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Engineering Ni/SiO₂ catalysts for enhanced CO₂ methanation

Ye, Run-Ping, Liao, Lin, Ramirez Reina, Tomas, Liu, Jiaxu, Chevella, Durgaiah, Jin, Yonggang, Fan, Maohong and Liu, Jian (2021) Engineering Ni/SiO₂ catalysts for enhanced CO₂ methanation Fuel, 285, 119151.

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The CO₂ methanation is an important process in coal-to-gas, power-to-gas and CO₂ removal for spacecraft. Recently, metal-organic framework (MOF) derivatives have been demonstrated as high-performance catalysts for CO₂ upgrading processes. However, due to the high costs and low stability of MOF derivatives, it still remains challenge for the development of alternative synthesis methods avoiding MOF precursors. In this work, we present the sol-gel method for loading Ni-MOF to silica support in two-steps. Upon modifying the procedure, a more simplified one-step sol-gel method has been developed. Furthermore, the obtained Ni/SiO₂ catalyst still exhibits great catalytic performance with a CO₂ conversion of 77.2% and considerable CH4 selectivity of ~100% during a stability test for 52 h under a low temperature of 310 °C and high GHSV of 20,000 mL·g−1·h−1. Therefore, this work provides a ground-breaking direct strategy for loading MOF derived catalysts, and might shed a light on the preparation of highly dispersed Ni/SiO₂ catalyst.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemical and Process Engineering
Authors :
Ye, Run-Ping
Liao, Lin
Ramirez Reina,
Liu, Jiaxu
Chevella, Durgaiah
Jin, Yonggang
Fan, Maohong
Date : 1 February 2021
DOI : 10.1016/j.fuel.2020.119151
Uncontrolled Keywords : CO2 methanation; Methane; Ni-MOF; Porous materials; Sol-gel process
Depositing User : Clive Harris
Date Deposited : 01 Oct 2020 11:19
Last Modified : 01 Oct 2020 11:19

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