| 摘要 |
Catalysts suitable for hydrogenating organic compounds, essentially containing 65 to 80 % nickel calculated as nickel oxide, 10 to 25 % silicon calculated as silicon dioxide, 2 to 10 % zirconium calculated as zirconium oxide, 0 to 10 % aluminium calculated as aluminium oxide, with the proviso that the sum of the silicon dioxide and aluminium oxide contents is at least 15 %, with the percentages by weight in relation to the total mass of the catalyst, obtainable by the addition of an acid aqueous solution of nickel, ziconium and, if desired, aluminium salts to a basic aqueous solution or suspension of silicon compounds and, if desired, aluminium compounds, the pH of the mixture thus obtained being reduced to at least 6.5 and subsequently adjusted to 7 to 8 by the addition of a further basic solution, isolation of the solid thus precipitated, drying, shaping and calcinating, in addition a process for producing the catalysts and their use in the production of medicinal white oil, highly pure medicinal paraffins and low-boiling-point non-aromatic hydrocarbon mixtures.
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