Impact Factor:

7.139

DOI number:

10.1016/j.ijhydene.2020.05.260

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:

Co/CeO2-d catalyst；Morphology structure；Oxygen vacancy；CO2 catalytic hydrogenation

Abstract:

The Co/CeO2-δ catalysts with different morphology structure were prepared for CO2 catalytic hydrogenation reaction. The physical and chemical properties of these catalysts were characterized by H2-TPR, XRD, TEM, ICP and H2-TPD. The characterization results indicated that the different morphology structure of CeO2 support obviously influence the exposed crystal plane, and then affect the concentration of oxygen vacancies, the metal-support interaction and the dispersion of Co0 active species on the CeO2 support. In addition, the Co ions can be dissolved into the CeO2 lattice to form Ce–O–Co solid solution, which promotes the formation of Co0 active species, oxygen vacancies, and the Ce3+-□-Co0 structure, thus significantly affects the CO2 hydrogenation performance of Co/CeO2-δ catalysts. The exposed {110} and {100} crystal plane of CoCe140 catalyst with nano-rods structure ensure the excellent CO2 hydrogenation performance, including CO2 conversion is 48.7%, the CH4 and CO selectivity are 91.7% and 8.3%, respectively.

First Author:

Shiyu Xu,Fengqiong Xie

Co-author:

Lidan Deng,Hongmei Xie

Indexed by:

源刊论文

Correspondence Author:

Guilin Zhou

Discipline:

Engineering

Document Type:

Journal Article

Volume:

45

Issue:

51

Page Number:

26938–26952

Translation or Not:

no

Date of Publication:

2020-10-01

Included Journals:

SCI

Links to published journals:

https://doi.org/10.1016/j.ijhydene.2020.05.260