Crystalline silicates and hydrocarbon-conversion processes employing same

Claim 1

A process for the preparation of aromatic hydrocarbons which comprises contacting as feed at least one acyclic organic compound or a mixture of substantially acyclic organic compounds with shaped catalyst particles comprising from about 0-90% w of binder material and 10-100% w of crystalline silicates, which silicates are characterized in that: (a) they are thermally stable up to temperatures above 600° C.; (b) after dehydration in vacuum at 400° C. they are capable of absorbing more than 3% w water at 25° C. and saturated water vapor 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/n O.[a Fe 2 O 3 .b Al 2 O 3 .c Ga 2 O 3 ].y(d SiO 2 .e GeO 2 ), where R=one or more monovalent or bivalent cations introduced during preparation of said silicates and selected from the group consisting of alkaline metals, alkaline earth metals and organic cations obtained from primary, secondary and tertiary alkylamines and quaternary ammonium compounds; a>0.5 b≧0; c≧0; a+b+c=1; y=10 to 300 d≧0.1; e≧0; d+e=1, n is the valency of R; and their X-ray diffraction patterns include, inter alia, the reflections given in Table A of this specification.