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用各种离子交换树脂为载体制备的载钯催化剂可用于对不饱和化合物的常温常压加氢。其加氢活性既与载体功能基的性质有关也与载体的物理特性有关。其中以孔度大、表面粗糙的树脂作载体利于底物与氢的扩散,加氢活性高。载体功能基要求与钯有一定的配位能力,同一功能基的配位原子数最好≤2。催化剂活性中心的价态对加氢活性也有影响,两种以上价态的钯比例适当协同作用时活性高。
Palladium catalysts prepared using various ion exchange resins as supports can be used for the hydrogenation of unsaturated compounds at room temperature and pressure. Its hydrogenation activity is related to both the nature of the functional group of the carrier and the physical properties of the carrier. Among them, the pore size, rough surface of the resin as a carrier conducive to the diffusion of hydrogen and substrate, high hydrogenation activity. The carrier functional group is required to have a certain coordination ability with palladium, and the number of coordination atoms of the same functional group is preferably ≦ 2. The valence of the active site of the catalyst also has an influence on the hydrogenation activity, and the activity of the palladium with two or more valence states is appropriately synergized.