【摘要】 用气相色谱跟踪分析铁（Ⅱ）、铁（Ⅲ）草酸盐在氮气中热分解的气相产物,并以Mossbauer谱测定其固相产物,得知FeC₂O₄·2H₂O在240℃以前脱水,同时发生相变,在240～360℃放出CO和CO₂,在400℃以上放出CH₄和H₂O,最终固相产物为α-Fe.Fe₂（C₂O₄）₃5H₂O在240℃以前脱水和放CO₂同时进行,在240～380℃放出CO,CO₂,CH₄和H₂O, 400℃以上放出CH₄和H₂O,最终固相产物为α-Fe和Fe₃C.更多还原

【Abstract】 Valuable information about decomposition of Fe（Ⅱ） and Fe（Ⅲ） oxalates in H; has been obtained to discern gas products by gas chromatography and to assign the structure of the solid products by Mossbauer spectroscopy as a fingerprint technique. For FeC₂O₄·2H₂O, there is a crystal phase conversion process below 240℃ and a formation of CO, CO₂ and a little H₂O at the temperature from 240℃ to 360℃The difference of quadrupole splitting between α-FeC₂O₄ and β-FeC2O4 has been explained in terms of the point charge model. α-FeC₂O₄ is more stable than β-FeC₂O₄. When Fe₂ （C₂O₄） 3 ·5H₂O decompose in H₂, only α-FeC₂O₄ is formed as a solid product at 240℃, and at higher temperatures, CO, CO₂, CH₄, H₂O and a little C₂ are formed. Above 380℃both FeC₂O₄ and Fe₂（C₂O₄）₃ produce CH₄ and H₂O and the final solid product consists of α-Fe for the former and α-Fe, Fe₃C for the latter.更多还原