钯、铱单取代十二钼磷酸盐的制备及性质的研究  

Synthesis and Properties of mono Palladium?and Iridium? Substituted Dodecamolybdophosphate

作　　者：刘惠章[1] 许静玉[1] 孙文梁[2] 林欣荣[1] 金松林[1] 谢高阳[1] 

机构地区：[1]复旦大学化学系,上海200433 [2]华东师范大学化学系,上海200333

出　　处：《无机化学学报》2000年第2期310-313,共4页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金! (No .2 98410 0 1)

摘　　要：本文报道了Pd 、Ir 　取代的十二钼磷酸四丁基铵盐 (α (n Bu4 N) 5[PMo11Pd(OH2 )O39]、α (n Bu4 N) 3[PMo11Ir(OH2 )O39])的制备方法。IR、UV及31P NMR证实产物仍保持Keggin结构 ,并有一个Mo 为Pd 、Ir 所取代。电化学上 ,Ir 取代化合物存在三个清晰的多酸骨架氧化 还原峰而Pd 取代化合物由于电极吸附作用使它的氧化 还原峰无法被观察到。在两个取代化合物的烯烃催化氧化中醇、酮为主要产物。　值得注意的是 ,PdThe palladium and iridium substituted dodecamolybdophosphates with the general formula(Bu 4N) n[PMo 11 M(OH 2)O 39 ] have been prepared and characterized by IR, UV and 31 P NMR. The cyclic voltammetry measurement in acetonitrile solution revealed that the iridium substituted compounds displayed three reversible framework redox couples, however, no obvious redox peak was found for the palladium derivative, as a result of its strong adsorption on the surface of the electrod. Both substituted compounds served as bifunctional catalysts in the cyclohexene oxidation reaction by molecular oxygen. The main products were cyclohexen 2 ol and cyclohexene 2 one for the iridium substituted compounds, but cyclohexen 2 ol and phenyl ol instead for the palladium derivative.

关 键 词：十二钼磷酸盐 催化剂 烯烃催化氧化 钯 铱 

分 类 号：O614.82[理学—无机化学] TQ426.91[理学—化学]