Patent ID: 8349291
Filing Date: 2013-01-08
Classification: B01J,C01B,C10G

Abstract:
1. A microporous crystalline zeolite having a three-dimensional framework of at least AlO 2 and SiO 2 tetrahedral units and an empirical composition on an anhydrous basis of: where M1 is at least one exchangeable cation selected from the group consisting of alkali, alkaline earth metals, rare earth metals, ammonium ion, hydrogen ion and mixtures thereof, “a” is the mole ratio of M1 to (Al+E) and varies from about 0.05 to about 50, “n” is the weighted average valence of M1 and has a value of about +1 to about +3, E is an element selected from the group consisting of gallium, iron, boron, and mixtures thereof, “x” is the mole fraction of E and varies from 0 to 1.0, y′ is the mole ratio of Si to (Al+E) and varies from greater than about 4 to virtually pure silica and z′ is the mole ratio of O to (Al+E) and has a value determined by the equation: the zeolite characterized in that it has an x-ray diffraction pattern having at least the d-spacings and relative intensities set forth in Table B: and is thermally stable up to a temperature of at least 400° C., the microporous crystalline zeolite characterized in that it is prepared by treating an as synthesized microporous crystalline composition using a treating method selected from the group consisting of ion exchange, steaming, acid extractions, ammonium hexafluorosilicate treatment, and combinations thereof to obtain the microporous zeolite, the as synthesized composition having a three-dimensional framework of at least AlO 2 and SiO 2 tetrahedral units and an empirical composition in the as synthesized and anhydrous basis expressed by an empirical formula of: where M is at least one exchangeable cation selected from the group consisting of alkali, alkaline earth, and rare earth metals, “m” is the mole ratio of M to (Al+E) and varies from 0 to about 1.2, R is a singly charged organoammonium cation selected from the group of choline, ethyltrimethylammonium (ETMA), diethyldimethyl ammonium (DEDMA), tetraethyl ammonium (TEA), tetrapropylammonium (TPA), trimethylpropylammonium, trimethylbutylammonium, dimethyldiethanolammonium, and mixtures thereof, “r” is the mole ratio of R to (Al+E) and has a value of about 0.25 to about 2.0, “n” is the weighted average valence of M and has a value of about 1 to about 3, E is an element selected from the group consisting of gallium, iron, boron and mixtures thereof, “x” is the mole fraction of E and has a value from 0 to about 1.0, “y” is the mole ratio of Si to (Al+E) and varies from greater than 2 to about 12 and “z” is the mole ratio of O to (Al+E) and has a value determined by the equation: and is characterized in that it has the x-ray diffraction pattern having at least the d-spacings and intensities set forth in Table A: