Improved selectivity to C8-Olefins for isobutene oligomerization on NiO-W2O3/Al2O3 catalysts

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Título :	Improved selectivity to C8-Olefins for isobutene oligomerization on NiO-W2O3/Al2O3 catalysts
Palabras clave :	Oligomerización Gasolinas alto octano Catálisis ácida NiO-W2O3/Al2O3
Fecha de publicación :	16-ene-2013
Editorial :	Chemical Engineering Communications
Descripción :	Isobutene oligomerization on W2O3/Al2O3 and NiO-W2O3/Al2O3 catalysts (20 wt.% W2O3 and 5 wt.% NiO) was studied. The catalysts were prepared by impregnating ammonium tungstanate and nickel nitrate on a E-alumina sol-gel support. The XRD patterns of the samples calcined at 500°C show the presence of large W2O3 conglomerates on the W2O3/Al2O3 sample and smaller ones on the NiO-W2O3/Al2O3 catalyst. Pyridine-FT-IR absorption spectra study shows a higher acidity on the nickel-containing sample. The isobutene oligomerization was carried out in a gas-phase flow reactor (50°-150°C), and selectivity as high as 100% to the formation of the olefins fraction was obtained. The role of NiO coordinating the J-allyl adsorption of the olefins as well as its role to the high selectivity were discussed. Se reportan los resultados de la oligomerización de butenos para obtención de gasolinas de alto octano mediante catalizadores de alumina W2O3 con y sin la presencia de Ni. Instituto Politecnico Nacional, CONACYT
URI :	http://www.repositoriodigital.ipn.mx/handle/123456789/10610
Otros identificadores :	Chem.Eng.Comm. 986445 http://hdl.handle.net/123456789/73
Aparece en las colecciones:	Doctorado

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