Impact Factor:

6.707

DOI number:

10.1016/j.apsusc.2016.04.180

Affiliation of Author(s):

重庆工商大学

Teaching and Research Group:

材料科学与工程系

Journal:

applied surface science

Key Words:

Carbon dioxide；Catalytic hydrogenation；Methanation；Active Ni species；Oxygen vacancies

Abstract:

CeO2, which was used as support to prepare mesoporous Ni/CeO2 catalyst, was prepared by the hard-template method. The prepared NiO/CeO2 precursor and Ni/CeO2 catalyst were studied by H2–TPR, in-situ XPS, and in-situ FT-IR. The catalytic properties of the prepared Ni/CeO2 catalyst were also investigated by CO2 catalytic hydrogenation methanation. H2–TPR and in-situ XPS results showed that metal Ni species and surface oxygen vacancies could be formed by H2 reduction. In-situ FT-IR and in-situ XPS results indicated that CO2 molecules could be reduced by active metal Ni species and surface oxygen vacancies to generate active CO species and promote CO2 methanation. The Ni/CeO2 catalyst presented the high CO2 methanation activity, and CO2 conversion and CH4 selectivity reached 91.1% and 100% at 340 °C and atmospheric pressure.

First Author:

Guilin Zhou

Co-author:

刘慧冉,崔凯凯,贾爱萍,胡庚申,焦昭杰,张贤明

Indexed by:

源刊论文

Correspondence Author:

周桂林

Document Code:

TYQ5RNDJU2T46P1SVCX1M569U6JA2DUL

Discipline:

Engineering

Document Type:

Journal Article

Issue:

383

Page Number:

248–252

Translation or Not:

no

Date of Publication:

2016-10-01

Links to published journals:

https://doi.org/10.1016/j.apsusc.2016.04.180