【摘要】 以Dawson结构的磷钼钒杂多酸为催化剂、质量分数为30%的H2O2为氧化剂,研究环己烷的催化氧化反应.考察了钒含量、温度、催化剂用量、过氧化氢用量及反应时间对环己烷氧化反应的影响,并将其结果与以相应的Keggin结构磷钼钒杂多酸为催化剂时得到的结果进行比较,表明在相同反应条件下,Dawson结构的磷钼钒酸的催化活性明显高于相应的Keggin结构的磷钼钒酸的催化活性.更多还原

【Abstract】 A series of Dawson-type vanadium-substituted heteropoly acids was synthesized successfully.These compounds show an excellent activity for the oxidation of cyclohexane with 30% H 2O 2 as oxidant.The reaction conditions,such as the number of the vanadium atom substituted in the heteropolyacids,amount of the catalyst,temperature,amount of H 2O 2 and reaction time were investigated in detail.The research results reveal that Dawson-type molybdovanadophosphoric heteropolyacids exhibit better activities for the oxidation of cyclohexane compareable to Keggin-type molybdovanadophosphoric heteropolyacids.更多还原