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Methods of refining natural oils, and methods of producing fuel compositions

United States Patent

October 27, 2015
View the Complete Patent at the US Patent & Trademark Office
A method of refining a natural oil includes: (a) providing a feedstock that includes a natural oil; (b) reacting the feedstock in the presence of a metathesis catalyst to form a metathesized product that includes olefins and esters; (c) passivating residual metathesis catalyst with an agent that comprises nitric acid; (d) separating the olefins in the metathesized product from the esters in the metathesized product; and (e) transesterifying the esters in the presence of an alcohol to form a transesterified product and/or hydrogenating the olefins to form a fully or partially saturated hydrogenated product. Methods for suppressing isomerization of olefin metathesis products produced in a metathesis reaction, and methods of producing fuel compositions are described.
Firth; Bruce E. (Buffalo Grove, IL), Kirk; Sharon E. (New Lenox, IL)
Elevance Renewable Sciences, Inc. (Woodridge, IL)
13/ 335,584
December 22, 2011
FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT This invention was made with government support under Contract No. DE-EE0002872 awarded by Department of Energy. The government has certain rights in the invention.