Patent ID: 6117307
Filing Date: 2000-09-12
Classification: B01J,C01B,C10G

Abstract:
A catalyst comprising at least one matrix, at least one group VIII or VIB metal a promoter which is phosphorous, boron or silicon, and at least one NU-88 zeolite, said zeolite havingi) a chemical composition, expressed in terms of the mole ratios of the oxides for the anhydrous state, of the formula:100XO.sub.2, mY.sub.2 O.sub.3, pR.sub.2/n Owhereinm is 10 or less;p is 20 or less;R is one or more cations with valence n;X is silicon and/or germanium;Y is aluminum, iron, gallium, boron, titanium, vanadium, zirconium, molybdenum, arsenic, antimony, chromium or manganese; andii) an X ray diffraction diagram, in as synthesized state, which comprises the results shown in Table 1:TABLE 1  X ray diffraction diagram for NU-88 zeolite (as synthesized state) d.sub.hkl (10.sup.-10 m) I/I.sub.max  12.1 .+-. 0.35 s or vs (1) 11.0 .+-. 0.30 s (1) 9.88 .+-. 0.25 m (1) 6.17 .+-. 0.15 w 3.97 .+-. 0.09 vs (2) 3.90 .+-. 0.08 vs (2) 3.80 .+-. 0.08 w (2) 3.66 .+-. 0.07 vw 3.52 .+-. 0.07 vw 3.27 .+-. 0.07 vw 3.09 .+-. 0.06 w 2.91 .+-. 0.06 w 2.68 .+-. 0.06 vw 2.49 .+-. 0.05 vw 2.20 .+-. 0.05 vw 2.059 .+-. 0.05 w 1.729 .+-. 0.04 vw  (1) these peaks were not resolved and formed part of a feature; (2) these peaks were not resolved and formed part of the same feature.