Disordered molecular sieve supports for the selective catalytic reduction of NO

1. A catalyst for selective catalytic reduction of NO x comprising:

a. one or more transition metals selected from the group consisting of Cr, Mn, Fe, Co, Ce, Ni, Cu, Zn, Ga, Mo, Ru, Rh, Pd, Ag, In, Sn, Re, Ir, Pt, and mixtures thereof, and

b. a support comprising a molecular sieve having at least one intergrowth phase consisting of an aluminosilicate, a silico-aluminophosphate, or aluminosilicate/silico-aluminophosphate combination having two different small-pore, three-dimensional framework structures,

wherein the first framework structure is CHA and the second framework structure is GME,

wherein the one or more transition metals are disposed inside the pores of the molecular sieve, on the external surface of the molecular sieve, or both inside the pores and on the external surface of the molecular sieve, and

wherein said transition metal is present in an amount of about 0.01 to about 6 weight percent, based on the total weight of the molecular sieve.

2. The catalyst of claim 1 , wherein the first and second framework structures are present in a mole ratio of about 1:99 to 99:1.

3. The catalyst of claim 1 , wherein the first and second framework structures are present in a mole ratio of about 5:95 to about 15:85.

4. The catalyst of claim 1 , wherein said transition metal is selected from the group consisting of Cu, Fe, Co, Pt, and Mn.

5. The catalyst of claim 1 , wherein said transition metal is Cu.

6. The catalyst of claim 1 , wherein said transition metal is present in an amount of about 1 to about 3 weight percent based on the total weight of the molecular sieve.

7. The catalyst of claim 5 , wherein said transition metal is present in an amount of about 1 to about 3 weight percent based on the total weight of the molecular sieve.