以Al3+/(Al3++Mg2+)摩尔比为0.2的水滑石(HT)为载体,采用还原浸渍法制备了负载型Pd-Ce-B/HT催化剂,并将其应用于液相苯酚选择性加氢制环己酮. 与Pd-Ce-B/Al2O3, Pd-Ce-B/MgO和Pd-Ce-B/SiO2相比, Pd-Ce-B/HT催化剂具有高活性和高环己酮选择性. 5.8%Pd-Ce-B/HT上苯酚的转化率和环己酮的选择性分别达82.0%和80.3%, 显示了其潜在的工业化应用前景. 根据多种表征结果,初步讨论了催化剂的构效关系以及添加剂Ce3+和载体酸碱性对催化性能的促进作用.
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