公开(公告)号：US20150105246A1

公开(公告)日：2015-04-16

申请号：US14333846

申请日：2014-07-17

Applicant: Clean Diesel Technologies, Inc.

Inventor： Zahra Nazarpoor ,  Stephen J. Golden

IPC: B01J23/889 ,  B01J23/20 ,  C01G45/12

CPC classification number: B01J23/8892 ,  B01D53/945 ,  B01D2255/20715 ,  B01D2255/2073 ,  B01D2255/20761 ,  B01D2255/40 ,  B01D2255/405 ,  B01D2255/908 ,  B01J23/005 ,  B01J23/20 ,  B01J35/002 ,  B01J37/035 ,  C01G45/1242 ,  C01P2006/90 ,  Y02T10/22

Abstract: The effect of aging temperature on oxygen storage materials (OSM) substantially free from platinum group (PGM) and rare earth (RE) metals is disclosed. Samples of ZPGM-ZRE metals OSM, hydrothermally aged at a plurality of high temperatures are found to have significantly high oxygen storage capacity (OSC) and phase stability than conventional PGM catalysts with Ce-based OSM. ZPGM-ZRE metals OSM includes a formulation of Cu—Mn stoichiometric spinel structure deposited on Nb—Zr oxide support and may be converted into powder to be used as OSM application or coated onto catalyst substrate. ZPGM-ZRE metals OSM, after aging condition, presents enhanced level of thermal stability and OSC property which shows improved catalytic activity than conventional PGM catalysts including Ce-based OSM. ZPGM-ZRE metals OSM may be suitable for a vast number of applications, and more particularly in underfloor catalyst systems.

Abstract translation: 公开了老化温度对基本上不含铂族（PGM）和稀土（RE）金属的储氧材料（OSM）的影响。 发现在多个高温下水热老化的ZPGM-ZRE金属OSM样品具有比具有Ce基OSM的常规PGM催化剂显着高的储氧能力（OSC）和相稳定性。 ZPGM-ZRE金属OSM包括沉积在Nb-Zr氧化物载体上的Cu-Mn化学计量的尖晶石结构的配方，并且可以转化为粉末以用作OSM应用或涂覆到催化剂衬底上。 ZPGM-ZRE金属OSM在老化条件下表现出比常规PGM催化剂（包括Ce基OSM）更高的热稳定性和OSC性能，其显示出更好的催化活性。 ZPGM-ZRE金属OSM可能适用于广泛的应用，尤其适用于地板下的催化剂体系。