Patent ID: 6486365
Filing Date: 2002-11-26
Classification: C07C

Abstract:
A process for converting carbonyl-type impurities present in a phenolic solvent to high-boiling derivatives, which process comprises contacting the phenolic solvent with a catalyst at a catalytically-effective temperature, said catalyst comprising a layered double hydroxide composition of the formula:[MII1-xMIIIx(OH)2](Anâˆ’)x/n or a hydrate thereof, wherein MII is a divalent metal cation, MIII is a trivalent metal cation, A is an interlayer anion of charge nâˆ’, and x is from 0.12 to 0.8, thereby producing a phenol-containing stream with high-boiling derivatives and a reduced amount of carbonyl-type impurities.