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研究了γ－Al2O3负载的Co／γ－Al2O3催化剂上肉桂醛的选择加氢反应．反应结果表明，以CoCl2作为前驱物的Co／γ－Al2O3催化剂的选择性要高于以Co（NO3）2作为前驱物的Co／γ－Al2O3催化剂，而活性则正好相反．当钴的负载量小于9％时，随着钴负载量的增加，催化剂的活性和选择性随之增加，当钴的负载量大于9％时，随着钴负载量的增加，Co／γ－Al2O3催化剂的活性略有增加，而生成肉桂醇的选择性变化也很小，认为9％的钴负载量是催化剂反应活性和选择性的一个阈值．在所选定的范围内，反应温度和压力对肉桂醛加氢的选择性几乎没有影响．
The selective hydrogenation of cinnamaldehyde on a γ-Al2O3 supported Co / γ-Al2O3 catalyst was investigated. The reaction results show that the selectivity of Co / γ-Al2O3 catalyst using CoCl2 as precursor is higher than that of Co / γ-Al2O3 catalyst using Co (NO3) 2 as precursor, and the activity is the opposite. When the cobalt loading is less than 9%, the activity and selectivity of the catalyst increase with the increase of the cobalt loading. When the loading of cobalt is more than 9%, with the increase of cobalt loading, the Co / γ- The activity of Al 2 O 3 catalyst slightly increased, and the selectivity of cinnamyl alcohol was also very small. It is considered that the 9% cobalt loading is a threshold of catalyst reactivity and selectivity. Within the selected range, the reaction temperature and pressure have almost no effect on the selectivity of cinnamic aldehyde hydrogenation.