Impact Factor:

8.1

DOI number:

10.1016/j.ijhydene.2024.09.078

Affiliation of Author(s):

环境与资源学院

Teaching and Research Group:

化学工程系

Journal:

International Journal of Hydrogen Energy

Funded by:

重庆市自然科学基金面上项目

Key Words:

Hydrotalcite-like compounds (HTLcs); CoAl composite catalysts; CH4 dry reforming (DRM); Synergistic catalytic effect; Syngas

Abstract:

In this study, CoAlx-LDHhydrotalcite-likewas used as the precursors to preparethe CoAlx-LD composite catalysts for the DRMreaction. The transition metal Co was the main catalytic active centers for the DRM reaction. The layered structure of the hydrotalcite-like CoAlx-LDH precursors promoted thehighly dispersed Co0 active centers to be formed in the CoAlx-LD catalysts. In addition, synergistic effects between active sites, basic sites and oxygen vacancies can promote the DRMcatalytic performances of CoAl composite catalysts. Meanwhile, the Co/Al mole ratio can regulate the active sites, basic sites and oxygen vacancies in the catalysts, thereby affecting its catalytic performances. The CoAl12-LD catalyst with a Co/Al mole ratio of 1/2 exhibited excellent DRM catalytic performances.TheCH4 and CO2 conversions on the prepared CoAl12-LD catalyst achieved 86.8% and 53.4% at atmospheric pressure and 700 °C, respectively. In addition, the catalyst alsoshowed excellent use stability in the DRM reaction.

First Author:

Na Liu

Co-author:

Hongmei Xie,Shuang Chen,Jia Zeng

Indexed by:

源刊论文

Correspondence Author:

Aiping Jia,Guilin Zhou

Discipline:

Engineering

Document Type:

Journal Article

Volume:

87

Page Number:

1023–1034

Translation or Not:

no

Date of Publication:

2024-10-18

Included Journals:

SCI

Links to published journals:

https://doi.org/10.1016/j.ijhydene.2024.09.078