固相配位化学反应研究(ⅩⅩⅤ)——草酸高铁与路易氏间碱的固相反应  

Solid State Reaction of Coordination Compounds (XXV) --The Solid State Reaction of Iron (Ⅲ) Oxalate and Lewis Base in Hydrogen and Helium Atmosphere

作　　者：袁进华[1] 忻新泉[1] 戴安邦[1] 张毓昌[2] 黄建平[2] Yuan Jinhua;Xin Xinquan;Dai Anbang;Zhang Yuchang;Huang Jianping(Nanjing University,Nanjing)

机构地区：[1]南京大学配位化学研究所 [2]南京大学物理系

出　　处：《高等学校化学学报》1988年第11期1095-1099,共5页Chemical Journal of Chinese Universities

基　　金：中国科学院基金;联合国教科文组织资助项目。

摘　　要：用气相色谱法研究了草酸铁(Ⅲ)与路易氏碱在氢气氛和氦气氛中的固相反应。结果表明草酸铁与氢氧化钠在室温下明显发生固相反应,其产物随温度升高而变化。同时发现α-Fe对草酸钠有催化分解作用,与四硫化钾低于220°C时发生固相反应,生成KFeS_(2),但只有1/4草酸铁参加了固相反应,反应不完全,对固相反应的机制及反应气氛的影响也进行了探讨。By use of non-isothermal technique in hydrogen and helium atmosphere the solid state reaction of iron(Ⅲ) oxalate and Lewis base was studied by gas chroma-tography accompanied by IR, XRD and Mossbauer spectroscopy. The results show that the solid state reaction of iron oxalate and potassium tetrasulfide starts at 200℃ and ends at 300℃, releasing CO_(2) and forming KFeS2 which is confirmed by Mossbauer spectra and XRD. The solid state reaction of iron (Ⅲ) oxalate and sodium hydroxide takes place at room temperature, which turns the reactant color to brown, resulting in the formation of alpha-Fe_(2)O_(3) and Fe(OH)_(3), with the rising of temperature the amount of alpha Fe_(2)O_(3) is increased due to the deaquation of Fe(OH)3, no CO_(2) is released around 180℃ indicating the entirely dissappearance of iron (Ⅲ) oxalate, which confirms the completion of the solid state reaction.

关 键 词：固相反应 草酸铁 气相色谱 路易氏碱 

分 类 号：TQ2[化学工程—有机化工]