Methanol → Propylene Glycol

HRID 229895

Reaktionsgleichung

Reaktionsgleichung von HRID 229895
[CH3:1][O-:2].[Na+].[CH2:4]([OH:8])[CH:5]([OH:7])[CH3:6].[CH3:9][OH:10].CO>C1(=O)OC(C)CO1>[CH2:4]([OH:8])[CH:5]([OH:7])[CH3:6].[C:4](=[O:8])([O:10][CH3:9])[O:2][CH3:1]

Komponenten

6

Edukt 3

HCID 887MethanolHCID 10942334Sodium MethoxideHCID 86614669Propylene glycol methanol

Produkt 2

HCID 1030Propylene GlycolHCID 12021Dimethyl Carbonate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 7924Propylene CarbonateLösungsmittel2×

Versuchsvorschrift

In a process as described in FIG. 1 7 t/h (tonnes per hour) propylene carbonate is fed into the upper part of a reactive distillation zone. Sodium methanolate in 0.5 t/h propylene glycol/methanol mixture as transesterification catalyst is also passed into the upper part of zone in an amount of 0.05 t/h. Twenty t/h methanol, fed into a lower part of the distillation zone, passes upward, and reacts with the propylene carbonate to form propylene glycol product and dimethyl carbonate. The propylene glycol is recovered in an amount of 5 t/h.

Quellen und Nachweise

ORD-Eintrag
ord-92e778977c1649e1ab96e2996ca52116
Quelldatensatz
uspto-grants-2009_07
Patentnummer
US07563919B2

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