折光指数法测定水-吡啶液平衡相图

The Water-pyridine Liquid Vapor Equilibrium Phasigram Mensurated with Refractive Index

在不同温度下,应用阿贝折光仪分别测定系列吡啶水混合液折光率,并选用n=A-B×CX模型对混合液中吡啶摩尔分数(X吡啶)、折光率(n)进行非线性关联拟合。依据拟合曲线,通过蒸馏平衡实验进行水-吡啶二元互溶双液体系相图的绘制。

This paper measures the refractive index of series pyridine water mixture by using Abbe refractometer at different temperature, and makes nonlinear correlated fitting between mole fraction of pyridine （X-pyridyl） and refractive index（n） in the mixed liquor by using the model of n=A -B×C^x, and according to the fitting curve, draws the water-pyridine dibasic miscible liquid-liquid system through the distilled balance experiments.