Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Patent
1996-07-19
1999-05-25
Yildirim, Bekir L.
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
502327, 502331, 502334, B01J 2358
Patent
active
059069597
ABSTRACT:
This invention relates to a catalyst for purifying an exhaust gas using a complex oxide having good heat-resistant and a purification performance which does not undergo degradation, particularly in a lean atmosphere at a high temperature of about 1,000.degree. C., by using the complex oxide containing platinum and at least one member of element selected from the group from an alkaline earth metal element and the Group IIIA element and, furthermore, by using at least one member of platinum complex oxides selected from the group of those Pt complex oxides expressed by the chemical structural formulas X.sub.4 PtO.sub.6 (X=Ca, Sr, Ba, Mg), X'.sub.2 Pt.sub.2 O.sub.7 (X'=Sc, La, Pr), SrX"PtO.sub.6 (X"=Co, Ni, Cu), Ba.sub.2 ZPtO.sub.6 (Z=Pr, Ce) and Ba.sub.8 Y.sub.3 Pt.sub.4 O.sub.17.5.
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L. Ben-Dor, et al. "The Growth Of Single Crystals of Sr.sub.4 PtO.sub.6 " Journal of Crystal Growth, vol. 64, 1983 pp. 395-396 North-Holland Publishing Company.
Y. Laligant, et al., "Synthesis and Single-Crystal Refinement Of Ba.sub.2 Y.sub.2 CuPtO.sub.8.", Europhyics Letters, vol. 4, No. 9, pp. 1023-1029 (1987).
Database WPI, AN 88-016561 & JP-A-62 277 150, Dec. 2, 1987.
Murachi Mikio
Sugiyama Masahiko
Yamasita Koiti
Toyota Jidosha & Kabushiki Kaisha
Yildirim Bekir L.
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