Supported mesoporous Cu/CeO2-δ catalyst for CO2 reverse water–gas shift reaction to syngas
发布时间：2024-08-19
点击次数：
- 影响因子：
- 7.139
- DOI码：
- 10.1016/j.ijhydene.2020.02.058
- 所属单位：
- 重庆工商大学
- 教研室：
- 化学工程系
- 发表刊物：
- international journal of hydrogen energy
- 项目来源：
- 重庆市科技局
- 关键字：
- Mesoporous Cu/CeO2-d catalyst；Cu0eCeO2-d interface structure；Synergistic effect；RWGS reaction；CO2；CO
- 摘要：
- The design and development of a high performance hydrogenation catalyst is an important challenge in the utilization of CO2 as resources. The catalytic performances of the supported catalyst can be effectively improved through the interaction between the active components and the support materials. The obtained results demonstrated that the oxygen vacancies and active Cu0 species as active sites can be formed in the Cu/CeO2-δ catalysts by the H2 reduction at 400 °C. The synergistic effect of the surface oxygen vacancies and active Cu0 species, and Cu0–CeO2-δ interface structure enhanced catalytic activity of the supported xCu/CeO2-δ catalysts. The electronic effect between Cu and Ce species boosted the adsorption and activation performances of the reactant CO2 and H2 molecules on the corresponding Cu/CeO2-δ catalyst. The Cu/CeO2-δ catalyst with the Cu loading of 8.0 wt% exhibited the highest CO2 conversion rate in the RWGS reaction, reaching 1.38 mmol·gcat−1 min−1 at 400 °C. Its excellent catalytic performance in the RWGS reaction was related to the complete synergistic interaction between the active species via Ce3+-□-Cu0 (□: oxygen vacancy). The Cu/CeO2-δ composite material is a superior catalyst for the RWGS reaction because of its high CO2 conversion and 100% CO selectivity.
- 第一作者：
- 周桂林
- 合写作者：
- 谢凤琼,邓理丹,张桂芝,谢红梅
- 论文类型：
- 源刊论文
- 论文编号：
- 982C1YQNBDP7MGG6DJ8IAING5E9UC6V3
- 学科门类：
- 工学
- 一级学科：
- 化学工程与技术
- 文献类型：
- Journal Article
- 期号：
- 45
- 页面范围：
- 11380–11393
- 是否译文：
- 否
- 发表时间：
- 2020-04-01