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Title: Enhancing CO2 methanation over Ni catalysts supported on sol-gel derived Pr2O3-CeO2: An experimental and theoretical investigation
Authors: Tsiotsias, Anastasios I. 
Charisiou, Nikolaos D. 
Harkou, Eleana 
Hafeez, Sanaa 
Manos, George 
Constantinou, Achilleas 
Hussien, Aseel G.S. 
Dabbawala, Aasif A. 
Sebastian, Victor 
Hinder, Steven J. 
Baker, Mark A. 
Polychronopoulou, Kyriaki 
Goula, Maria A. 
Major Field of Science: Engineering and Technology
Field Category: Materials Engineering
Keywords: CO2 methanation;Sol-gel synthesis;Metal dispersion;CFD modelling;Model validation
Issue Date: 5-Dec-2022
Source: Applied Catalysis B: Environmental, 2022, vol. 318, articl. no. 121836
Volume: 318
Journal: Applied Catalysis B: Environmental 
Abstract: 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.
ISSN: 09263373
DOI: 10.1016/j.apcatb.2022.121836
Rights: © Elsevier
Attribution-NonCommercial-NoDerivatives 4.0 International
Type: Article
Affiliation : University of Western Macedonia 
Cyprus University of Technology 
University College London 
Khalifa University of Science and Technology 
Universidad de Zaragoza 
CIBER - Centro de Investigacion Biomedica en Red 
University of Surrey 
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