Catalyst/hydrocarbon trap hybrid system

Details Catalyst/hydrocarbon trap hybrid system Catalyst/hydrocarbon trap hybrid system

1996-09-16

1998-06-30

Tran, Hien

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Mixture is exhaust from internal-combustion engine

4232132, 422171, 422177, 422180, 422211, 422222, F01N 310, B01D 5334

Patent

active

057729727

ABSTRACT:
The invention is an automotive catalyst system for treating internal combustion engine exhaust gases. The system comprises a hybrid system of hydrocarbon trapping material and palladium based three-way catalyst material, the hydrocarbon trapping material being capable of adsorbing hydrocarbons present in said internal combustion exhaust gases and substantially maintaining adsorbance of the adsorbed hydrocarbons until after the palladium based three-way catalyst material reaches a temperature at which it is capable of oxidizing the hydrocarbons. The palladium based three-way catalyst is carried on a substrate, which may be the trapping material, in an amount of between about 100-500 g palladium/ft.sup.3 of substrate.

REFERENCES:
patent: 4631262 (1986-12-01), Lachman et al.
patent: 4985210 (1991-01-01), Minami
patent: 5112790 (1992-05-01), Watanabe et al.
patent: 5116800 (1992-05-01), Williamson et al.
patent: 5125231 (1992-06-01), Patil et al.
patent: 5140811 (1992-08-01), Minami et al.
patent: 5142864 (1992-09-01), Dunne
patent: 5184462 (1993-02-01), Schatz
patent: 5207734 (1993-05-01), Day et al.
patent: 5269140 (1993-12-01), Take et al.
patent: 5271906 (1993-12-01), Yuuki et al.
patent: 5284638 (1994-02-01), Hertl et al.
patent: 5296198 (1994-03-01), Abe et al.
patent: 5303547 (1994-04-01), Mieville et al.
patent: 5330945 (1994-07-01), Beckmeyer et al.

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