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本文用气相色谱法跟踪热分解气相产物,配合穆斯堡尔谱检测固相产物,研究了活性炭负载的草酸铁(Ⅲ)和三草酸合铁(Ⅲ)酸钾在H_2中的热分解过程,比较了与相应纯盐的异同。发现活性炭对负载的铁(Ⅲ)的草酸配合物的性质和热分解过程有很大的影响,使其分解起始温度低于纯盐,产物在载体表面高度分散,Fe(Ⅱ)的还原困难。研究结果表明,载体和金属离子、配体之间存在较强的相互作用,形成了区别于纯盐的载体表面配合物。
In this paper, the pyrolysis gas phase products were observed by gas chromatography, and the solid phase products were detected by Mossbauer spectroscopy. The thermal decomposition of iron (Ⅲ) oxalate and iron (Ⅲ) Compare the similarities and differences with the corresponding pure salt. It was found that the activated carbon had a great influence on the properties and thermal decomposition process of oxalate complexes supported on iron (Ⅲ). The decomposition temperature of activated carbon was lower than that of pure salt. The products were highly dispersed on the surface of supports and the reduction of Fe (Ⅱ) was difficult . The results show that there is a strong interaction between the support and the metal ions and ligand, forming a carrier surface complex different from the pure salt.