Artículo
Flexible syngas production using a La2Zr2-xNixO7-δ pyrochlore-double perovskite catalyst: Towards a direct route for gas phase CO2 recycling
Autor/es | Le Saché, Estelle
Pastor Pérez, Laura Garcilaso, Victoria Watson, D. J. Centeno Gallego, Miguel Ángel Odriozola Gordón, José Antonio Ramírez Reina, Tomás |
Departamento | Universidad de Sevilla. Departamento de Química Inorgánica |
Fecha de publicación | 2020 |
Fecha de depósito | 2022-09-12 |
Publicado en |
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Resumen | The bi-reforming of methane (BRM) has the advantage of utilising greenhouse gases and producing H2 rich syngas. In this work Ni stabilised in a pyrochlore-double perovskite structure is reported as a viable catalyst for ... The bi-reforming of methane (BRM) has the advantage of utilising greenhouse gases and producing H2 rich syngas. In this work Ni stabilised in a pyrochlore-double perovskite structure is reported as a viable catalyst for both Dry Reforming of Methane (DRM) and BRM. A 10 wt.% Ni-doped La2Zr2O7 pyrochlore catalyst was synthesised, characterised and tested under both reaction conditions and its performance was compared to a supported Ni/La2Zr2O7. In particular the effect of steam addition is investigated revealing that steam increases the H2 content in the syngas but limits reactants conversions. The effect of temperature, space velocity and time on stream was studied under BRM conditions and brought out the performance of the material in terms of activity and stability. No deactivation was observed, in fact the addition of steam helped to mitigate carbon deposition. Small and well dispersed Ni clusters, possibly resulting from the progressive exsolution of Ni from the mixed oxide structure could explain the enhanced performance of the catalyst. |
Agencias financiadoras | Engineering and Physical Sciences Research Council (EPSRC) Royal Society (UK) Ministerio de Economia, Industria y Competitividad (MINECO). España European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) |
Identificador del proyecto | EP/R512904/1
EP/P026435/1 RSGR1180353 ENE2015-66975-C3-2-R |
Cita | Le Saché, E., Pastor Pérez, L., Garcilaso, V., Watson, D.J., Centeno Gallego, M.Á., Odriozola Gordón, J.A. y Ramírez Reina, T. (2020). Flexible syngas production using a La2Zr2-xNixO7-δ pyrochlore-double perovskite catalyst: Towards a direct route for gas phase CO2 recycling. Catalysis Today, 357, 583-589. |
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1-s2.0-S0920586119302482-main.pdf | 1.101Mb | [PDF] | Ver/ | |