采用浸渍法制备了RuO2/γ-Al2O3和RuO2/CeO2/γ-Al2O3催化剂,并利用XRD、sEM和XPS对催化剂进行了表征,研究了Ce的加人对RuO2/γ-Al2O3催化剂表面分散性和催化剂表面元素Ru,O和Ce化学态的影响,同时考察了RuO2/γ-Al2O3和RuO2/CeO2/γ-Al2O3催化剂湿式氧化降解苯酚的活性,并深入探讨了Ce对RuO2/γ-Al2O3催化剂的助催化作用.结果表明:Ce掺杂改性后,使催化剂表面Ru的化学态降低、表面氧空位增加,并且活性组分Ru的分散性增加,从而使RuO2/CeO2/γ-Al2O3催化剂的活性提高,因此Ce起到了显著的助催化作用.
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