甲烷化
催化作用
电催化剂
材料科学
碳纤维
化学工程
氢
选择性
替代天然气
无机化学
化学
合成气
电化学
有机化学
电极
复合材料
物理化学
复合数
工程类
作者
Liliana P. L. Gonçalves,Alexey Serov,Geoffrey McCool,Mikaela Dicome,Juliana P. S. Sousa,O.S.G.P. Soares,Oleksandr Bondarchuk,Dmitri Y. Petrovykh,Oleg I. Lebedev,M.F.R. Pereira,Yury V. Kolen’ko
出处
期刊:Chemcatchem
[Wiley]
日期:2021-10-08
卷期号:13 (22): 4770-4779
被引量:6
标识
DOI:10.1002/cctc.202101284
摘要
Abstract The cost‐effectiveness and excellent performance of conductive‐carbon‐supported Ni‐based electrocatalysts make them attractive materials for hydrogen oxidation and evolution reactions. However, they were previously unused in gas‐phase hydrogenation reactions. In this work, we have expanded the applicability of commercially available advanced Ni/C, NiMo/C and NiRe/C materials from electrocatalysis to heterogeneous catalysis of CO 2 methanation. Our catalytic testing efforts indicate that the monometallic Ni/C material demonstrates the best CO 2 methanation properties, achieving an excellent CO 2 conversion of 83 % at 400 °C with nearly complete selectivity to CH 4 of 99.7 %, plus exhibiting intact performance during 90 h of time‐on‐stream testing. Such catalytic properties are among the highest reported to date among carbon‐supported Ni‐based methanation catalysts. Excellent performance of Ni/C stems from the good dispersion of the Ni nanoparticles over N‐containing carbon support material.
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