Solid solution particle of oxides, a process for producing the s

Details Solid solution particle of oxides, a process for producing the s Solid solution particle of oxides, a process for producing the s

1996-12-04

1999-09-28

Lewis, Michael

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

Catalyst or precursor therefor

Metal, metal oxide or metal hydroxide

502300, 502306, 502349, B01J 2310

Patent

active

059588276

ABSTRACT:
A solid solution particle of oxides contains a solid solution of oxides in which one oxide is dissolved into the other oxide, and in which the degree of dissolution of one oxide into the other oxide is not less 50%, and in which an average diameter of crystallite is not more than 100 nm. The solid solution particle of oxides has small average diameter of a crystallite and large specific surface area, and it improves capacities such as an oxygen storage ability due to high degree of dissolution. A catalyst for purifying exhaust gases has excellent purifying performance by employing the solid solution comprising ceria and zirconia which has large OSC and high oxygen adsorption and discharge speed.

REFERENCES:
patent: 5532198 (1996-07-01), Chopin et al.
patent: 5693299 (1997-12-01), Chopin et al.
patent: 5712218 (1998-01-01), Chopin et al.
patent: 5723101 (1998-03-01), Cuif
patent: 5747401 (1998-05-01), Cuif
P. Fornasiero, R. DiMonte, G. Ranga Rao, J. Kaspar, S. Meriani, A. Trovarelli, & M. Graziani, Rh-Loaded CeO2-ZrO2 Solid Solutions as Highly Efficient Oxygen Exchangers: Dependence of the Reduction of Behavior and the Oxygen Storage Capacity on the Structural Properties, "Journal of Catalysis" (1995), pp. 168-177, No Month.

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