Patent ID: 7449169

Claim:
A microporous crystalline material of zeolitic nature which, in the calcined state and in the absence of defects in its crystal lattice manifested by the presence of silanols, has the empirical formula x(M 1 /nXO 2 ):yYO 2 :zGeO 2 :(1-z)SiO 2 in which: M is H+ or at least one inorganic cation of charge +n; X is at least one chemical element of oxidation state +3, preferably selected from the group consisting of Al, Ga, B, Fe and Cr; Y is at least one chemical element with oxidation state +4 other than Si and Ge, preferably selected from the group consisting of Ti, Sn and V, wherein x has a value less than 0.2, preferably less than 0.1 and can take the value zero, y has a value less than 0.1, preferably less than 0.05 and can take the value zero, z has a value less than 0.8, preferably between 0.005 and 0.5 and can take the value zero, and wherein the material, as synthesised, has an X-ray diffraction pattern with values of angle 2θ (degrees) and relative intensities (I/I 0 ) concordant with 2θ (degrees) ± 0.5 Intensity (I/I 0 ) 8.02 vs 8.43 vs 9.31 m 10.64 vs 20.26 m 21.81 s 22.53 vs where m is a medium relative intensity between 20 and 40%; s is a strong relative intensity between 40 and 60%, and vs is a very strong relative intensity between 60 and 100%.