C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 31/20 (2006.01) C07C 29/141 (2006.01) C07C 45/58 (2006.01)
Patent
CA 2256688
A process for preparing 1, 3-alkanediols via the hydrogenation of 3- hydroxyaikanals wherein the process comprises passing an aqueous 3-hydroxyalkanal solution to a hydrogenation zone and in contact with a fixed- bed hydrogenation catalyst under hydrogenation conditions to form an aqueous 1 3-alkanediol solution, characterized in that the aqueous 3- hydroxyalkanal solution has a 3 hydroxyalkanal concentration within the range of 0.2 to 5 wt.%.
L'invention concerne un procédé permettant de préparer des 1,3-alcanediols par hydrogénation de 3-hydroxyalcanals. Selon le procédé, on fait passer une solution aqueuse de 3-hydroxyalcanals dans une zone d'hydrogénation et en contact avec un catalyseur d'hydrogénation en lit fixe, dans des conditions d'hydrogénation, de façon à former une solution aqueuse de 1,3-alcanediols. Le procédé est caractérisé par le fait que la solution aqueuse de 3-hydroxyalcanals a une concentration en 3-hydroxyalcanals comprise entre 0,2 et 5 % en poids.
Arhancet Juan Pedro
Matzakos Andreas Nikolaos
Pledger William Ridley
Powell Joseph Broun
Slaugh Lynn Henry
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Shell Internationale Research Maatschappij B.v.
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