| abstract |
The present invention relates to zeolite silicone aluminate catalysts of the zeolite type Si / 0.0012-0.0050 / A of the type zeolite, crystalline porous structure having a surface area of 344 m2 / g to 500 m2 / g, where y is 2 , 0018 to 2,0075, which are particularly suitable for the alkylation of four-carbon hydrocarbons, olefins and / or saturated hydrocarbons for the preparation of high-octane hydrocarbons. The process according to the invention is characterized in that a silicon derivative, namely silica gel, tetraethylorthosilicate or tetramethyl orthosilicate, in the form of an aqueous or aqueous-alcoholic solution with an aluminum derivative, namely aluminum nitrate or sodium aluminate, and tetrapropylammonium hydroxide tetraethylate as crystalline lattice material. ammonium hydroxide is reacted with one of tetrabutylammonium hydroxide and triethanolamine, optionally with the addition of an inorganic base or minerals such as NaOH or KBr, the product obtained is crystallized in a closed space for 6-26-18 days at 150-198 ° C. calcined, preferably at 650 ° C and for 26 hours, then preferably with distilled water, and finally calcined again in air, preferably at 550 ° C and for 6 hours. 182591 FigJ 15 20 25 1 -1- |