Hydrogenation method for hydroformylation mixture

Abstract

The present invention provides a process, which includes: in a homogeneous liquid phase including water, and over a fixed-bed catalyst, continuously hydrogenating at least one hydroformylation product obtained from a hydroformylation of one or more C4-16 olefins to produce at least one output mixture; wherein the output mixture includes at least one corresponding alcohol and from 0.05 to 10% by weight of water; and wherein in a steady-state operation of the process, from 3 to 50% more hydrogen is fed to the hydrogenation than is consumed by the hydrogenation.

Description

technical field

[0001] The present invention relates to a process for the hydrogenation of hydroformylation mixtures, ie the production of alcohols by hydrogenation of aldehydes in the liquid phase in the presence of water. Background technique

[0002] Alcohols can be prepared by catalytic hydrogenation of aldehydes obtained, for example, by hydroformylation of alkenes. A large number of alcohols are used as solvents and as intermediates for the preparation of many organic compounds. Important downstream products of alcohols are plasticizers and detergents.

[0003] Aldehydes are known to form alcohols by catalytic reduction with hydrogen. Catalysts comprising at least one metal of Groups 1b, 2b, 6b, 7b and / or 8 of the Periodic Table of the Elements are frequently used. The hydrogenation of aldehydes can be carried out continuously or discontinuously in the gas or liquid phase using powdered or stacked / shaped catalysts.

[0004] For the industri...