Patent ID: 7087546

Claim:
A process for regenerating and rejuvenating an additive-based catalyst that has been used as a hydrotreating catalyst containing Group VIB and Group VIII hydrogenation metals, comprising the steps of regenerating the catalyst subsequent to its use as a hydrotreating catalyst by contacting it with an oxygen-containing gas at a maximum temperature of 500° C., followed by rejuvenating the catalyst by contacting it with an organic additive comprising an organic compound, other than a compound that said catalyst is contacted with in the course of its use as a hydrotreating catalyst prior to regeneration and rejuvenation, selected from one or more compounds selected from the group consisting of a compound having at least two hydroxyl groups and 2–10 carbon atoms per molecule, a (poly)ether of a compound with at least two hydroxyl groups and 2–10 carbon atoms per molecule, and a compound comprising at least one covalently bonded nitrogen atom and at least one carbonyl moiety, and incorporating said organic additive into said catalyst.