摘要
采用差示扫描量热法,以升温扫描速率2K.min-1,测定了双酚A分别在溶剂苯酚及二元混合溶剂苯酚-丙酮、苯酚-水和三元混合溶剂苯酚-丙酮-水中的溶解度数据,溶质及各溶剂的浓度范围分别为:双酚A 7%～30%(wt);苯酚70%～93%(wt);丙酮0%～5%(wt);水0%～5%(wt).为每一物系,提出了关联实验数据温度与溶解度关系的数学方程式,方程式参数不超过4个,并根据最小二乘法拟合得到.对每一物系进行关联,关于温度的均方根偏差分别为0.36K,0.68K,0.68K和0.78K,关联结果十分成功.实验结果可用于双酚A结晶过程.
The solubilities of bisphenol A(BPA) in phenol, binary (phenol+acetone), (phenol+water) and tenary (phenol+acetone+water) solvent mixtures were determined by differential scanning calorimetry (DSC) in the concentration range of solute bisphenol A 7%-30% (wt), solvent phenol 70%-93% (wt), acetone 0%-5% (wt) and water 0%-5% (wt) at the heating scan speed 2.0 K·min-1. For each of the four systems, four correlation equations-mathematical descriptions of the experimental results were proposed respectively for correlating the relation between temperature and solubility. In those equations the number of the empirical parameters was no more than four and the parameters were fitted by the method of least squares. Using those correlating equations and fitted parameters the root-mean-square deviations between the calculated and experimental temperature for the four equations were 0.36 K, 0.68 K, 0.68 K and 0.78 K, respectively. Each of the equations describes the above systems successfully. The results can be used for the crystallization procedure of BPA production.
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
2004年第3期367-370,共4页
Journal of Chemical Engineering of Chinese Universities
关键词
溶解度
双酚A
关联
差示扫描量热法
Correlation methods
Crystallization
Differential scanning calorimetry
Least squares approximations
Solubility
