【摘要】 用惰性气流带出和气相色谱法测定无限稀释活度系数,这一方法包括改进了平衡釜的结构以增大气液界面和加长气液两相的接触时间;采用双釜流程,在平衡釜前加一个盛有纯溶剂的预饱和器,使平衡釜内的溶剂损失减至最小。这样,使平衡釜内的气液两相达到平衡,并使溶剂不变。在计算实验结果时,考虑了平衡釜出口气流中的溶剂蒸气量,使实验结果准确可靠。更多还原

【Abstract】 The inert gas stripping and gas chromatograph method has been used to determine the activity coefficients at infinite dilution. The method involves modifying the construction of equilibrium cell to enlarge the gas-liquid interface and to increase the contact time between gas and liquid phases; using a double cell scheme: in front of the equilibrium cell, setting a presaturation cell filling with pure solvent to minimize the losses of solvent in the equilibrium cell. With this method the vapor-liquid equilibrium is established and the amount of solvent is constant in the cell. In the calculation of experimental results the amount of solvent vapor in the outlet gas stream of the cell was taken into account. The accuracy of experimental results is reliable.更多还原