某些有机铵十聚钨酸盐的制备和催化性质

Preparation and Catalytic Properties of Some Organoammonium Decatungstates

制备四乙基铵、二异丙铵和六氢吡啶十聚钨酸盐 ,通过元素分析、红外吸收光谱和热分析 ,对这 3种有机铵十聚钨盐进行表征 .在 3种有机铵十聚钨酸盐的环已烷光催化氧化反应中 ,环已醇和环已酮为主要产物 ,其中 [(C2 H5) 4 N]4W10 O3 2 和 [(C5H10 NH2 ]4W10 O3 2 对环已酮的选择性优于环已醇 ,而 { [(CH3 ) 2 CH]2 NH2 } 4 W10 O3 2 对环己醇的选择性则优于环己酮 .

Some organoammonium decatungstates may serve as photocatalysts for the oxidation of alkanes. Among them, tetraethylammonium, diisopropylammonium and piperidine decatungstates are prepared; and they are characterized by element analyse, infrared spectra and thermal analyse. The oxidation reaction of cyclohexane under their photocatalysis give rise to cyclohexanol and cyclohexanone as main products. The former two decatungstates present a good selectivity for the cyclohexanone formation, with the latter one shows a good selectivity for the cyclohexanol formation.