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新型杂多配合物的合成是杂多酸型催化剂基础研究的重要方面。过渡金属取代12-系列杂多配合物中的钨而形成的三元杂多配合物,基本保持原来的Keggin结构,具有优异的催化活性。但过渡金属11-钨铬酸钾至今未见文献报道。我们用改进的方法首次合成出K_n[Z·(H_2O)CrW_(11)O_(39)]·xH_2O(Z=Fe~(3+)、Co~(2+)、Ni~(2+)、Zn~(2+))。通过化学分析、离子交换、红外光谱、紫外光谱、X-光电子能谱等对合成产物进行了鉴定。
The synthesis of novel heteropoly complexes is an important aspect of basic research on heteropoly acid catalysts. The ternary heteropoly complexes formed by replacing the tungsten in the 12-series heteropoly complexes by transition metal have basically the same Keggin structure and excellent catalytic activity. However, transition metal 11-potassium tungsten chromic acid has not been reported in the literature. We synthesized K_n [Z · (H_2O) CrW_ (11) O_ (39)] · xH_2O (Z = Fe ~ (3 +), Co_2 +, Ni 2+ by the improved method for the first time. Zn 2+). The synthesized products were identified by chemical analysis, ion exchange, IR, UV, X-ray photoelectron spectroscopy.