Catalyst for exhaust gas purification

Details Catalyst for exhaust gas purification Catalyst for exhaust gas purification

1992-07-09

1994-08-16

Klemanski, Helene

Catalyst, solid sorbent, or support therefor: product or process

Zeolite or clay, including gallium analogs

And additional al or si containing component

502 65, 502 66, 502 71, 502 73, 502 74, 423212, 4232132, 4232135, B01J 2928, B01J 2930, B01J 2936

Patent

active

053387155

ABSTRACT:
A catalyst for exhaust gas purification having a crystalline silicate including an oxide of an alkali metal and/or hydrogen ion, aluminum oxide, an oxide of an alkaline earth metal, Ca, Mg, Sn, or Ba, an X-ray diffraction pattern described in Table 1 in the specification, and containing at least one metal from the group consisting of the elements in Groups Ib and VIII of the periodic table, rare earth elements, titanium, vanadium, chromium, antimony, zinc, and manganese. With the use of a crystalline silicate containing alkaline earth elements together with other metals or with a composite structure of catalyst, the separation of aluminum or other metals from the crystal lattices (dealuminization or demetallization) can be controlled, and heat and steam resistance may be achieved.

REFERENCES:
patent: 4170571 (1979-10-01), Ritscher
patent: 4229424 (1980-10-01), Kokotailo
patent: 5164350 (1992-11-01), Abe et al.

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