High efficient CuCeO2-/SiO2 catalyst for RWGS reaction: Impact of Ce content and loading sequence
发布时间：2024-11-19
点击次数：
- 影响因子：
- 2.7
- DOI码：
- 10.1002/ghg.2294
- 所属单位：
- 环境与资源学院
- 教研室：
- 化学工程系
- 发表刊物：
- Greenhouse Gases: Science and Technology
- 项目来源：
- 重庆市自然科学基金面上项目
- 关键字：
- catalytic hydrogenation; CO2, mesoporous CuCeO2-δ/SiO2 catalyst; RWGS reaction; synergy effect
- 摘要：
- The extensive use of fossil energy leads to wanton emission of CO2 and seriousenvironmental problems. The exploration of high-performance catalysts plays a pivotal role in CO2resource utilization. In this paper, CuCeyK catalysts are prepared by wet impregnation method usingordered mesoporous SiO2 as support for the reverse water gas shift (RWGS) reaction. Thephysicochemical properties of the prepared catalysts are characterized by H2-TPR, BET, XRD, Quasiin-situ XPS, H2-TPD, and CO2-TPD techniques. The results demonstrate thatthe Cu0 species can formsynergistic effects with oxygen vacancies (Ov) to enhance the CuCeyK catalytic performance.Additionally, the electronic effects between Ce and Cu not only enhances the adsorption and activationperformances of the catalyst towards CO2 and H2 molecules, but also effectively suppresses the sintering of Cu0 species, thereby enhancing the stability of the corresponding catalyst. It is worthmentioning that the Ce content also directly affects the catalytic performances of the CuCeyK catalyst.The CuCe15K catalyst with a Ce content of 15% displays excellent CO2 hydrogenation performances,and the CO2 conversion and CO selectivity up to 41 % and 100 % at 420 °C, respectively.
- 第一作者：
- Shan Zhao
- 合写作者：
- Le Yang,Shen Yao,Yahong Dai,Shuang Chen,Jia Zeng,Hongmei Xie
- 论文类型：
- 源刊论文
- 通讯作者：
- Aiping Jia,Guilin Zhou
- 学科门类：
- 工学
- 文献类型：
- Journal Article
- 卷号：
- 14
- 期号：
- 4
- 页面范围：
- 636–658
- 是否译文：
- 否
- 发表时间：
- 2024-08-16
- 收录刊物：
- SCI
- 发布期刊链接：
- https://doi.org/10.1002/ghg.2294