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首页> 外文期刊>Journal of industrial and engineering chemistry >Preparation of highly active nickel catalysts supported on mesoporous nanocrystalline γ-Al2O3 for CO2 methanation
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Preparation of highly active nickel catalysts supported on mesoporous nanocrystalline γ-Al2O3 for CO2 methanation

机译:介孔纳米晶γ-Al2O3负载高活性镍催化剂制备CO2甲烷化

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摘要

In this study, a group of Ni catalysts supported on mesoporous nanocrystalline γ-Al2O3 with high surface area and with different Ni contents was prepared and employed in carbon dioxide methanation reaction. The obtained results showed increasing in nickel content from 10 to 25wt.% decreased the specific surface area of catalysts from 177 to 130 m~2/g and increased the nickel crystallite size from 12 to 24 nm. In addition, increasing in nickel content increased the reducibility of catalyst. The catalytic results revealed that the catalyst with 20 wt.% of Ni possessed high activity and stability in CO2 methanation reaction.
机译:本研究制备了一组负载在高表面积,Ni含量不同的介孔纳米晶γ-Al2O3上的Ni催化剂,并将其用于二氧化碳甲烷化反应中。得到的结果表明,镍含量从10wt。%增加到25wt。%,催化剂的比表面积从177降低到130m 2 / g,镍微晶尺寸从12nm增加到24nm。另外,镍含量的增加增加了催化剂的还原性。催化结果表明,具有20wt。%Ni的催化剂在CO 2甲烷化反应中具有高活性和稳定性。

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