公开(公告)号：US20180021725A1

公开(公告)日：2018-01-25

申请号：US15721139

申请日：2017-09-29

申请人： BATTELLE MEMORIAL INSTITUTE

发明人： Charles H. F. Peden ,  Feng Gao ,  Yilin Wang ,  Marton Kollar ,  Janos Szanyi

IPC分类号： B01D53/86 ,  B01D53/94 ,  B01J37/08 ,  B01J37/02 ,  B01J29/76

CPC分类号： B01D53/8628 ,  B01D53/9418 ,  B01D2251/2062 ,  B01D2255/202 ,  B01D2255/2022 ,  B01D2255/2025 ,  B01D2255/2027 ,  B01D2255/204 ,  B01D2255/2042 ,  B01D2255/2045 ,  B01D2255/2047 ,  B01D2255/20761 ,  B01D2255/50 ,  B01J29/763 ,  B01J37/0246 ,  B01J37/08 ,  B01J2229/183 ,  B01J2229/186 ,  Y02A50/2325 ,  Y02C20/10

摘要： Cu-exchanged zeolite catalysts with a chabazite structure containing selected concentrations of alkali ions or alkaline-earth ions and a lower concentration of (Cu) ions are described and a sequential process for making. Catalysts of the present invention reduce light-off temperatures providing enhanced low-temperature conversion of NOx gases. Catalysts of the present invention also exhibit high selectivity values compared to conventional NOx reduction catalysts.