Continuous process for the preparation of a high-purity hydrogenated ose by catalytic hydrogenation

摘要

The invention relates to a continuous process for the preparation of a high-purity hydrogenated ose by catalytic hydrogenation of the corresponding ose in falling film reactors, wherein the hydrogenation is carried out in a series of fixed beds of ruthenium catalyst comprising:a) a first hydrogenation zone consisting of at least one fixed bed of ruthenium catalyst, andb) a second hydrogenation zone consisting of at least one fixed bed of ruthenium catalyst containing a promoter.