Cooper, Dunham, Clark, Griffin & Moran
Selective removal of nitrogen oxides from waste gas
 A process for the removal of nitrogen oxides from a waste gas containing said oxides in conjunction with sulfur oxides which comprises contacting said waste gas with ammonia as a reducing agent at temperatures of from 250.degree. to 550.degree. C in the presence of a catalyst wherein an active component containing iron or copper as the active metal and a sulfate of aluminum are supported on a silica carrier. 
Japan Gasoline Co., Ltd.
B B B
B01D B01J B01J
inventional inventional inventional
Fusao Katshiko Tadashi Kiyoshi Takehiko Noriyuki Tomiaki Katuaki Kintaro Tsutomu
Nishida Adachi Asanabe Morikawa Takeda Suzuki Yamada Ohsato Tsuda Yanagihara