公开(公告)号：AU2003288219A1

公开(公告)日：2004-06-30

申请号：AU2003288219

申请日：2003-12-03

Applicant: BASF AG

Inventor： ARNDT JAN-DIRK ,  KLASS KATRIN ,  LAAR FREDERIK VAN ,  HERWIG STEPHAN ,  HENKELMANN JOCHEM

IPC: B01J21/08 ,  B01J23/46 ,  B01J33/00 ,  B01J37/18 ,  C07C29/141 ,  C07C31/26 ,  C07C31/18

Abstract: A continuous process for preparing sugar alcohols by catalytic hydrogenation of an aqueous solution of a saccharide, which forms the corresponding sugar alcohol on hydrogenation, in the presence of a ruthenium catalyst which is obtainable by: i) single or multiple treatment of an amorphous silicon-dioxide-based support material with a halogen-free aqueous solution of a low-molecular-weight ruthenium compound and subsequent drying of the treated support material at below 200° C., ii) reducing the solid obtained in i) with hydrogen at from 100 to 350° C., step ii) being carried out immediately after step i), which comprises, before the hydrogenation, bringing the aqueous saccharide solution to be hydrogenated into contact with the support material.