用Na2HPO4与NaVO3和Na2WO4·12H2O合成Keggin型催化剂H3＋xPW12－xVxO40，并将H3＋xPW12－xVxO40、1-丁基-3-甲基咪唑溴离子液体混合，制备[Bmim]3＋xPW12－xVxO40，以SiO2为载体，制备负载型的杂多酸杂化分子材料催化剂[Bmim]3＋xPW12－xVxO40／SiO2，以H2O2为氧化剂，考察[Bmim]5PW10V2O40／SiO2对染料甲基橙的降解脱色性能。结果表明，催化剂在用量为0．10 g（50％）、H2 O2为5 mL、温度为60℃、pH为3对甲基橙（碱氮颜料）具有很好的降解效果，可达95．1％。并催化剂有很好的回收效果，可以多次重复使用。%The Keggin type H3+x PW12-x Vx O40 ( x =1 ~3 ) was synthesized by Na 2 HPO4 , NaVO3 and Na2WO4· 12H2 O as the stoichiometry ratio.The heteropolyacid hybrid materials [Bmim]3+x PW12 -x VxO40(x=1~3) was synthesized by reacting H3+xPW12 -xVxO40(x=1~3) and 1-butyl-3-methylimid-azolium bromide .The SiO2-supported [ Bmim] 3+x PW1 2-x Vx O40/SiO2 was prepared and used to oxidative degradation of methyl orange with the H 2 O2 as the oxidant and the experimental results show that the SiO2-supported [ Bmim] 5 PW10 V2 O40 catalyst with 50%loading exhibited an outstanding catalytic activi-ty.The result showed that H 2 O2 dosage of 5 mL,the amount of catalyst was 0.10 g,the reaction tempera-ture is 60 ℃,reaction pH is 3,in this condition,methyl orange ( alkali nitrogen pigment ) decolorization rate of 95.1%.The catalyst has good reusability can be reused many times ,and the degradation activity of methyl orange no significant decrease .
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