C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 29/141 (2006.01)
Patent
CA 2339503
A two-stage process for producing 1,3-propanediol by first hydrogenating at a temperature of 30 ~C to 80 ~C in the presence of an oxide-supported metal hydrogenation catalyst. Second, the resulting reaction solution is hydrogenated at a temperature of 80 ~C to 180 ~C to a 3-hydroxypropanal conversion of substantially 100 % in the presence of an activated carbon- supported metal hydrogenation catalyst.
L'invention concerne un procédé en deux étapes, permettant de produire un 1,3-propanediol au moyen d'une première hydrogénation d'un 3-hydroxypropanal, à une température comprise entre 30 ·C et 80 ·C, en présence d'un catalyseur d'hydrogénation à support de carbone. Dans une seconde étape, la solution de réactionnelle résultante est hydrogénée à une température comprise entre 80 ·C et 180 ·C, afin de transformer un 3-hydroxypropanal sensiblement à 100%, en présence d'un catalyseur d'hydrogénation à support de carbone.
Haas Thomas
Hofen Willi
Jaeger Bernd
Sauer Joerg
Vanheertum Rudolf
Bennett Jones Llp
E.i. Du Pont de Nemours And Company
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