Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Mixture is exhaust from internal-combustion engine
Patent
1975-08-29
1977-01-18
Peters, G. O.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Mixture is exhaust from internal-combustion engine
4232137, B01D 5334
Patent
active
040039765
ABSTRACT:
A converter for the purification of exhaust gases from internal combustion engines and the like which comprises a first converting layer of a catalyst of a sintered body structure selected from the group consisting of nickel oxide-copper oxide; manganese oxide-cerium oxide; manganese oxide-lanthanum oxide; manganese oxide-iron oxide; manganese oxide-niobium oxide; manganese oxide-nickel oxide; and either niobium oxide or yttrium oxide or mixtures of both with cobalt oxide; and a second converting layer of a catalyst selected from the group consisting of platinum; platinum-rhodium; platinum-palladium; and nickel oxide, chromium oxide, copper oxide, iron oxide and barium oxide; wherein the converter is constructed so that the exhaust gases pass through said first converting layer and then through said second converting layer. A copper-filled layer consisting of a copper-containing material may be further provided upstream of said first and second converting layers.
REFERENCES:
patent: 3429656 (1969-02-01), Taylor et al.
patent: 3444099 (1969-05-01), Taylor et al.
patent: 3773894 (1973-11-01), Bernstein et al.
patent: 3816594 (1974-06-01), Kobylinski et al.
patent: 3825654 (1974-07-01), Kobylinski et al.
Doi Haruo
Kamigaito Osami
Kandori Toshio
Komatsu Noboru
Sano Kazuya
Kabushiki Kaisha Toyota Chuo Kenkyusho
Peters G. O.
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