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Rigorous characterization of static and dynamic apparatus for measuring limiting activity coefficients

机译：静态和动态仪器的严格表征，用于测量极限活度系数

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In differential ebulliometry the true liquid equilibrium composition is related to the charge composition through an equipment characterization parameter E, which is a function of the vaporization ratio phi. Exact computation of gamma (infinity)(1) requires an iterative solution of a set of three equations. A similar but simpler formulation is possible for differential static apparatus, which accounts exactly for the vapor hold-up. An equipment parameter E is most conveniently resolved in terms of the total equipment volume and involves two new dimensionless groups R-T and R-G. An iterative procedure involving regula-falsi gave rapid convergence for all systems studied. The flexible one-constant Wilson equation is recommended. For systems of large relative volatility large errors in gamma (infinity)(1) will result, even at low pressure, if vapor hold-up is not accounted for and if R-T much greater than 1. New values for the self-association constant k are proposed for 2-propanol and ethanol as functions of temperature. (C) 2001 Elsevier Science B.V. All rights reserved. [References: 13]
机译：在微分浊度法中，真实的液体平衡成分通过设备表征参数E与装料成分相关，该参数是蒸发比phi的函数。伽玛（无穷）（1）的精确计算需要一组三个方程的迭代解。对于差分静态设备，可能采用类似但更简单的公式，该公式恰好说明了蒸气滞留。设备参数E在设备总体积方面最为方便地解析，涉及两个新的无量纲组R-T和R-G。涉及regula-falsi的迭代过程使所研究的所有系统快速收敛。建议使用灵活的一常数Wilson方程。对于相对波动较大的系统，即使在低压下，如果不考虑蒸汽滞留并且RT远大于1，也会导致gamma（infinity）（1）产生较大误差。提出了2-丙醇和乙醇作为温度的函数。 （C）2001 Elsevier Science B.V.保留所有权利。 [参考：13]

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