Method of treating an aldehyde mixture, use of the treated aldehyde, and an alcohol
AssigneeShell Oil Company
InventorsGlenn Charles Komplin, Joseph Broun Powell, Paul Richard Weider
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Abstract
A method of treating an aldehyde mixture comprising a carboxylic acid and a metal cation, which method comprises: contacting the aldehyde mixture with a basic separating medium, and subsequently or simultaneously contacting with an acidic separating medium; use of the treated aldehyde mixture to prepare an alcohol; and the alcohol.
Claims25
A method of treating an aldehyde mixture comprising a carboxylic acid and a metal cation, which method comprises:
- contacting the aldehyde mixture with a basic separating medium, and
- subsequently or simultaneously contacting with an acidic separating medium.
A method of treating an aqueous 3-hydroxypropionaldehyde mixture comprising 3-hydroxypropionic acid and cobalt and/or rhodium cations, which method comprises:
- contacting the aqueous 3-hydroxypropionaldehyde mixture with a weak base anion exchange resin while controlling the pH of the mixture at a value of at most 6, as measured at a temperature of operation, and
- subsequently or simultaneously contacting with a carboxylic acid cation exchange resin.
A process for preparing a 1,3-propanediol which process comprises:
- treating a 3-hydroxypropionaldehyde mixture comprising a carboxylic acid and cobalt and/or rhodium cations, by:
- contacting the 3-hydroxypropionaldehyde mixture with a basic separating medium while controlling the pH of the 3-hydroxypropionaldehyde mixture at a value of at most 6, as measured at a temperature of operation, and
- subsequently or simultaneously contacting with an acidic separating medium;
- and
- hydrogenating the treated 3-hydroxypropionaldehyde mixture.
Dependencies are inferred from the claim text.