کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5409212 1506546 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
On the prediction of the vapor pressure of ionic liquids based on the principle of corresponding states
ترجمه فارسی عنوان
در مورد پیش بینی فشار بخار مایعات یونی بر مبنای اصل مربوط به حالت ها
کلمات کلیدی
مایعات یونی، فشار بخار، اصل ایالات متناظر، گسترش پیتزر، انطباق تبخیر، روش مشارکت گروهی،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
چکیده انگلیسی


- Sound thermodynamic foundation based on the truncated Pitzer expansion
- Utilization of 309 experimental data points pertaining to 20 ILs of different classes
- Accurate prediction of the molar enthalpy of vaporization of 62 ILs based on the Clausius-Clapeyron equation
- Thorough comparison with two predictive models developed based on the zero-pressure liquid fugacity approach
- AARDs of 6.97% and 5.89% in the prediction of the vapor pressure and enthalpy of vaporization of ILs

The complexity, coupled with the high cost of the experimental determination of the vapor pressure of pure ionic liquids (ILs), which at moderate temperatures typically assume values below 0.1 (Pa), make the development of predictive models for this important thermophysical property crucial. Employing 309 experimental data points belonging to 20 ILs of different classes and based on the truncated Pitzer expansion, in the current work a simple analytical expression has been developed for the prediction of the vapor pressure of pure ILs. In doing so, all the required critical properties have been estimated using a well-known group contribution method. Subsequently, utilizing the Clausius-Clapeyron equation, a very simple expression has been derived for the prediction of the enthalpy of vaporization of ILs. Total AARDs of 6.97% in the prediction of the available experimental vapor pressure data, and of 5.89% in the prediction of the molar heat of vaporization of 62 ILs demonstrate the satisfactory accuracy and predictive performance of the model developed in the current study. A thorough comparison has also been made with two previously published generalized expressions based on the zero-pressure liquid fugacity approach, through which the superiority of the proposed model has been established.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Liquids - Volume 225, January 2017, Pages 118-126
نویسندگان
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