%0 Journal Article
%T <br>
%A 宿玲弟
%A 王文慧
%A 童金辉
%A 薄丽丽
%A 马文梅
%A 马青
%J 物理化学学报
%D 2016
%R 10.3866/PKU.WHXB201609181
%X 制备了V取代的磷钼酸H3+xPMo12-xVxO40（x=0，1，2）及1-丁基-3-甲基咪唑溴盐离子液体（[C4mim]Br），并采用离子交换的方法制备了系列杂化材料（[C4mim]3+xPMo12-xVxO40，x=0，1，2）；采用X射线衍射（XRD）、傅里叶变换红外光谱（FT-IR）、紫外-可见漫反射光谱（UV-Vis DRS）对所制备样品进行了表征；以H2O2为氧化剂，考察了所得样品催化苯羟基化制苯酚的活性。结果表明，和相应的离子液体及杂多酸相比，杂化材料的催化活性得到了很大的提高，尤其是催化剂[C4mim]5PMo10V2O40，在优化后的条件下，苯的转化率可达到21%，苯酚的选择性在99%以上。而且，该催化剂具有很好的可重复使用性，连续使用五次后，苯的转化率和苯酚的选择性没有明显降低。<br>Aseriesof hybridmaterials ([C4mim]3+xPMo12-xVxO40, x=0, 1, 2)basedonV-substitutedphosphomolybdic acidH3+xPMo12-xVxO40 (x=0, 1, 2) and ionic liquid 1-butyl-3-methyl imidazolium bromide ([C4mim]Br) have been prepared by an anion-exchange method. The samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectrophotometry (FT-IR) and UV-Vis diffuse reflectance spectra (UV-Vis DRS) analysis. The catalytic performances of the samples were tested in oxidation of benzene to produce phenol using H2O2 as the oxidant. The results showed that the hybrids[C4mim]3+xPMo12-xVxO40 exhibit much higher catalytic properties than both the corresponding moieties. In particular, under the optimized conditions, 21% of benzene conversion and 99%selectivity for phenol have been obtained with[C4mim]5PMo10V2O40. The sample also exhibits good reusability and was reused five times without a significant decrease in conversion and selectivity
%U http://www.whxb.pku.edu.cn/CN/Y2016/V32/I12/2961