초록 ▼

A catalyst composition comprising a composite of ceria, lanthana, and alumina and a catalytically-effective amount of one or more platinum group metals deposited on the composite is disclosed. The composite is prepared by depositing a cerium compound on a calcined admixture of the lanthana and the a

A catalyst composition comprising a composite of ceria, lanthana, and alumina and a catalytically-effective amount of one or more platinum group metals deposited on the composite is disclosed. The composite is prepared by depositing a cerium compound on a calcined admixture of the lanthana and the alumina and calcining the composite. The catalyst is capable of operating in the combustion of carbonaceous fuel at high temperatures, e.g., greater than 2400°F. (1317°C.), for extended periods of time such as 20 hours with low emissions of carbon monoxide and nitrogen oxides.

대표청구항 ▼

A catalyst composition comprising (a) a composite of from about 1 to about 25 weight percent ceria, from about 1 to about 10 weight percent lanthana, and from about 65 to about 98 weight percent alumina, said composite prepared by depositing a solution of a cerium compound on a calcined admixture of

A catalyst composition comprising (a) a composite of from about 1 to about 25 weight percent ceria, from about 1 to about 10 weight percent lanthana, and from about 65 to about 98 weight percent alumina, said composite prepared by depositing a solution of a cerium compound on a calcined admixture of a lanthanum compound and an aluminum compound and calcining the composite; and (b) a catalytically-effective amount of one or more platinum group metals deposited on the calcined composite.