Patent ID: 7501054
Filing Date: 2009-03-10
Classification: C10G

Abstract:
1. A process for upgrading a diesel fuel, comprising the steps of: providing a diesel fuel feedstock comprising a refinery stream having an aromatic content of at least about 20% by wt., and a cetane number less than about 44; hydrogenating the feedstock at a pressure of less than about 600 psig so as to provide a hydrogenated product wherein a portion of the feedstock is converted to alkyl-naphthene-aromatic compounds; and selectively oxidizing the hydrogenated product in the presence of a catalyst containing between about 1% and about 5% by weight of an element selected from the group consisting of oxides of Co, Ni, Fe, Cr, Cu and mixtures thereof; between about 300 and about 10,000 wt ppm of an oxide promoter; and between about 1% and about 4% by wt. of a nitrogen compound deposited on a support so as to convert the alkyl-naphthene-aromatic compounds to alkyl ketones wherein the oxygen is substantially distributed over the distillation range of the final product, wherein the oxygen is substantially distributed over the distillation range of the final product.