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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Rodríguez, Pedro
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Publications (2/2 displayed)
- 2020Síntesis de perovskitas basadas en Ni y Fe vía SCS con radiación microondas y su empleo en el reformado seco de metano Synthesis of perovskites based on Ni and Fe from SCS with microwave radiation and its use in dry methane reforming
- 2018Síntesis de Perovskitas A`1-yA``yB`1-xB``xO3 (A= La, Ca, Sr y B=Ni, Co) preparadas por el método de combustión en solución, vía radiación microondas Synthesis of Perovskites A`1-yA``yB`1-xB``xO3 (A= La, Ca, Sr and B= Ni, Co) prepared by the combustion method in solution, via microwave radiation
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document
Síntesis de perovskitas basadas en Ni y Fe vía SCS con radiación microondas y su empleo en el reformado seco de metano Synthesis of perovskites based on Ni and Fe from SCS with microwave radiation and its use in dry methane reforming
Abstract
Se sintetizaron oxidos mixtos tipo perovskitas La0,7Sr0,3Ni1-xFexO3 (x = 1.0- 0.7- 0.5- 0.3- 0.0), a partir del metodo de combustion en solucion, SCS, en presencia de glicina y con radiacion microonda. Estos materiales se caracterizaron a partir de 1) analisis estructurales empleando la difraccion de rayos X, DRX y la espectroscopia infrarroja con transformada de Fourier, FTIR y 2) analisis texturales por fisisorcion de nitrogeno (metodo B.E.T.) para la elaboracion de las isotermas de adsorcion. La DRX en polvo confirmo la presencia de una fase cristalina mayoritaria (perovskita bimetalica ortorrombica) y, ademas, que el tamano de los dominios cristalinos en estas perovskitas esta por debajo de los 100 nm. Las isotermas obtenidas presentan la forma tipo II y un ciclo de histeresis tipo H3. El test catalitico mostro que las conversiones de metano aumentan con la temperatura y con el contenido de niquel en la estructura del material, debido a un efecto sinergetico entre los metales en la estructura de la perovskita. El solido con el mejor performance para el RSM fue el solido P/NiFe-3, quien presento un 89.16 % de conversion CH4 y un 89.84 % de selectividad hacia syngas a 700°C. Perovskite-type mixed oxides La0.7Sr0.3Ni1-xFexO3 (x = 1.0- 0.7-0.5-0.3-0.0) were synthesized, from the combustion method in solution, SCS, in the presence of glycine and with microwave radiation. These materials were characterized from 1) structural analyzes using X-ray diffraction, DRX and infrared spectroscopy with Fourier transform, FTIR and 2) textural analyzes by nitrogen fisisorption (BET method) for the preparation of adsorption isotherms . The powdered DRX confirmed the presence of a majority crystalline phase (orthorhombic bimetallic perovskite) and, in addition that the size of the crystalline domains in these perovskites is below 100 nm. The isotherms obtained have the type II form and a hysteresis cycle type H3. The catalytic test showed that conversions of methane increase with temperature and with the nickel content in the structure of the material, due to a synergistic effect between the metals in the perovskite structure. The solid with the best performance for the RSM was the solid P/NiFe-3, which presented 89.16 % CH4 conversion and 89.84 % selectivity towards syngas at 700 °C.