CPC F01N 3/2066 (2013.01) [B01J 23/22 (2013.01); B01J 23/92 (2013.01); B01D 53/9418 (2013.01); B01D 53/9422 (2013.01); B01D 2255/20723 (2013.01); F01N 3/0814 (2013.01); F01N 3/0871 (2013.01); F01N 3/0885 (2013.01); F01N 9/005 (2013.01); F01N 11/005 (2013.01); F01N 2260/04 (2013.01); F01N 2370/02 (2013.01); F01N 2560/026 (2013.01); F01N 2560/028 (2013.01); F01N 2570/22 (2013.01); F01N 2900/1404 (2013.01); F01N 2900/1602 (2013.01); F01N 2900/1614 (2013.01)] | 20 Claims |
1. A method of recovering catalyst performance, comprising:
providing a vanadium selective catalytic reduction (VSCR) catalyst;
exposing the VSCR catalyst to a first humidity level in a range of 50%-100% relative humidity, at a first temperature in a range of 20° C.-100° C., for a first period of time of at least two hours; and
thermally treating the VSCR catalyst at a second temperature in a range of 300° C.-600° C. for a second period of time of at least one hour.
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