|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||423/2135 ; 423/210|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 21 인용 특허 : 8|
This invention relates to a catalytic composite for treating an exhaust gas comprising a support which is a refractory inorganic oxide having dispersed thereon lanthanum, at least one other rare earth component and at least one noble metal component selected from the group consisting of platinum, palladium, rhodium, ruthenium and iridium. An essential feature of said catalytic composite is that the lanthanum be present as crystalline particles of lanthanum oxide which have an average crystallite size of less than about 25 Angstroms. The support may be se...
A process for the treatment of exhaust gases which comprises contacting said gases with a catalytic composite comprising a support which is a refractory inorganic oxide selected from the group consisting of alumina, silica, titania, zirconia, aluminosilicates and mixtures thereof, having dispersed thereon lanthanum oxide, the lanthanum oxide being dispersed on said support by the method of commingling a solution of a lanthanum salt with a hydrosol of the metal precursor of said support, forming particles from said lanthanum containing hydrosol, calcining...