Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Mixture is exhaust from internal-combustion engine
Patent
1993-12-30
1995-07-18
Straub, Gary P.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Mixture is exhaust from internal-combustion engine
4232392, 4232453, 423247, B01D 5394, B01D 5386
Patent
active
054339332
ABSTRACT:
A method for purifying an exhaust gas containing an excess amount of oxygen, to remove nitrogen oxides, carbon monoxide and hydrocarbons therefrom, by bringing a catalyst into contact with the exhaust gas, the catalyst comprising a zeolite ion-exchanged with (a) cobalt or (b) both cobalt and at least one metal selected from the group consisting of alkaline earth metals and rare earth metals, the zeolite being selected from the group consisting of ferrierite, ZSM-5, ZSM-11, ZSM-12 and ZSM-20, and having a silica-to-alumina molar ratio of from 15 to 1,000.
REFERENCES:
patent: 3181928 (1965-05-01), Frilette
patent: 3407030 (1968-10-01), Clifford
patent: 3839545 (1974-10-01), Schwab
patent: 4052337 (1977-10-01), Nishikawa et al.
patent: 4297328 (1981-10-01), Ritscher et al.
patent: 4331644 (1982-05-01), Ritscher
patent: 4855115 (1989-08-01), Imanari
patent: 4867954 (1989-09-01), Staniulis
patent: 4874590 (1989-10-01), Staniulis et al.
patent: 4950461 (1990-08-01), Schwetje
patent: 5041272 (1991-08-01), Tamura et al.
patent: 5149512 (1992-09-01), Li et al.
patent: 5260043 (1993-11-01), Li et al.
patent: 5382416 (1995-01-01), Nakano et al.
Eshita Akinori
Ishibashi Kazunobu
Kasahara Senshi
Kondoh Shiroh
Matsumoto Shin-ichi
Kabushiki Kaisha Toyota Chuo Kenkyusho
Straub Gary P.
Tosoh Corporation
Toyota Jidosha & Kabushiki Kaisha
Vanoy Timothy C.
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