| 摘要 |
A supported nickel-based catalyst containing 10-85% by weight of nickel, of which 40-99% is in the form of the metal, 0.05-6.7% by weight of boron, and, optionally, 0.1-10% by weight of Cu, Ag, Cr, Zr, Th, Sn, Re or one of the group VIII metals. The catalyst is prepared by a method in which nickel dihydroxide and/or nickel hydroxide carbonate, which have been obtained by precipitating a nickel salt with an alkali, are subjected to the action of an alkaline borohydride solution at 20-100 DEG C and pH higher than 10 over a period of 5-60 min. The catalyst mass is then washed, dried, calcined at 300-500 DEG C and finally reduced at 250-480 DEG C to a degree of reduction of 0.40-0.99. The catalyst is useful in the hydrogenation of polyunsaturated organic compounds to the corresponding partly or completely saturated compounds, particularly the hydrogenation of unsaturated fatty acids and their glycerides to the corresponding partly or completely saturated compounds. |
