Impact Factor:

7.139

DOI number:

10.1016/j.ijhydene.2022.03.002

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:

重庆市教育委员会

Key Words:

Cu/g-Al2O3 catalyst；CO2 hydrogenation；Grinding method；Hydrogenation active site；Reverse water gas shift reaction

Abstract:

The extensive use of fossil energy leads to the wanton emission of CO2 and serious environmental problems. The resource utilization of CO2 is an effective way to solve this problem. The key of CO2 resource utilization is the design and preparation of high active CO2 hydrogenation catalyst. In this paper, supported Cu/γ-Al2O3 catalysts were prepared by wet impregnation and grinding methods, respectively. The physicochemical properties of the prepared Cu/γ-Al2O3 catalysts were characterized by XRD, BET, CO2-TPD and Quasi in-situ XPS, and the reducibility of the precursors was studied by H2-TPR. The results show that Cu content directly affects the Cu0 species crystallinity and even affects the adsorption and activation of CO2 molecules for the Cu/γ-Al2O3 catalyst. The dispersion of Cu0 species in the prepared Cu/γ-Al2O3 catalysts can be further improved by grinding method. The CO2 reaction rate on the Cu/γ-Al2O3 catalyst prepared by grinding method can be significantly increased to 2.12 × 10−5 mol/gcat/s at 400 °C.

First Author:

Xin Ai

Co-author:

Hongmei Xie,Shengming Chen,Guizhi Zhang,Benjing Xu

Indexed by:

源刊论文

Correspondence Author:

Guilin Zhou

Discipline:

Engineering

Document Type:

Journal Article

Volume:

47

Issue:

33

Page Number:

14884–14895

Translation or Not:

no

Date of Publication:

2022-04-01

Included Journals:

SCI

Links to published journals:

https://doi.org/10.1016/j.ijhydene.2022.03.002