Novel crystalline (metallo) silicates and germanates

Claim 2

A crystalline material having, in the dehydrated form, the empirical formula: m(M.sub.2/a O):X.sub.z O.sub.xz/2 :.sub.y YO.sub.2 (I) in which m is 0.5 to 1.5;M is a cation of valency a; X is a metal of valency x, selected from aluminium, boron, gallium, zinc, iron and titanium; z is 2 when x is an odd number, and z is 1 when x is an even number; y is at least 5; and Y is silicon or germanium; and having, in the calcined hydrogen form, an X-ray diffraction pattern including the following significant peaks: ______________________________________ d(Å) I ______________________________________ 11.4 ± 0.3 S 9.5 ± 0.3 S 7.1 ± 0.2 W/M 7.0 ± 0.2 S 5.8 ± 0.15 M 5.4 ± 0.15 S 4.8 ± 0.1 M 4.0 ± 0.1 M/S 3.8 ± 0.1 VS 3.6 ± 0.1 S 3.5 ± 0.1 M 3.1 ± 0.1 S 3.05 ± 0.1 W ______________________________________ wherein VS=60-140, S=40-60, M-20-40, W=0.20.

Claim 3

A material as claimed in claim 1, in which X is aluminium.

Claim 4

A material as claimed in claim 1, in which Y is silicon.

Claim 5

A material as claimed in claim 1, in the calcined hydrogen form.

Claim 6

A process for the preparation of a material as claimed in claim 1 which comprises reacting together under aqueous alkaline conditions a source of oxide YO 2 ; water, quinuclidine or its precursor or reaction product; and tetraethylammonium hydroxide or halide or its precursor or reaction product; and optionally, a source of oxide X z O xz/2 and a source of M(OH)a; the reaction conditions being selected and maintained such as to produce a crystalline material having, in the dehydrated form, the empirical formula: m(M.sub.2/a O):X.sub.z O.sub.xz/2 :.sub.y YO.sub.2 (I) in which m is 0.5 to 1.5; M is a cation of valency a; X is a metal of valency x, selected from aluminium, boron, gallium, zinc, iron and titanium; z is 2 when x is an odd number, and z is 1 when x is an even number; y is at least 5; and Y is silicon or germanium; and having, in the calcined hydrogen form, an X-ray diffraction pattern including the following significant peaks: ______________________________________ d(Å) I ______________________________________ 11.4 ± 0.3 S 9.5 ± 0.3 S 7.1 ± 0.2 W/M 7.0 ± 0.2 S 5.8 ± 0.15 M 5.4 ± 0.15 S 4.8 ± 0.1 M 4.0 ± 0.1 M/S 3.8 ± 0.1 VS 3.6 ± 0.1 S 3.5 ± 0.1 M 3.1 ± 0.1 S 3.05 ± 0.1 W ______________________________________ wherein VS=60-140, S=40-60, M-20-40, W=0.20.

Claim 7

A process as claimed in claim 5, in which the reaction mixture has components in the following molar ratios: YO 2 /X 2 O xz/2 =at least 10; quinuclidine or derivative/tetraethylammonium compound=0.1 to 3.0; H 2 O/YO 2 =4 to 500; OH - /H 2 O=less than 0.04; quinuclidene or derivative plus tetraethylammonium compound/YO 2 =0.01 to 2.0.

Claim 8

A process as claimed in claim 6, in which the reaction mixture has components in the following molar ratios: YO 2 /X 2 O xz/2 =10 to 80; quinuclidine or derivative/tetraethylammonium compound=0.5 to 2.0; H 2 O/YO 2 =5 to 200; OH - /H 2 O=less than 0.02; quinuclidine or derivative plus tetraethylammonium compound/YO 2 =0.01 to 1.0.

Claim 9

A process as claimed in claim 5, in which the reaction mixture also includes methanol.