铁卟啉/钒取代杂多酸新型催化剂的合成、表征和性能研究

文章以水溶性碘化四对(4-三甲氨基苯基)铁卟啉和钒取代杂多酸H5PMo10V2O40为原料，采用离子交换方法在水溶液中合成了一种铁卟啉/钒取代杂多酸新型无机-有机复合催化剂，并使用红外和紫外光谱技术对其结构进行了表征，结果表明，这种新型复合催化剂仍然保持着卟啉的大环共轭结构和杂多酸的笼状多电子结构。同时研究了以30%过氧化氢水溶液为绿色氧化剂，初步探讨了这种铁卟啉杂多酸催化剂对苯的羟基化反应的的影响，考察了催化剂的催化活性。催化氧化实验表明，制备的铁卟啉/杂多酸配合物可用作苯直接氧化羟基化成苯酚的催化剂，并且表现出较高的催化活性。

New Iron-Porphyrin/Vanadium-Substituted Polyoxometalate Catalyst:Synthesis, Characterization and Catalytic Activity

A new kind of iron-porphyrin/vanadium-substituted polyoxometalate coordination compound was synthesized by the ion exchange reaction of FeTTMAPPI and H5 PMo10 V2O40 in solution. The new catalyst was characterized by IR spectrometry and UV-Vis spectrometry. As an excellent catalyst, its effects on benzene hydroxylation and catalytic capabilities were studied with H2O2 solution as the oxidant. The results indicated that the products contained the conjugated structure of porphyrin and the cage structure of polyoxometalate, the V atom in polyoxometalate is the main centre of catalytic activity, meanwhile the presence of iron-porphyrin could increase its catalytic activity greatly.