Method for nox removal by catalytic carbon

Details Method for nox removal by catalytic carbon Method for nox removal by catalytic carbon

B - Operations, Transporting

01

D

B01D 53/34 (2006.01) B01D 53/86 (2006.01) B01J 21/18 (2006.01) B01J 37/08 (2006.01)

Patent

CA 2131996

2131996 9416806 PCTABS00033 An improved process is provided for the selective removal of NOx from gas streams containing oxygen and ammonia by contacting said stream with a catalytically-active carbonaceous char. The improvement is provided by the use of a catalytically-active carbonaceous char prepared by low-temperature carbonization and oxidation of a bituminous coal or bituminous coal-like material followed by exposure to a nitrogen-containing compound during the initial high-temperature exposure of the low-temperature oxidized char. Following this initial high-temperature treatment the material can be further calcined and/or activated as desired.

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