Deep oxidation of halogenated organics with porous carbonaceous materials
AssigneeRohm and Haas Company
InventorsWilliam H. Brendley, Jr., Gerald Grunewald, Steven Petrosius, Russell Drago
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Abstract
A method for oxidizing halogenated organic compounds comprising passing a mixture of the halogenated organic compound and excess oxygen over a catalyst comprising a carbonaceous material under mild reaction conditions. The temperature of the reaction is below 400.degree. C. and the catalyst may be doped with acidic redox-active metal compounds.
Claims35
A method of completely oxidizing a halogenated organic compound which comprises:
- contacting, at a temperature below about 400.degree. C., a carbonaceous catalyst having acidic sites with the halogenated organic compound and an amount of oxygen at least sufficient to achieve complete oxidation of the halogenated hydrocarbon, wherein said temperature is sufficient to achieve complete oxidation of the halogenated hydrocarbon and wherein said catalyst comprises a partially pyrolyzed resin containing macropores, mesopores and micropores.
A method of regenerating a carbonaceous catalyst saturated with halogenated organic compounds, said catalyst having acidic sites and comprising a partially pyrolyzed resin containing macropores, mesopores and micropores, which method comprises:
- heating the carbonaceous catalyst saturated with halogenated organic compounds, at a temperature of below about 400.degree. C., in the presence of an amount of oxygen, air, or mixture of steam with oxygen or air, at least sufficient to achieve complete oxidation of the halogenated organic compound.
The method of 13 wherein the halogenated organic compound is selected from the group consisting of aliphatic halides and aromatic halides.
A method of removing halogenated organic compounds from soil, water and other solutions or air which comprises:
- contacting the soil, water or air containing the halogenated organic compound with a carbonaceous catalyst at room temperature, said catalyst having acidic sites and comprising a partially pyrolyzed resin containing macropores, mesopores and micropores, and
- heating the carbonaceous catalyst, at a temperature of below about 400.degree. C., in the presence of an amount of oxygen, air, or mixture of steam with oxygen or air, at least sufficient to achieve complete oxidation of the halogenated organic compound, wherein said temperature is sufficient to achieve complete oxidation of the halogenated hydrocarbon.
Dependencies are inferred from the claim text.