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Pt/Al_2O_3催化剂经氢还原后,是否存在难于还原的铂离子(或称可溶性铂)已争论很久。Mchenry等首先提到Pt/Al_2O_3催化剂的活性与其中存在可溶性铂有关。它是一种难还原的由氯铂酸与Al_2O_3相互作用生成的稳定络合物。后经实验证实,并推测可溶性铂位于Al_2O_3晶体中的阳离子缺陷处。
After Pt / Al 2 O 3 catalyst is reduced by hydrogen, the existence of platinum ions that are difficult to reduce (or soluble platinum) has been debated for a long time. Mchenry et al. First mentioned that the Pt / Al 2 O 3 catalyst activity is related to the presence of soluble platinum. It is a non-reduced stable complex formed by the interaction of chloroplatinic acid with Al 2 O 3. After the experiment confirmed that, and speculated that soluble platinum in Al 2 O 3 crystals in the cationic defects Department.