CoCe composite catalyst for CO2 hydrogenation: Effect of pore structure
发布时间：2024-11-19
点击次数：
- 影响因子：
- 5.6
- DOI码：
- 10.1016/j.joei.2024.101856
- 所属单位：
- 环境与资源学院
- 教研室：
- 化学工程系
- 发表刊物：
- Journal of the Energy Institute
- 项目来源：
- 重庆市自然科学基金面上项目
- 关键字：
- CoCe composite catalyst; Pore structure; Active Co0 species; Synergistic effects; CO2 catalytic hydrogenation
- 摘要：
- In order to realize the dual carbon goals of “carbon peaking” and “carbon neutrality”, the design and development CO2 hydrogenation catalyst with high performances is of great significance. In this study, the CoCe composite catalysts were prepared by different methods and used to CO2 catalytic hydrogenation. The physicochemical properties of the prepared catalysts were characterized by XRD, BET, TEM/HRTEM, and H2-TPD. The characterization results indicated that the studied CoCe composite catalysts with different pore structure can be prepared by different preparation methods. The suitable preparation method can promote Co species to be dissolved into the CeO2 lattice to form Ce-O-Co solid solution, which can promote the corresponding Co species to be reduced by H2 to form active Co0 species. The large specific surface area and developed ordered mesoporous structure of the CoCe-HT catalyst precursor, which was prepared by hard-template method, are conducive to the formation of active Co0 species and activation of H2 to produce reactive H species. The CO2 hydrogenation activity of the studied CoCe composite catalysts follows the following order: CoCe-HT > CoCe-CP > CoCe-CA > CoCe-HY. The CoCe-HT catalyst showed high CO2 hydrogenation conversion of 53.9% and good using stability at 360 °C for 600 min. However, the CoCe-CA prepared by complex method has a poor use stability.
- 第一作者：
- Guilin Zhou
- 合写作者：
- Liying Xie,Fengqiong Xie,Shuang Chen,Jia Zeng,Hongmei Xie
- 论文类型：
- 源刊论文
- 学科门类：
- 工学
- 文献类型：
- Journal Article
- 卷号：
- 117
- 页面范围：
- 101856
- 是否译文：
- 否
- 发表时间：
- 2024-11-19
- 收录刊物：
- SCI