Patent ID: 6921524

Claim:
A crystalline solid IM-10 with an X ray diffraction diagram including at least the peaks listed in the table below: d hkl (Å) 2theta (degrees) I/I 0 14.18 6.23 vw 8.67 10.19 VS 7.07 12.50 vw 6.55 13.50 S 6.44 13.73 vw 5.87 15.09 vw 4.76 18.60 mw 4.55 19.47 vw 4.03 22.02 m 3.91 22.69 mw 3.83 23.20 vw 3.74 23.77 vw 3.69 24.04 w 3.54 25.12 w 3.30 26.93 vw 3.28 27.18 vw 3.22 27.68 vw 3.10 28.74 vw 3.08 28.92 vw 2.97 30.00 vw 2.93 30.46 vw 2.89 30.92 vw 2.88 31.03 vw 2.87 31.17 w 2.80 31.98 vw 2.75 32.47 vw 2.67 33.56 vw 2.52 35.64 vw 2.49 36.03 vw 2.48 36.20 vw 2.44 36.79 vw 2.43 36.98 vw 2.38 37.72 w 2.36 38.07 vw 2.34 38.31 vw in which VS=very strong; m=medium; w=weak; S=strong; mw=medium weak; vw=very weak, and having a chemical composition, expressed as the anhydrous base in terms of the moles of oxides, defined by the following general formula: XO 2 :mYO 2 :pZ 2 O 3 :qR 2/n O:sF (I), in which R represents one or more cation(s) with valency n, X represents one or more tetravalent element(s) other than germanium, Y represents germanium, Z represents at least one trivalent element and F is fluorine, m, p, q, s respectively representing the number of moles of YO 2 , Z 2 O 3 , R 2/n O and F and m is in the range 0.1 to 4, p is in the range 0 to 0.5, q and s are in the range 0.01 to 0.7, the ratio {(1+m)/p} being 5 or more.