甲烷化
纳米孔
催化作用
多孔性
乙二醇
色散(光学)
材料科学
氧化物
纳米结构
化学工程
纳米颗粒
化学
复合材料
冶金
有机化学
纳米技术
工程类
物理
光学
作者
Anastasios I. Tsiotsias,Nikolaos D. Charisiou,Eleana Harkou,Sanaa Hafeez,George Manos,Achilleas Constantinou,Aseel Gamal Suliman Hussien,Aasif A. Dabbawala,Víctor Sebastián,Steven J. Hinder,Mark Baker,Kyriaki Polychronopoulou,Maria A. Goula
标识
DOI:10.1016/j.apcatb.2022.121836
摘要
Ni-based catalysts supported on sol-gel prepared Pr-doped CeO2 with varied porosity and nanostructure were tested for the CO2 methanation reaction. It was found that the use of ethylene glycol in the absence of H2O during a modified Pechini synthesis led to a metal oxide support with larger pore size and volume, which was conducive toward the deposition of medium-sized Ni nanoparticles confined into the nanoporous structure. The high Ni dispersion and availability of surface defects and basic sites acted to greatly improve the catalyst’s activity. CFD simulations were used to theoretically predict the catalytic performance given the reactor geometry, whereas COMSOL and ASPEN software were employed to design the models. Both modelling approaches (CFD and process simulation) showed a good validation with the experimental results and therefore confirm their ability for applications related to the prediction of the CO2 methanation behaviour.
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