B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 23/50 (2006.01) B01D 53/94 (2006.01) B01J 35/10 (2006.01) B01D 53/36 (1990.01)
Patent
CA 2138333
A NOx removal catalyst resistant to high temperatures, comprising an activated alumina wherein the specific surface area measured by the nitrogen adsorption method is 120 m2/g or more, the bulk density measured by the mercury porosimetry is 0.60 g/cm3 or more, and the skeleton density measured by the mercury porosimetry is 1.80 g/cm3 or less and silver carried on said activated alumina. When said catalyst or a structure having said catalyst coated on a substrate is brought in contact with exhaust gas from an internal combustion engine that is operated at a lean fuel/air ratio, such as a lean-burn engine, NOx can be removed efficiently within a quite short contact time.
Chonan Takeshi
Itoh Takashi
Kanno Yasuharu
Kosaki Yukio
Matsuda Takashi
N.e. Chemcat Corporation
Smart & Biggar
Sumitomo Metal Industries Ltd.
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