Impact Factor:

3.309

DOI number:

10.1007/s11814-017-0267-y

Affiliation of Author(s):

重庆工商大学

Teaching and Research Group:

材料科学与工程系

Journal:

Korean Journal of Chemical Engineering

Funded by:

重庆市教育委员会

Key Words:

Cerium Oxide Catalyst；Carbon Dioxide；Carbon Monoxide；Reverse Water-gas Shift (RWGS) Reaction；Oxygen Vacancy

Abstract:

CeO2 catalysts with different structure were prepared by hard-template (Ce-HT), complex (Ce-CA), and precipitation methods (Ce-PC), and their performance in CO2 reverse water gas shift (RWGS) reaction was investigated. The catalysts were characterized using XRD, TEM, BET, H2-TPR, and in-situ XPS. The results indicated that the structure of CeO2 catalysts was significantly affected by the preparation method. The porous structure and large specific surface area enhanced the catalytic activity of the studied CeO2 catalysts. Oxygen vacancies as active sites were formed in the CeO2 catalysts by H2 reduction at 400 °C. The Ce-HT, Ce-CA, and Ce-PC catalysts have a 100% CO selectivity and CO2 conversion at 580 °C was 15.9%, 9.3%, and 12.7%, respectively. The highest CO2 RWGS reactioncatalytic activity for the Ce-HT catalyst was related to the porous structure, large specific surface area (144.9 m2∙g−1)and formed abundant oxygen vacancies.

First Author:

Bican Dai

Co-author:

Shiquan Cao,Hongmei Xie,Shengming Chen

Indexed by:

源刊论文

Correspondence Author:

Guilin Zhou

Discipline:

Engineering

Document Type:

Journal Article

Volume:

35

Issue:

2

Page Number:

421–427

Translation or Not:

no

Date of Publication:

2018-02-01

Included Journals:

SCI

Links to published journals:

https://doi.org/10.1007/s11814-017-0267-y