P-Cu-Mo杂多阴离子柱撑水滑石的制备

杂多阴离子柱撑水滑石作为一类新型的催化材料,近年来日益受到人们的关注。但由于杂多化合物对碱不稳定及水滑石在酸性条件下层结构易被破环,故文献中仅有制得钨硅系杂多阴离子柱水滑石的报道。作者将过渡金属引入钼磷酸的Keggin结构骨架中,提高了其溶液稳定性,并在微波场中快速地制得了P-Cu-Mo杂多阴离子柱撑水滑石。

Preparation of Pillared Hydrotalcite with PCuMo_(11) Heteropolyanion

The transition-metal ion was introduced into the Keggin structure in terms of the degradation of heteropoly acid. The compound was intercalated into the layered region of the hy-drotalcitelikeZn,Al(NO-3)] in the microwave field. It is the first time to prepare the hydrotal-cite pillared with PCuMo113- heteropolyanion. The product possesses a regular layered structure and a good crystallinity. The NO3- ion existing in the layered region was substituted completely by heteropolyanion. The heteropoly compound intercalated in the layered region of hydrotalcite still has a strong ESR signal. The experiment results show that Cu with C4v symmetry distributes uniformly in the Keggin structure and exists in a cubic cone field with pentadentate.