甲烷化
催化作用
选择性
材料科学
化学工程
空间速度
蒸馏水
镍
蜂巢
氧化物
无机化学
化学
复合材料
冶金
色谱法
有机化学
工程类
作者
Jeong Yoon Ahn,Soon Woong Chang,Sang Moon Lee,Sung Su Kim,Woo Jin Chung,Jungchul Lee,Yong Joo Cho,Kyung Sook Shin,Dea Hyun Moon,Dinh Duc Nguyen
出处
期刊:Fuel
[Elsevier]
日期:2019-04-08
卷期号:250: 277-284
被引量:46
标识
DOI:10.1016/j.fuel.2019.03.123
摘要
Honeycomb-type structured nickel-based catalysts based on the binary oxides TiO2, Al2O3, Y2O3, and CeO2 as supporters of CO2 methanation were successfully synthesized under various conditions by using different coating solutions and characterized. The prepared catalysts were further tested, and their CO2 methanation activity, stability, and selectivity were compared under different operating conditions at varying temperatures. The results revealed better CO2 methanation with an isopropanol-coated liquid than with distilled water, Si binder, and Ludox. Among the synthesized catalysts, the 10 wt% Ni/CeO2 honeycomb-type catalyst showed the highest CO2 methanation catalytic activity, stability, and selectivity, with a CO2 conversion efficiency of more than 80% during testing at an optimal temperature of 298 °C, space velocity of 743 h−1, and catalyst loading of 134 g/L. The optimum parameters and CO2 conversion efficiency were verified and reconfirmed through response surface analysis. The 10 wt% Ni/CeO2 catalyst is a promising catalyst with excellent potential for application in CO2 methanation.
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