Process for hydrogenating aqueous aldehyde mixtures

Details Process for hydrogenating aqueous aldehyde mixtures Process for hydrogenating aqueous aldehyde mixtures

1993-10-18

1999-02-23

Cook, Rebecca

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

Organic compounds

Oxygen containing

568881, 549509, C07C 2938

Patent

active

058746528

ABSTRACT:
A process for hydrogenating aqueous mixtures of 4-hydroxybutanal and 3-hydroxy-2-methylpropanal is disclosed. The process uses a metallic Pt--Ru catalyst supported on .gamma.-alumina. The process gives improved yields of 2-methyl-1,3-propanediol while minimizing the formation of unwanted by-products such as isobutyl alcohol and tetrahydrofuran.

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patent: 4263449 (1981-04-01), Saito et al.
patent: 4879420 (1989-11-01), Ernst
patent: 4933473 (1990-06-01), Ninomiya et al.
J. Catalysis 124 (1990) (Miura et al) "The Control of Metal Precursor Mobilities as Variable in the Preparation of Supported etc.".
J.Catalysis 124 (1990) (Alerasool et al.) "Preparation and Characterization of Support Pt-Ru Bimetallic Clusters: etc.".
Langmuir 4 (1988) 1083 (Alerasool et al.) "The Role of Preparative Variables on the Surface Composition of Supported etc.".
Nouveau J. de Chemie 4 (1980) 677 (Gomez et al.) "Catalytic Properties of Platinum-Ruthenium Catalysts".

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