Patent ID: 8158104

Claim:
A microporous crystalline zeolite 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: M m n+ R r p+ Al 1-x E x Si y O z 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 2.0, R is an organoammonium cation selected from the group consisting of choline, ethyltrimethylammonium (ETMA), diethyldimethylammonium (DEDMA), tetraethyl ammonium (TEA), tetrapropylammonium (TPA), trimethylpropylammonium, trimethylbutylammonium, dimethyldiethanolammonium, hexamethonium, and mixtures thereof, “r” is the mole ratio of R to (Al+E) and has a value of about 0.25 to about 4.0, “n” is the weighted average valence of M and has a value of about 1 to about 3, “p” is the weighted average valence of R and varies from 1 to about 2, 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 1 to about 10 and “z” is the mole ratio of O to (Al+E) and has a value determined by the equation: z =( m·n+r·p+ 3+4 ·y )/2 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: TABLE A 2Θ d(Å) I/I0% 6.79-8.03 13.00-11.00 m-vs 11.56-12.11 7.65-7.30 w-s 19.07-20.4 4.65-4.35 m-s 23.02-24.23 3.86-3.67 m-vs 26.43-28.13 3.37-3.17 w-m 30.48-31.94 2.93-2.80 m-vs and is thermally stable up to a temperature of at least 500° C.