Process for the two-stage hydrogenation of methyl esters

Details Process for the two-stage hydrogenation of methyl esters Process for the two-stage hydrogenation of methyl esters

1995-09-29

1996-07-16

Evans, Joseph E.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C07C 29149, C07C 31125

Patent

active

055368891

ABSTRACT:
This invention relates to a process for the two-stage hydrogenation of methyl esters which comprises: a) contacting and reacting one or more detergent range methyl esters with hydrogen under predominantly liquid phase hydrogenation conditions at a temperature of less than about 230.degree. C., in the presence of a catalyst comprising a copper compound, a zinc compound, and at least one compound selected from the group consisting of aluminum, zirconium, magnesium, a rare earth and mixtures thereof, to produce an alcohol product and a wax ester product, and b) contacting and reacting the wax ester product from step a) with hydrogen under predominantly liquid phase hydrogenation conditions at a temperature greater than about 220.degree. C. in the presence of a catalyst comprising a copper compound, a zinc compound, and at least one compound selected from the group consisting of aluminum, zirconium, magnesium, a rare earth and mixtures thereof, to produce an alcohol product.

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