DE712505C - Process for the splitting or pressure hydrogenation of carbonaceous substances - Google Patents

Description

Process for the splitting or pressure hydrogenation of carbonaceous substances It has been found that for the cleavage of hydrocarbon fillings or for pressure hydration Such catalysts or catalyst carriers are excellent for coal, tars and mineral oils are suitable by mixing calcium silicate with aluminum or magnesium salt solutions at elevated temperature, filtering off, washing and drying and optionally others Heating are made.

Proceeds in the manufacture of the catalysts or catalyst supports one such that one slurried in water calcium silicate z. B. by Made to.sammenbrimgen a water glass solution with a calcium salt solution is, at temperatures of e.g. B. 9o to 100 ° with an aluminum or magnesium salt solution mixed, separates the formed silicate from the liquid, washes and dries.

The SiO2 content in the finished catalyst can vary within wide limits. For example, a Si02 and A120 containing catalyst are given an Si02 content, which is between about 10 to 984 / o, expediently 3o to 98%. Good, results received one z. B. when splitting hydrocarbon oils with such catalysts, their SiO, content between 40 and about 70 or between about 8 and 96%. at Si02 and Mg0 containing catalysts is advantageously chosen Content of about 0.5 to 4oo'o Mg O.

Metal compounds present in the catalyst can be z. B. the aluminum compound, partially or completely by acid treatment again dissolve, z. B. by treating the finished catalyst with dilute hydrochloric acid, Sulfuric acid or nitric acid or treated with organic acids.

The catalyst produced in this way can also be used as a support for others catalytically active substances are used. You can do this during or after production other metal compounds are added in the moist or dried state. As such come z. B. Compounds of titanium, iron, nickel, cobalt, tungsten, Chromium, molybdenum, vanadium or manganese can be considered. The metals mentioned can be im finished catalyst z. B. be present as oxides or sulfides. plan can do it in one Add an amount of about 0.1 to about i 50; 'o. Boric acid can also be used in the above Quantities are added.

The catalyst can easily be revived after its use, because, unlike natural bleaching earth, high temperatures do not damage it. So you can use these catalysts at temperatures well above 500 ', z. B. up to 8oo ', e.g. B. heat with oxygen-containing gases. The revived catalyst can optionally be soaked with a metal salt solution and heated. ' Of the Catalyst is particularly suitable for the splitting of hydrocarbon oils and the splitting, flavoring or refining pressure hydrogenation of solid and liquid carbonaceous impacts, e.g. B. of carbons, mineral oils, tars, pressure hydrogenation products of any kind, extraction product; n of coals, liquid reduction products of carbon monoxide and their fractions, e.g. B. gasoline, medium oils or heavy oils.

Example 2.91 cg of crystallized magnesium chloride are dissolved in 2.91 of water, whereupon 1 kg of commercially available calcium silicate is added. : Ulan lets boil for a few hours while stirring, then filtered off and washed with water free of chlorine. The catalyst is dried at Zoo- and heated to about 750-.

The catalyst can also be prepared in the following way: by mixing i 1 waterglass solution of the spec. Weight 435 crystallized with a solution front 330- calcium chloride is precipitated calcium silicate, then it is filtered and gewasehen. It is then stirred into a solution of 6 kg of crystallized magnesium chloride in .11 water and the mixture is heated to about 90 for several hours. The silicate is filtered off, washed free of chlorine and dried at Zoo and then heated to 50%.

If gas oil is passed over these catalysts in a vaporous state at .16o ', this gives a product with 300.0 gasoline.

Claims (1)

PATENTAN SPRUCFI Process for the splitting or pressure hydrogenation of carbonaceous Substances in the presence of catalysts, characterized in that a catalyst is used or catalyst support is used, which is produced by mixing calcium silicate with aluminum or magnesium salt solutions at elevated temperature, filtering off, washing and drying and optionally «-eitergis heating is established.