Patent ID: 7771703

Claim:
A process for preparing an IZM-1 crystalline solid comprising mixing in an aqueous medium at least one source of at least one oxide XO 2 , optionally at least one source of at least one oxide Y 2 O 3 , optionally at least one source of at least one alkali and/or alkaline-earth metal with valency n, optionally at least one source of hydroxide ions and at least two different organic species R and S, hydrothermal treatment of said mixture until said IZM-1 crystalline solid forms, followed by filtration, washing, drying and calcining steps, wherein R is 6-(dibutylamino)-1,8-diazabicyclo[5.4.0]undec-7-ene and S is ethylene glycol, HO—CH 2 —CH 2 —OH, said IZM-1 crystalline solid having an X ray diffraction diagram including at least the peaks set out in the table below: 2 theta (°) d hkl (Å) I/I 0 7.60 11.62 Vs 8.78 10.06 Mw 10.74 8.23 Vw 11.43 7.74 Vw 12.45 7.11 Vw 14.60 6.06 Vw 15.24 5.81 W 16.93 5.23 Vw 17.62 5.03 Vw 18.15 4.88 Vw 18.73 4.73 Vw 19.15 4.63 Vw 20.76 4.27 Vw 21.22 4.18 Vs 21.68 4.10 W 22.58 3.94 Vw 22.96 3.87 S 23.26 3.82 w 24.52 3.63 Vw 25.03 3.56 Vw 25.44 3.50 Vw 25.82 3.45 Vw 26.24 3.39 Vw 26.56 3.35 Vw 29.14 3.06 Vw 29.45 3.03 Vw 30.79 2.90 Vw 31.45 2.84 Vw 31.72 2.82 Vw 33.04 2.71 Vw 33.60 2.67 Vw 34.22 2.62 Vw 36.28 2.47 Vw 37.14 2.42 Vw 38.50 2.34 Vw in which: Vs=very strong; S=strong; M=medium; Mw=medium weak; W=weak; Vw=very weak, and having a chemical composition, expressed as the anhydrous base in terms of moles of oxides, defined by the following general formula: XO 2 : aY 2 O 3 ; bM 2/n O in which X represents at least one tetravalent element, Y represents at least one trivalent element and M is an alkali metal and/or an alkaline-earth metal with valency n, a and b respectively representing the number of moles of Y 2 O 3 and M 2/n O; a is in the range 0 to 0.02 and b is in the range 0 to 1.