Impact Factor:

7.139

DOI number:

10.1016/j.ijhydene.2013.05.130

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:

重庆工商大学

Key Words:

Ordered mesoporous；Co-based catalyst；Carbon dioxide；Methanation；Catalytic hydrogenation

Abstract:

Mesoporous Co/KIT-6 and Co/meso-SiO2 catalysts were prepared via hydrogen reduction and were subsequently used in CO2 catalytic hydrogenation to produce methane. The properties of these catalysts were investigated via low-angle X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET) analysis, and transmission electron microscopy (TEM). The results indicate that the synthesized Co/KIT-6 and Co/meso-SiO2 catalysts have mesoporous structures with well-dispersed Co species, as well as high CO2 catalytic hydrogenation activities. The Co/KIT-6 catalyst has a large specific surface area (368.9 m2 g−1) and a highly ordered bicontinuous mesoporous structure. This catalyst exhibits excellent CO2 catalytic hydrogenation activity and methane product selectivity, which are both higher than those of the Co/meso-SiO2 catalyst at high reaction temperatures. The CO2 conversion and methane selectivity of the Co/KIT-6 catalyst at 280 °C are 48.9% and 100%, respectively. The high dispersion of the Co species and the large specific surface area of the prepared Co-based catalysts contribute to the high catalytic activities. In addition, the highly ordered, bicontinuous, mesoporous structure of the Co/KIT-6 catalyst improves the selectivity for the methane product.

First Author:

Guilin Zhou

Co-author:

吴甜,XHM,郑旭煦

Indexed by:

源刊论文

Correspondence Author:

周桂林

Document Code:

UI8ETMSRBTYSITROCBOGJLPWBR4TUPS9

Discipline:

Engineering

First-Level Discipline:

Chemical Engineering and Technology

Document Type:

Journal Article

Volume:

38

Issue:

24

Page Number:

10012–10018

Translation or Not:

no

Date of Publication:

2013-08-01

Links to published journals:

https://doi.org/10.1016/j.ijhydene.2013.05.130