Hybrid Polyoxotungstates as Functional Comonomers in New Cross-Linked Catalytic Polymers for Sustainable Oxidation with Hydrogen Peroxide
作者:Mauro Carraro、Giulia Fiorani、Lorenzo Mognon、Francesca Caneva、Martino Gardan、Chiara Maccato、Marcella Bonchio
DOI:10.1002/chem.201201849
日期:2012.10.8
Anchoring terminal octenyl tails on molecular polyoxotungstates yield polymerizable organic–inorganic monomers with formula [CH2CH(CH2)6Si}xOySiWwOz]4− [x=2, w=11, y=1, z=39 (1); x=2, w=10, y=1, z=36 (2); and x=4, w=9, y=3, z=34 (3)]. These molecular hybrids can use aqueous hydrogen peroxide to catalyze the selective oxidation of organic sulfides in CH3CN. Copolymerization of 1–3 with methyl methacrylate
分子polyoxotungstates锚固终端辛烯基尾部产生可聚合的有机-无机单体与式[CH 2 CH(CH 2)6的Si} X ö ý硅钨酸瓦特ö ž ] 4- [ X = 2,瓦特= 11,ÿ = 1 ,z = 39(1); x = 2,w = 10,y = 1,z = 36(2);和x = 4,w = 9,y = 3,z = 34(3)]。这些分子杂化物可以使用过氧化氢水溶液来催化CH 3 CN中有机硫化物的选择性氧化。的共聚1 - 3与甲基丙烯酸甲酯和乙二醇二甲基丙烯酸酯导致的多孔材料与所述官能单体的均匀分布,通过会聚从FTIR光谱和电子显微术证据所指示的。催化聚合物激活了过氧化氢以进行氧气转移,这是通过对甲基对甲苯基硫醚的定量和选择性氧化来证明的,将其筛选为模型底物。含单体2的杂化材料也在n中进行了测试辛烷值,以评估其氧化和去除众所周知的汽油污染物二苯并噻吩的潜力。