Hydrodehalogenation of aromatic compounds
AssigneeEngelhard Corporation
InventorsEdward N. Balko, Jeffrey B. Hoke, Gary A. Gramiccioni
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Abstract
A process for hydrodehalogenating halogenated aromatics present in a contaminated aqueous environmental source in which the halogenated aromatics are reacted with hydrogen gas or a source of hydrogen gas in the presence of a basic proton acceptor and a catalyst of palladium on carbon.
Claims11
A method of hydrodehalogenating halogenated phenols, halogenated benzenes and mixtures thereof present in a substantially aqueous medium comprising treating said medium with hydrogen gas or a source of hydrogen gas in the presence of a basic proton acceptor and a catalyst consisting essentially of palladium on a carbon substrate.
A method of hydrodehalogenating halogenated phenols, halogenated benzenes, and mixtures thereof in a substantially aqueous contaminated waste stream suspected of containing halogenated phenols and halogenated benzenes comprising passing the waste stream into contact with hydrogen gas or a source of hydrogen gas selected from hydrazine, hydrazine hydrate, hydrazine salts and borohydrides in the presence of a basic proton acceptor and a catalyst consisting essentially of palladium on a carbon substrate at a temperature of from ambient temperature to 50.degree. C. and at a pressure of from atmospheric pressure to 50 psig.
Dependencies are inferred from the claim text.