Title:
EXHAUST GAS PURIFYING CATALYST
Document Type and Number:
Japanese Patent JP3300721
Kind Code:
B2
Abstract:
PURPOSE: To obtain a catalyst for purifying exhaust gas contg. NOx, CO and hydrocarbon.
CONSTITUTION: Indium and one or more kinds of rare earth elements are allowed to coexist with a crystalline silicate having an X-ray diffraction pattern shown by table A and a chemical formula (1±0.8)R2O.[aM2O3.bM'O.cAl2 O3]-.ySiO2 (expressed in terms of the molar ratio among oxides in a dehydrate state) to obtain the objective exhaust gas purifying catalyst. In the formula, R is an alkali metal ion and/or an H ion, M is ions of one or more kinds of elements selected among group VIII elements, rare earth elements, Ti, V, Cr, Nb, Sb and Ga, M' is an alkaline earth metal ion of Mg, Ca, Sr or Ba, a>0, 20>b≥0. a+c=1 and 3,000>y>11.
Inventors:
Shigeru Nojima
Kozo Iida
Takafuru Kobayashi
Akira Serizawa
Kozo Iida
Takafuru Kobayashi
Akira Serizawa
Application Number:
JP819394A
Publication Date:
July 08, 2002
Filing Date:
January 28, 1994
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
B01D53/86; B01D53/94; B01J29/04; (IPC1-7): B01J29/04; B01D53/86; B01D53/94
Domestic Patent References:
| JP671181A |
Attorney, Agent or Firm:
Akira Uchida (2 outside)