摘要
采用激光测量装置在不同温度、不同搅拌速度下研究了反式-1,2-环己二醇在水和乙酸乙酯中的溶解和超溶解特性,亦测定了甲酸钠在水中不同温度下的溶解和超溶解特性,得到了反式-1,2-环己二醇和甲酸钠的结晶介稳区.反式-1,2-环己二醇在水中和乙酸乙酯中的溶解度、超溶解度和介稳区宽度 (S均随温度的升高而增加,且反式-1,2-环己二醇在水中的溶解度、超溶解度和介稳区宽度 (S远远大于其在乙酸乙酯中的溶解度、超溶解度和介稳区宽度(S;反式-1,2-环己二醇在水中的超溶解度和介稳区宽度(S均随搅拌速度的提高而减小.高速搅拌下反式-1,2-环己二醇在水中的介稳区宽度 (θ为4℃左右,中速搅拌下为7℃左右;在乙酸乙酯中的介稳区宽度 (θ为3℃左右.甲酸钠在水中的溶解度、超溶解度和介稳区宽度 (S均随温度的升高而呈线性增加,介稳区宽度(θ在4～5℃之间.
The saturate and supersaturate characteristics of trans-1,2-cyclohexanediol in water and in ethyl acetate at different temperature and under different agitation rate were investigated by using laser detection technique, as well as those of sodium formate in water at different temperature. The crystallization metastable zone width of trans-1,2-cyclohexanediol and sodium formate in above solvents were also determined. The solubility, super-solubility and crystallization metastable zone width (ΔS) of trans-1,2-cyclohexanediol in water and in ethyl acetate increase with temperature rising, and those properties of trans-1,2-cyclohexanediol in water are much higher than those in ethyl acetate. The super-solubility and crystallization metastable zone width (ΔS) of trans-1,2-cyclohexanediol in water decrease with the increase of agitation rate. The crystallization metastable zone width (Δθ) of trans-1,2-cyclohexanediol in water is about 4°C under high agitation rate, and about 7°C under medial agitation rate. The crystallization metastable zone width (Δθ) of trans-1,2-cyclohexanediol in ethyl acetate is about 3°C. The solubility, super-solubility and crystallization metastable zone width (ΔS) of sodium formate in water increase with the increase of temperature and the crystallization metastable zone width (Δθ) is in the range of 4°C to 5°C.
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
2004年第5期653-658,共6页
Journal of Chemical Engineering of Chinese Universities
基金
河南省自然科学基金资助项目(0211020800)
河南省杰出人才基金资助项目(01210011900)。
