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Oxidative dehydrogenation of propane with cobalt, tungsten and molybdenum based materials/Deshidrogenacion oxidativa de propano con materiales a base de cobalto, tungsteno y molibdeno

Oxidative dehydrogenation of propane is a reliable alternative for olefins production. This paper presents the results obtained on oxidative dehydrogenation of propane by using two materials based on cobalt, tungsten, and molybdenum. The materials were characterized by X-ray diffraction (XRD), Fouri...

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Bibliographic Details
Published in:Revista Facultad de IngenierĂ­a 2017-09 (84), p.97
Main Authors: Salamanca-Guzman, Maurin, Licea-Fonseca, Yordy Enrique, Echavarria-Isaza, Adriana, Faro, Arnaldo, Palacio-Santos, Luz Amparo
Format: Article
Language:Spanish
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Summary:Oxidative dehydrogenation of propane is a reliable alternative for olefins production. This paper presents the results obtained on oxidative dehydrogenation of propane by using two materials based on cobalt, tungsten, and molybdenum. The materials were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), temperature programmed reduction (TPR), thermogravimetric analysis (TGA), and differential thermal analysis (DTA). The CoMo[phi]y material was calcined at 623 K, transforming itself to [beta]-CoMoO4 phase (CoMo[phi]623), the same phase is observed when the material is calcined at 873 K (CoMo[phi]y873). CoMo[phi]y623 showed the best performance in oxidative dehydrogenation of propane, a yield to propene of 3.4% was obtained at 623 K using a space velocity of 100 mLg-1min-1. CoWs[phi]y was calcined at 673 K, a low crystallinity wolframite was obtained. This material has a high selectivity to propene and low yield. CoMo[phi]y873 has a selectivity and conversion within the range of the results reported in the literature. This is a prospective catalyst for the oxidative dehydrogenation of propane; it was stable for 24 h of continuous operation at 773 K. La deshidrogenacion oxidativa de propano es una alternativa interesante para la obtencion de olefinas. En este trabajo se presentan los resultados obtenidos en la deshidrogenacion oxidativa de propano utilizando dos materiales a partir de cobalto, tungsteno y molibdeno. Los materiales fueron caracterizados utilizando Difraccion de Rayos X (XRD), espectroscopia infrarroja con transformada de Fourier (FTIR), analisis termogravimetrico (TGA) y analisis termico diferencial (DTA). El material CoMo[phi]y al ser calcinado a 623 K se transforma en la fase [beta]-CoMoO4 (CoMo[phi]y623), la misma fase es obtenida cuando el material se calcina a 873 K (CoMo[phi]y873). CoMo[phi]y623 muestra un buen desempeno en la deshidrogenacion oxidativa de propano, se obtuvo un rendimiento a propeno de 3,4% a una temperatura de 623 K y una velocidad espacial de 100 mL g-1 min-1. El material CoWs[phi]y fue calcinado a 673 K, obteniendose una fase wolframita de baja cristalinidad. Este material presenta una alta selectividad a propeno y un bajo rendimiento. CoMo[phi]y873 presenta una buena actividad y selectividad, comparable con otros materiales reportados en la literatura, y su potencial como catalizador en la deshidrogenacion oxidativa de propano se hace mas evidente con la prueba que muestra ser es
ISSN:0120-6230
DOI:10.17533/udea.redin.n84a11