Purification of acetic acid product streams

摘要

In one embodiment, the invention is to an ion exchange resin composition comprising a metal-functionalized exchange resin comprising from 3% to 94% metal-functionalized active sites; and a non-metal-functionalized exchange resin comprising non-metal-functionalized active sites.

主权项

1. A process for purifying a crude acetic acid composition comprising acetic acid, iodides, and corrosion metals, the process comprising:
contacting the crude acetic acid composition with an ion exchange resin composition comprising: a mixture comprising: (a) a metal ion-functionalized exchange resin comprising from 3% to 94% metal ion-functionalized active sites; and (b) a non-metal ion-functionalized exchange resin comprising non-metal ion-functionalized active sites, wherein the percentages are based on the total number of sites of the metal ion-functionalized exchange resin and the non-metal ion-functionalized exchange resin; wherein the non-metal ion-functionalized exchange resin does not contain any metal ion-functionalized active sites; and wherein the non-metal ion-functionalized exchanged resin optionally comprises non-metal ion functionalization to form a purified acetic acid product.