公开(公告)号：US08038951B2

公开(公告)日：2011-10-18

申请号：US12014295

申请日：2008-01-15

申请人： Knut Wassermann ,  Stephen Siemund ,  Michel Deeba ,  Harold Rabinowitz

发明人： Knut Wassermann ,  Stephen Siemund ,  Michel Deeba ,  Harold Rabinowitz

IPC分类号： B01D50/00 ,  B01D53/34 ,  F01N3/00 ,  F01N3/10 ,  F23J11/00 ,  B01J23/00 ,  B01J23/44 ,  B01J23/42 ,  B01D53/56 ,  B01D53/94 ,  B01J8/02 ,  C01B21/00 ,  C01B23/00 ,  C01B25/00 ,  C01B31/00 ,  C01B33/00 ,  C01B35/00 ,  C01G28/00 ,  C01G30/00

CPC分类号： B01J21/066 ,  B01J23/44 ,  B01J23/63 ,  B01J35/04 ,  B01J37/0244

摘要： Provided are catalyst composites comprising: a catalytic material on a carrier, the catalytic material comprising a precious metal selected from a palladium component and an oxygen storage component, the oxygen storage component being present in an amount of at least 10% by weight, wherein substantially all of the oxygen storage component is in intimate contact with the palladium component and the catalytic material is effective to substantially simultaneously oxidize carbon monoxide and hydrocarbons and reduce nitrogen oxides. A catalyst composite comprising: a catalytic material on a carrier, the catalytic material comprising a palladium component and a ceria-zirconia composite support, the ceria being present in an amount in the range of 10 to 70% by weight, wherein substantially all of the ceria is in intimate contact with at least a portion of the palladium component. Methods of making and using these catalysts along with systems containing these catalysts are also provided.

摘要翻译： 提供了催化剂复合材料，其包括：载体上的催化材料，催化材料包含选自钯组分和储氧组分的贵金属，所述储氧组分的存在量为至少10重量％，其中基本上 所有储氧组分与钯组分紧密接触，催化材料有效地基本上同时氧化一氧化碳和烃并还原氮氧化物。 一种催化剂复合材料，包括：在载体上的催化材料，所述催化材料包含钯组分和二氧化铈 - 氧化锆复合载体，所述二氧化铈的存在量为10至70重量％，其中基本上全部 二氧化铈与钯组分的至少一部分紧密接触。 还提供了制备和使用这些催化剂以及含有这些催化剂的体系的方法。