Tsiotsias, AI;
Charisiou, ND;
Harkou, E;
Hafeez, S;
Manos, G;
Constantinou, A;
Hussien, AGS;
... Goula, MA; + view all
(2022)
Enhancing CO2 methanation over Ni catalysts supported on sol-gel derived Pr2O3-CeO2: An experimental and theoretical investigation.
Applied Catalysis B: Environmental
, 318
, Article 121836. 10.1016/j.apcatb.2022.121836.
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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.
| Type: | Article |
|---|---|
| Title: | Enhancing CO2 methanation over Ni catalysts supported on sol-gel derived Pr2O3-CeO2: An experimental and theoretical investigation |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.apcatb.2022.121836 |
| Publisher version: | https://doi.org/10.1016/j.apcatb.2022.121836 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | CO2 methanation, Sol-gel synthesis, Metal dispersion, CFD modelling, Model validation |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10155768 |
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