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本文用气相色谱法、穆斯堡尔谱和红外光谱研究了硅胶、氧化铝和氧化镁负载的草酸铁(Ⅲ)和三草酸合铁(Ⅲ)酸钾的性质及在H_2中的热分解。结果表明,含氧载体对负载型配合物的影响涉及到载体表面配合物的热稳定性、热分解机理,分解产物、金属离子的还原和产物的分散度等各个方面,而且不同载体的影响也各不相同。红外光谱研究表明,由于载体表面与配体C_2O_4~的相互作用,在氧化铝和氧化镁表面形成一些新的载体表面配合物,故其热分解性质不同于纯盐。
In this paper, the properties of potassium oxalate and iron (III) oxalate supported on silica gel, alumina and magnesia and the thermal decomposition in H 2 were studied by gas chromatography, Mossbauer spectroscopy and infrared spectroscopy. The results show that the influence of oxygen carrier on the supported complex involves the thermal stability, thermal decomposition mechanism, decomposition products, the reduction of metal ions and the dispersion of the product, and the influence of different carriers is also Different. Infrared spectroscopy shows that due to the interaction between the surface of the support and the ligand C_2O_4 ~, some new surface complexes of the support are formed on the surface of alumina and magnesia, so the thermal decomposition properties are different from that of the pure salt.