| abstract |
Vehicle exhaust gas comprising a monolayer of a second metal oxide comprising a refractory metal oxide having a large surface area, such as gamma-alumina, selected from the group consisting of titanium dioxide, cerium dioxide and zirconium dioxide. Support for catalyst for emission control. Typically, this monolayer has a thickness of less than about 10 mm. By depositing a support on a substrate such as cordierite in which a noble metal component such as platinum is deposited on at least a part of the monolayer, the support can be converted into a vehicle exhaust gas suppression catalyst. it can. Also preferably, the catalyst includes at least one NO x storage component deposited on at least a portion of the monolayer. Catalysts made using the catalyst support of the present invention exhibit excellent thermal stability and sulfur poisoning resistance. |