抗坏血酸钙配合物的热化学研究  

Thermochemical study on the complex of Ca(Ⅱ) with ascorbic acid

作　　者：屈景年[1] 刘义[2] 刘梦琴[1] 莫运春[1] 屈松生[2] 

机构地区：[1]衡阳师范学院化学与材料科学系,湖南衡阳421008 [2]武汉大学化学与分子科学学院,湖北武汉430072

出　　处：《化学研究与应用》2006年第3期288-291,共4页Chemical Research and Application

基　　金：湖南省教育厅资助项目(03C091)

摘　　要：The solid-solid state coord ination reaction enthalpy of CaO w ith ascorb ic ac id has been determ ined by solution calorim e-try in an isoperibel reaction calorim eter at 298.2K.The calorim ietric solvent is 2mol/L HC l.A thermochem ical cyc le has been de-signed,and the standard Enthalpy of form ation for Ca(C6H7O6)2.4H2O(s) has been calcu lated.The recomm ended values of standard enthalpy of form ationΔfHΘm[Ca(C6H7O6)2.4H2O,s] is-3941.5kJ.The solid -solid state coordination reaction enthalpy of CaO with ascothic acid has been determined by solution calorimetry in an isoperibel reaction calorimeter at 298.2K. The calorimietric solvent is 2mol/L HCL A thermoohemical cycle has been designed,and the standard Enthalpy of formation for Ca （C6H7O6）2·4H2O （s）has been calculated. The recommended values of standard enthalpy of formation ΔfHm^Θ [ Ca（ C6H7O6 ）2 · 4H2O,s] is - 3941.5kJ · mol ^-1.

关 键 词：固相配合反应 氧化钙 抗坏血酸 热化学 标准生成焓 

分 类 号：O642.3[理学—物理化学]