Removal of hydroxyl-, carboxy-, or amino substituents from aromatic compounds using a group VI B catalyst
AssigneeUop LLC
InventorLouis Schmerling
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Abstract
Substituent groups which are positioned on the nuclei of aromatic compounds may be removed therefrom by treating the substituted compound with hydrogen at an elevated temperature in the presence of hydrogenation catalysts and particularly transition metal oxides and sulfides.
Claims7
In a process for the removal of a hydroxyl-, carboxy- or amino- moiety from an aromatic compound substituted with said hydroxyl, carboxy or amino moiety which comprises contacting said aromatic compound with hydrogen at a temperature of from about 300.degree. C. to about 500.degree. C. and a pressure of from about 1 atmosphere to about 150 atmospheres and recovering the resultant aromatic compound, the improvement which comprises effecting said contacting in the presence of a catalyst consisting essentially of an oxide or sulfide of Group VIB of the Periodic Table of Elements.
Dependencies are inferred from the claim text.