Keith W Nicholson

US Patent:

6342129, Jan 29, 2002

Filed:

May 14, 1998

Appl. No.:

09/079424

Inventors:

Robert H. Vaughn - Bethel Park PA
Keith R. Nicholson - Munhall PA

Assignee:

Calgon Carbon Corporation - Pittsburgh PA

International Classification:

C01B 3102

US Classification:

20415747, 423445 R, 502423

Abstract:

A process is provided for the production of a catalytically-active carbonaceous char. By this process, a nitrogen-containing compound is combined with an uncarbonized nitrogen-poor carbon-containing material. The resulting mixture is then carbonized and oxidized at temperatures less than 600Â C. The resulting low-temperature char is next heated to temperatures greater than 600Â C. and subsequently activated with H O, CO , or O , singly or in any combination, to result in the catalytically-active carbonaceous char. The resulting catalytically-active carbonaceous char has utility for the chemical conversion of peroxides, hydrides, SO , NO , and chloramines in liquid and/or gaseous media.

US Patent:

6534442, Mar 18, 2003

Filed:

Jul 16, 1999

Appl. No.:

09/354178

Inventors:

Robert H. Vaughn - Bethel Park PA
Keith R. Nicholson - Munhall PA
Toan P. Vo - Upper St. Clair PA

Assignee:

Caigon Carbon Corporation - Pittsburgh PA

International Classification:

C01B 3112

US Classification:

502423, 20415747

Abstract:

A process is provided for the production of a catalytically active carbonaceous char. By this process, a nitrogen-containing compound is combined with an uncarbonized nitrogen-poor carbon-containing material. The resulting mixture is then carbonized and oxidized at temperatures less than 500Â C. The resulting char is next heated to temperatures greater than 500Â C and subsequently activated with H O, CO , or O , singly or in any combination, to result in the catalytically active carbonaceous char. The resulting catalytically active carbonaceous char has utility for the chemical conversion of peroxides, hydrides, SO , NO , and chloramines in liquid and/or gaseous media.