Solid-state synthesis method for the preparation of cobalt doped Ni-Al2O3 mesoporous catalysts for CO2 methanation

被引：55
作者：
Shafiee, Parisa [1 ]
Alavi, Seyed Mehdi [1 ]
Rezaei, Mehran [1 ]
机构：
[1] Iran Univ Sci & Technol, Catalyst & Nano Mat Res Lab CNMRL, Sch Chem Petr & Gas Engn, Tehran, Iran
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2021年 / 46卷 / 05期
基金：
美国国家科学基金会;
关键词：
Ni-Co/Al2O3; catalyst; CO2; methanation; Bimetallic catalysts; Mechanochemical; Nanocatalyst; NANOCRYSTALLINE GAMMA-AL2O3; ENHANCED ACTIVITY; CARBON-DIOXIDE; NI; SYNGAS; FE; LA; CE;
D O I：
10.1016/j.ijhydene.2020.10.221
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this study, a simple solid-state synthesis method was employed for the preparation of the Ni-Co-Al2O3 catalysts with various Co loadings, and the prepared catalysts were used in CO2 methanation reaction. The results demonstrated that the incorporation of cobalt in nickel-based catalysts enhanced the activity of the catalyst. The results showed that the 15 wt%Ni-12.5 wt%Co-Al2O3 sample with a specific surface area of 129.96 m(2)/g possessed the highest catalytic performance in CO2 methanation (76.2% CO2 conversion and 96.39% CH4 selectivity at 400 degrees C) and this catalyst presented high stability over 10 h time-on-stream. Also, CO methanation was investigated and the results showed a complete CO conversion at 300 degrees C. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：3933 / 3944
页数：12
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