Verfahren zur Hydrierung ungesättigter Kohlenwasserstoffe oder Kohlenwasserstoffgemische

摘要

Unsaturated hydrocarbons or hydrocarbon mixtures are hydrogenated under hydrogen pressure at elevated temperature in the presence of a catalyst comprising a carrier which consists of Al2O3 or of a major proportion of Al2O3 together with another non-acidic carrier material, and a combination of at least one sulphide of tungsten and/or molybdenum and/or rhenium and at least one sulphide of a metal or metals of Group VIII of the Periodic Table, which catalyst during and/or after the convertion of the metal components into sulphides has been treated with hydrochloric acid on precursor therefor. Suitable starting material hydrocarbons are amide benzene and petroleum fractions e.g. boiling in the gasoline, kerosene, gas oil and lubricating oil ranges. Examples describe the hydrogenation of (1) benzene to cyclohexane and (2) kerosene to unspecified products.ALSO:Hydrogenation catalysts are made by drying, calcining and sulphiding particles of Al2O3 or a mixture of a major proportion of Al2O3 and another non-acidic carrier material, supporting Mo and/or W and/or Re and/or at least one oxide of at least one of these metals and at least one of the metals of Group VIII of the Periodic Table and/or at least one oxide of at least one of these latter metals, such that during and/or after sulphidation a gas comprising hydrochloric acid and/or a compound which forms hydrochloric acid under the conditions obtaining is passed over the catalyst, e.g. at a temperature above 200 DEG C. The support may be g -Al2O3 of 0.3 mm. particle size or SiO2-Al2O3. The catalyst may be activated with an alkylchloride.