HYDROGENATION OF MOLTEN ALDEHYDIC DIMETHYL TEREPHTHALATE

摘要

HYDROGENATION OF MOLTEN ALDEHYDIC DIMETHYL TEREPHTHALATEs Disclosed is a process for the catalytic hydrogenation of the aldehydic content of molten aldehydic dimethyl terephthalate (DMT) with a catalyst that not only promotes hydrogenation of the aldehyde moiety but also at the temperature of molten DMT tends to promote hydrogenation of the aromatic ring. However, in this process ring hydrogenation is minimized. The process comprises contacting said molten aldehydic DMT with molecular hydrogen and said catalyst for a period of time sufficient for substantial aldehyde hydrogenation with minimal ring hydrogenation.