Abstract

SALAMANCA-GUZMAN, Maurin et al. Oxidative dehydrogenation of propane with cobalt, tungsten and molybdenum based materials. Rev.fac.ing.univ. Antioquia [online]. 2017, n.84, pp.97-104. ISSN 0120-6230.  https://doi.org/10.17533/udea.redin.n84a11.

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(y material was calcined at 623 K, transforming itself to β-CoMoO4 phase (CoMo(623), the same phase is observed when the material is calcined at 873 K (CoMo(y873). CoMo(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(y was calcined at 673 K, a low crystallinity wolframite was obtained. This material has a high selectivity to propene and low yield. CoMo(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.

Keywords : Oxidative dehydrogenation; propane; cobalt; tungsten; molybdenum.

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