Patent ID: 8679451

Claim:
An aluminosilicate ZSM-12 molecular sieve, characterized as polycrystalline aggregates of needle-like crystallites, and wherein each needle-like crystallite has a width in the range of about 15 nm to about 25 and a length in the range from about 60 nm to about 80 nm, with average dimensions of the crystallites of about 20 nm by about 60 nm, wherein the molecular sieve has a composition, as-synthesized and in the anhydrous state, in terms of mole ratios, as follows: SiO 2 /Al 2 O 3 30-100 (Q + A)/SiO 2 0.015-0.06 M/SiO 2 0-0.1 wherein: (1) M is at least one element selected from Groups 1 and 2 of the Periodic Table; (2) Q is cationic 1,6-bis(2,3-dimethylimidazolium)hexane, and Q>0; and (3) A is a second nitrogen-containing structure directing agent, and A is greater than 0; the aluminosilicate ZSM-12 molecular sieve having an X-ray diffraction pattern substantially as shown in the following Table: 2 Theta d-spacing (Angstroms) Relative Intensity 7.51 ± 0.25 11.76 M 8.86 ± 0.25 9.98 W 14.81 ± 0.25 5.98 W 15.28 ± 0.25 5.80 W 18.75 ± 0.25 4.73 W 19.11 ± 0.25 4.64 W 20.03 ± 0.25 4.43 W 20.91 ± 0.25 4.25 VS 21.98 ± 0.25 4.04 W 22.42 ± 0.25 3.96 W 22.98 ± 0.25 3.88 W 23.24 ± 0.25 3.82 M 25.21 ± 0.25 3.53 W 25.78 ± 0.25 3.45 W 26.33 ± 0.25 3.38 W 26.86 ± 0.25 3.32 W 27.99 ± 0.25 3.19 W 29.33 ± 0.25 3.04 W 30.88 ± 0.25 2.89 W 35.71 ± 0.25 2.51 W 36.97 ± 0.25 2.43 W 38.57 ± 0.25 2.33 W.