| abstract |
A method of using a catalyst includes exposing the catalyst to at least one reactant in a chemical process. The catalyst includes small pore molecular sieves and copper having a maximum ring size of eight tetrahedral atoms. Preferably, the catalyst is a small pore molecular sieve of copper co-catalyst, i.e., a small pore molecular sieve loaded with copper. The chemical process undergoes an exposure period to at least one reducing atmosphere. The catalyst has an initial activity and the catalyst has a final activity after an exposure period to at least one reducing atmosphere. The final activity is within 30% of the initial activity at a temperature of 200 to 500 < 0 > C. |