| 摘要 |
Use of a NOx adsorber comprising a noble metal, such as platinum, palladium, rhodium, gold, silver, iridium, ruthenium, osmium, and a small pore molecular sieve having a maximum ring size of eight tetrahedral atoms, such as aluminosilicate sieves, aluninophosphate molecular sieves and metal-substituted aluminophosphate molecular sieves, to adsorb NOx at or below 200oC and release the adsorbed NOx at temperatures above 200oC. Also disclosed, is an exhaust system for internal combustion engines comprising the NOx adsorber and a method of reducing NOx in an exhaust gas using the NOx adsorber. |
