.1016/j.ijhydene.2022.03.002
- 所属单位：
- 环境与资源学院
- 教研室：
- 化学工程系
- 发表刊物：
- International Journal of Hydrogen Energy
- 项目来源：
- 重庆市教育委员会
- 关键字：
- Cu/g-Al2O3 catalyst；CO2 hydrogenation；Grinding method；Hydrogenation active site；Reverse water gas shift reaction
- 摘要：
- The extensive use of fossil energy leads to the wanton emission of CO2 and serious environmental problems. The resource utilization of CO2 is an effective way to solve this problem. The key of CO2 resource utilization is the design and preparation of high active CO2 hydrogenation catalyst. In this paper, supported Cu/γ-Al2O3 catalysts were prepared by wet impregnation and grinding methods, respectively. The physicochemical properties of the prepared Cu/γ-Al2O3 catalysts were characterized by XRD, BET, CO2-TPD and Quasi in-situ XPS, and the reducibility of the precursors was studied by H2-TPR. The results show that Cu content directly affects the Cu0 species crystallinity and even affects the adsorption and activation of CO2 molecules for the Cu/γ-Al2O3 catalyst. The dispersion of Cu0 species in the prepared Cu/γ-Al2O3 catalysts can be further improved by grinding method. The CO2 reaction rate on the Cu/γ-Al2O3 catalyst prepared by grinding method can be significantly increased to 2.12 × 10−5 mol/gcat/s at 400 °C.
- 第一作者：
- Xin Ai
- 合写作者：
- Hongmei Xie,Shengming Chen,Guizhi Zhang,Benjing Xu
- 论文类型：
- 源刊论文
- 通讯作者：
- Guilin Zhou
- 学科门类：
- 工学
- 文献类型：
- Journal Article
- 卷号：
- 47
- 期号：
- 33
- 页面范围：
- 14884–14895
- 是否译文：
- 否
- 发表时间：
- 2022-04-01
- 收录刊物：
- SCI