| 摘要 |
The catalyst can be prepared by reduction of a precursor of a hydrogenation-active metal, which may be present on an oxidic support, by reaction with at least one compound of the formula (I) <?in-line-formulae description="In-line Formulae" end="lead"?>H<SUB>n</SUB>M(OR)<SUB>3-n</SUB> (I) <?in-line-formulae description="In-line Formulae" end="tail"?> where M is Ga or Al, R is CR'<SUB>3 </SUB>or SiR'<SUB>3 </SUB>where R' is C<SUB>1-20</SUB>-alkyl, and n is 1 or 2, or dimers or oligomers thereof, wherein the crystallite size of the hydrogenation-active metal in the finished catalyst is from 5 to 30, preferably 5 to 15 nm.
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