Impact Factor:

2.7

DOI number:

10.1002/ghg.2294

Affiliation of Author(s):

环境与资源学院

Teaching and Research Group:

化学工程系

Journal:

Greenhouse Gases: Science and Technology

Funded by:

重庆市自然科学基金面上项目

Key Words:

catalytic hydrogenation; CO2, mesoporous CuCeO2-δ/SiO2 catalyst; RWGS reaction; synergy effect

Abstract:

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.

First Author:

Shan Zhao

Co-author:

Le Yang,Shen Yao,Yahong Dai,Shuang Chen,Jia Zeng,Hongmei Xie

Indexed by:

源刊论文

Correspondence Author:

Aiping Jia,Guilin Zhou

Discipline:

Engineering

Document Type:

Journal Article

Volume:

14

Issue:

4

Page Number:

636–658

Translation or Not:

no

Date of Publication:

2024-08-16

Included Journals:

SCI

Links to published journals:

https://doi.org/10.1002/ghg.2294