Patent ID: 8603433

Claim:
A zeolite X having a) a Si/Al framework mole ratio in a range from 1.0 to 1.5; b) a mean diameter not greater than 2.7 microns, as determined by sedigraph analysis; and c) a relative LTA intensity not greater than 0.35, as determined by a x-ray diffraction (XRD) method using a source of CuKα radiation to obtain XRD intensities in a range from 5° to 25° 2θ, wherein, the relative LTA intensity is calculated as 100 times the quotient of a ⁢ ⁢ sample ⁢ ⁢ LTA ⁢ ⁢ XRD ⁢ ⁢ intensity ⁢ ⁢ for ⁢ ⁢ the ⁢ ⁢ zeolite ⁢ ⁢ X a ⁢ ⁢ reference ⁢ ⁢ XRD ⁢ ⁢ intensity ⁢ ⁢ for ⁢ ⁢ a ⁢ ⁢ LTA ⁢ ⁢ zeolite reference ⁢ ⁢ material ⁢ ⁢ consisting ⁢ ⁢ essentially ⁢ ⁢ of ⁢ ⁢ LTA ⁢ ⁢ zeolite wherein, 1) the sample LTA XRD intensity of the zeolite X is the sum of the intensities for each LTA peak with Miller indices of (2 0 0), (4 2 0), and (6 2 2) at 7.27±0.16°, 16.29±0.34° and 24.27±0.50° 2θ, and 2) the reference XRD intensity of the LTA-type zeolite reference material is the sum of the intensities for each LTA peak with Miller indices of (2 0 0), (4 2 0), and (6 2 2) at 7.27±0.16°, 16.29±0.34° and 24.27±0.50° 2θ, wherein, the sample LTA XRD intensity and the reference XRD intensity are each i) obtained for a Na-exchanged form of the zeolite X and the LTA-type zeolite reference material, respectively, and ii) equilibrated at 50% relative humidity.