method for preparation of a nikkelkatalysator medium and method for implementing a hydrogenation reaction under application of thus prepared catalyst.

摘要

1367088 Nickel hydrogenation catalysts UNILEVER Ltd 17 Dec 1971 [21 Dec 1970] 60499/70 Heading B1E [Also in Divisions C2 and C5] In a process for preparing a supported nickel catalyst by alkaline precipitation in which precipitation occurs by mixing an aqueous solution of a nickel salt, an aqueous solution of an alkali metal carbonate and a support material, throughout the precipitation a suspension is formed with a temperature in the range 75‹C to 95‹C and a pH of 8 to 10 and the suspension is separated after precipitation. The wet cake may then be dried and activated with hydrogen. In examples a suspension of kieselguhr in nickel sulphate solution and a solution of sodium carbonate are continuously pumped into a stirred vessel at rates adjusted to keep temperature and pH constant; in one example nickel chloride replaces the sulphate and in another, potassium carbonate replaces sodium carbonate. The catalyst is used for reduction of benzene, phenol, and fatty acid nitriles, and the conversion of carbon monoxide to methane.