INCAPE   05401
INSTITUTO DE INVESTIGACIONES EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Ni and Ni-Ce/Al2O3 onto AISI 314 foams as structured catalysts applied to the oxidative dehydrogenation of ethane.
Autor/es:
J. P. BORTOLOZZI; T. WEISS; L. B. GUTIERREZ; M. A. ULLA
Lugar:
Lyon
Reunión:
Congreso; XIth European Congress on Catalysis (EUROPACAT XI); 2013
Resumen:
Nowadays ethylene is mainly produced by steam cracking of certain petroleum fractions such as naphtha or ethane. This process involves severe operating conditions with the consequently large energy consumption. Besides, side reactions are favored decreasing the global yields. Several alternative production routes are under intense research because ethylene is a key intermediate in the manufacture of valuable products, such as polyethylene, polyvinyl chloride (PVC) and styrene, among others. Catalytic oxidative dehydrogenation of ethane is an attractive route for the ethylene production. This process employs relatively low temperatures and diminishes the coke formation. On the other hand, a better global energy balance could be achieved due to the exothermic nature of reactions. A catalytic formulation in powder form is difficult to apply; therefore it is necessary to study the deposition of the catalytic powder onto structured substrates. The metallic foams are found among the most promising substrates, since they exhibit attractive properties such as low density, high porosity, high energy and mass transfer coefficients, which conduce to minimize hot spots generation and to reduce diffusional limitations. In this work, Ni and NiCe/Al2O3 catalysts in powder and structured forms were studied, in order to perform a comparative analysis of both systems. They were characterized by X-ray Diffraction (XRD), Laser Raman Spectroscopy (LRS), Temperature Programmed Reduction (TPR) and Chemical Microanalysis (EDX). The comparative analysis of their catalytic performances for the ethane oxidative dehydrogenation was carried out.