Patent ID: 7344697
Filing Date: 2008-03-18
Classification: B01J,C01B

Abstract:
1. A microporous crystalline zeolite material characterized in that it has, in the calcined state and in the absence of any defect in its crystalline lattice as manifested by the presence of silanols, the following empirical formula: wherein: M is selected from H X is, at least, one chemical element in +3 oxidation state, Y is, at least, one chemical element in +4 oxidation state and different from Si, x takes a value between 0 and 0.2, both included, y takes a value between 0 and 0.1, both included, and in that the material having, as synthesized, an x-ray diffraction pattern with, at least, the following values for the 2θ (degree) angle and the relative intensities shown in the table below: where m is a medium relative intensity between 20% and 40%, f is a strong relative intensity between 40% and 60%, and mf is a very strong relative intensity between 60% and 100%.