Process for making a catalytically-active carbonaceous char

Details Process for making a catalytically-active carbonaceous char Process for making a catalytically-active carbonaceous char

1995-03-21

1996-04-02

Pal, Asok

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Inorganic carbon containing

502423, 423579, B01J 2118, C01B 3112

Patent

active

055040500

ABSTRACT:
A process is provided for the manufacture of a catalytically-active carbonaceous char capable of rapidly decomposing hydrogen peroxide in aqueous solutions. The process of the invention uses a low-temperature carbonization and extensive oxidation of a bituminous coal or material having bituminous properties followed by exposure to a nitrogen-containing compound as the temperature of the carbonized and extensively oxidized char is increased to minimally 700.degree. C. The resultant char may then be activated as desired. These catalytically-active chars have the ability to rapidly decompose aqueous solutions of hydrogen peroxide and are useful for catalytic conversion of H.sub.2 S, SO.sub.2, NO, chloramines, and/or peroxides in liquid and/or gaseous streams.

REFERENCES:
patent: 4540678 (1985-09-01), Sutt, Jr.
patent: 5356849 (1994-10-01), Matviya et al.

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