镱钼钒磷四元杂多化合物催化苯酚羟化反应的研究  

Study on Catalytic Reaction of Molybodovandl Phosphoric Tetrabasic Heteropoly Compound Containing Ytterbium in Phenol Hydroxylation with Hydrogen Peroxide

作　　者：郑瑛[1] 王世铭[1] 余雅琴[1] 陈丽娟[1] 

机构地区：[1]福建师范大学化学系,福州350007

出　　处：《化学通报》2001年第9期583-585,546,共4页Chemistry

基　　金：福建省科委资助项目 (K990 17)

摘　　要：合成了具有Keggin结构镱钼钒磷杂多化合物 ,用IR、UV、XRD、ICP等手段对其结构进行了表征。并研究了该杂多化合物对苯酚过氧化氢羟化反应的催化活性。实验结果表明 :以甲醇为溶剂 ,用镱钼钒磷杂多化合物为催化剂 ,当n(phOH)∶n(H2 O2 ) =1∶2 ,反应体系的pH =5.0 ,反应时间 4h ,苯酚转化率为 4 1 66% ,对苯二酚产率可达到 4 0 .2 4 %。The Keggin type of molybodovandlphosphoric tetrbasic heteropoly compound containing ytterbium was synthesized.The heteropoly compound was characterized by the use of IR,ICP,UV and XRD.The catalytic activity of the heteropoly compound in homogeneous phenol hydroxylation was studied. The results showed that the conversion of phenol was 41.66%,and the yield of paradioxybenzene was 40.24% under the reaction conditions:methanol as solvent,the heteropoly compound as the catalyst, phenol/H 2O 2 (molar ratio)was 1∶2,pH value was 5.0,and reaction time was 4 h.

关 键 词：镱钼钒磷四元杂多化合物 苯酚 催化羟化 苯二酚 催化剂 催化活性 

分 类 号：O621[理学—有机化学]