Keggin结构稀土钼钒磷四元杂多配合物的合成、表征及苯酚羟化制苯二酚的催化活性

Synthesis, Characterization and Catalytic Activity for Phenol Hydroxylation of Rare Earth Molybdovanadophosphate Tetrabasic Heteropoly Complexes with Keggin Structure

合成了 5种通式为 ( NH4) 1 5 [RE( PMo9V2 O39) 2 ]· x H2 O( RE=La3+ ,Ce3+ ,Gd3+ ,Y3+ ,Yb3+ )的稀土钼钒磷四元杂多配合物 ,并用 IR,UV,XRD,ICP,TG-DTA和 CV等手段对其结构和性能进行了表征 .催化活性实验表明 。

Five rare earth molybdovanadophosphate heteropoly complexes were synthesized. Their general molecular formulas are (NH 4) 15 [RE(PMo 9V 2O 39 ) 2]·xH 2O(RE=La 3+ , Ce 3+ , Gd 3+ , Y 3+ , Yb 3+ ). Their structures and properties were investigated by IR, UV, XRD, ICP, TG DTA, and cyclic voltammogram. The results show that these five complexes have the same Keggin structure and excellent catalytic activity for phenol hydroxylation with H 2O 2 to diphenol.