Crystalline silicates

Details Crystalline silicates Crystalline silicates

C - Chemistry, Metallurgy

01

B

260/675, 252/1.G

C01B 33/20 (2006.01) B01D 53/02 (2006.01) B01D 53/28 (2006.01) B01J 29/04 (2006.01) B01J 29/88 (2006.01) B01J 39/08 (2006.01) C01B 33/26 (2006.01) C07C 1/04 (2006.01) C07C 1/20 (2006.01) C07C 2/76 (2006.01) C07C 2/86 (2006.01) C07C 5/27 (2006.01) C07C 5/41 (2006.01) C07C 6/12 (2006.01) C07C 7/13 (2006.01) C07C 15/00 (2006.01) C10G 3/00 (2006.01) C10G 35/06 (2006.01) C10G 45/64 (2006.01) C10G 45/68 (2006.01)

Patent

CA 1123412

ABSTRACT OF THE DISCLOSURE Novel crystalline ferro silicates characterized in that a) they are thermally stable up to temperatures above 600 C; b) after dehydration in vacuo at 400°C they are capable of adsorbing more than 3 %w water at 25°C and saturated water vapour pressure; and c) in the dehydrated form they have the following overall composition, in terms of moles of the oxides: (1.0 ? 0.3)(R)2/nO. [a Fe2O3. b A12O3 . c Ga2O3]. y (d SiO2. e GeO2), where R = one or more monovalent or bivalent cations; a ? 0.1; b ?O; c ?O; a + b + c = 1; y ?10; d ?0.1; e ?O; d + e = 1; and n is the valency of R, their preparation and use especially as adsorbing and extracting agents, as drying agent as ion exchanger and as catalyst or cata- lyst carrier for various catalytic processes, in particular for the ca lytic preparation of aromatic hydrocarbons.

291509

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