Zoned catalytic filters for treatment of exhaust gas

A catalyst article comprising:

• a. a wall flow monolith having an inlet face end and an outlet face and an axis of gas flow from said inlet face to said outlet face;
• b. a first SCR catalyst composition comprising a molecular sieve framework at a first sieve concentration and an exchanged metal at a first metal concentration, wherein said first SCR catalyst is disposed in a first zone;
• c. a second SCR catalyst composition comprising said molecular sieve framework and comprising said exchanged metal at a second metal concentration that is at or below said first metal concentration, wherein said second SCR catalyst is disposed in a second zone;
• wherein said first zone and second zone are disposed within a portion of said wall flow monolith and in series along said axis, and wherein said first zone is disposed proximal to said inlet face, and said second zone is disposed proximal to said outlet face;
• and
• d. one or more intermediate zones disposed between said first and second zones and in series along said axis, wherein said intermediate zones each comprise an SCR catalyst composition having said molecular sieve framework and said exchanged metal wherein said intermediate zones are arranged to form a metal concentration gradient having a high concentration end and a low concentration end with the high concentration end being closer to the inlet face relative to the low concentration end.