Methanol steam reforming over PdZn/ZnAl2O4/Al2O3 in a catalytic membrane reactor: An experimental and modelling study
A catalytic membrane reactor equipped with Pd–Ag metallic membranes and loaded with PdZn/ZnAl2O4/Al2O3 catalytic pellets was tested for the methanol steam reforming reaction (S/C = 1) aimed at producing a pure hydrogen stream for PEM fuel cell feeding. The catalyst was prepared in two steps. First,...
| Autores: | , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2022 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/368591 |
| Acceso en línea: | https://hdl.handle.net/2117/368591 https://dx.doi.org/10.1016/j.ijhydene.2022.01.186 |
| Access Level: | acceso abierto |
| Palabra clave: | Hydrogen CFD model Methanol steam reforming Catalytic membrane reactor Palladium-based catalyst Pd–Ag membranes Hidrogen Àrees temàtiques de la UPC::Energies Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids |
| Sumario: | A catalytic membrane reactor equipped with Pd–Ag metallic membranes and loaded with PdZn/ZnAl2O4/Al2O3 catalytic pellets was tested for the methanol steam reforming reaction (S/C = 1) aimed at producing a pure hydrogen stream for PEM fuel cell feeding. The catalyst was prepared in two steps. First, commercial ¿-Al2O3 pellets were impregnated with ZnCl2 and calcined at 700 °C to obtain a ZnAl2O4 shell, and subsequently impregnated with PdCl2 and reduced at 600 °C to obtain PdZn alloy nanoparticles. The catalyst was tested both in a conventional packed bed reactor and in a catalytic membrane reactor. A 3D CFD non-isothermal model with mass transfer limitations was developed and validated with experimental data. The reactions of methanol steam reforming, reverse water-gas shift and methanation were modeled under different pressure, temperature and feed load values. The model was used to study and simulate the CMR under different operation conditions. |
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