| Autor: |
Le Saché, Estelle, Pastor Pérez, Laura, Garcilaso, Victoria, Watson, D. J., Centeno Gallego, Miguel Ángel, Odriozola Gordón, José Antonio, Ramírez Reina, Tomás |
| Přispěvatelé: |
Universidad de Sevilla. Departamento de Química Inorgánica, 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) |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
|
| Popis: |
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. EPSRC grants EP/R512904/1 and EP/P026435/1 Royal Society Research Grant RSGR1180353 Ministerio de Economía, Industria y Competitividad (Project ENE2015- 66975-C3-2-R) co-financed by FEDER funds |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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