Impact Factor:

7.139

DOI number:

10.1016/j.ijhydene.2020.02.058

Affiliation of Author(s):

重庆工商大学

Teaching and Research Group:

化学工程系

Journal:

international journal of hydrogen energy

Funded by:

重庆市科技局

Key Words:

Mesoporous Cu/CeO2-d catalyst；Cu0eCeO2-d interface structure；Synergistic effect；RWGS reaction；CO2；CO

Abstract:

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.

First Author:

Guilin Zhou

Co-author:

谢凤琼,DLD,ZGZ,XHM

Indexed by:

源刊论文

Document Code:

982C1YQNBDP7MGG6DJ8IAING5E9UC6V3

Discipline:

Engineering

First-Level Discipline:

Chemical Engineering and Technology

Document Type:

Journal Article

Issue:

45

Page Number:

11380–11393

Translation or Not:

no

Date of Publication:

2020-04-01

Links to published journals:

https://doi.org/10.1016/j.ijhydene.2020.02.058