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Información tecnológica

versión On-line ISSN 0718-0764

Resumen

SANCHEZ, Lorena; LLANO, Biviana A  y  RIOS, Luis A. Production of Green Diesel from Castor Oil over Alumina-supported Nickel-Molybdenum Catalysts. Inf. tecnol. [online]. 2017, vol.28, n.1, pp.13-24. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642017000100003.

Catalysts of Ni-Mo type with different content of active species (Ni,Mo) were synthesized and supported over y-alumina and their catalytic activity in the deoxygenation process of castor oil was evaluated and compared with that obtained with a commercial catalyst. Prior to deoxygenation reactions, the catalysts were reduced and sulfurated with H2S produced in-situ. The catalysts were characterized by XRD, N2 adsorption-desorption at 77K, XRF and TPR. The catalytic tests were carried out in a high-pressure reactor (Parr, 500 mL), operating in semi-batch mode. It was found that the highest mass yield to renewable diesel (C9-C24) was 82.9%, obtained with the synthesized catalyst containing 4.5% NiO and 20% MoO3 operating at 350 °C, 90 bars and 10% catalyst concentration. Besides, this catalysts exhibited 100% conversion and the highest selectivities to C17 (54.4%) and C18 (20.9%), as well as the lowest selectivity to cracked products (0.83%).

Palabras clave : castor oil; deoxygenation; hydroprocessing; renewable diesel; Ni-Mo/y-alumina.

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