摘要
用骤冷法研究FeCl3和Fe2Cl6与KCl的反应热力学，结果显示，在温度(638—788)K和压力(0．0011—0．0064)MPa范围内，KFeCl4是唯一气态配合物产物。反应(1／2)Fe2Cl6(g)+KCl(s)=KFeCl4(g)的热力学函数是△H^θm(298．15，KFeCl4，g)=(19．6±2．0)kJ·mol^-1，△S^θm(298．15，KFeCl4，g)=(-8．5±3．0)J·mol^-1·K^-1；反应FeCl3(g)+KCl(s)=KFeCl4(g)的热力学函数是△H^θm(298．15，KFeCl4，g)=(-56．9±2．0)kJ·mol^-1，△S^θm(298．15，KFeCl4，g)=(17．4±3．0)J·mol^-1·K^-1。
Thermodynamic properties of the vapour complex KFeCl4 have been studied by equilibrated quenching experiments. The results for the KCl-Fe2Cl6 and KCl-FeCl3 systems show that the KFeCl4 complex is the sole predominant vapour complex roughly at the temperature of (638-788) K and under pressure of (0. 001 1-0.0064) MPa. The results show ΔHm (298. 15, KFeCl4, g) = (19. 6 + 2. 0) kJ · mol-1 and ΔSm (298. 15, KFeCl4 , g) = -(8. 5 ± 3. 0) J · mol-1 · K-1 for the reaction (1/2)Fe2Cl6 (g) + KCl(s) = KFeCl4(g); ΔHm (298. 15, KFeCl4, g) =(-56. 9 ±2. 0) kJ · mol-1 and ΔSm (298. 15, KFeCl4, g) = (17. 4 + 3. 0) J · mol-1 · K-1 for the reaction FeCl3 (g) +KCl(s) =KFeCl4 (g).
出处
《科学技术与工程》
2004年第12期1003-1005,1012,共4页
Science Technology and Engineering
基金
国家自然科学基金(50274027)资助
