Fast solvent screening via quantum chemistry: COSMO‐RS approach

AICHE Journal - Tập 48 Số 2 - Trang 369-385 - 2002
Frank Eckert1, Andreas Klamt1
1COSMOlogic GmbH&Co.KG, D-51381 Leverkusen, Germany

Tóm tắt

AbstractCOSMO‐RS, a general and fast methodology for the a priori prediction of thermophysical data of liquids is presented. It is based on cheap unimolecular quantum chemical calculations, which, combined with exact statistical thermodynamics, provide the information necessary for the evaluation of molecular interactions in liquids. COSMO‐RS is an alternative to structure interpolating group contribution methods. The method is independent of experimental data and generally applicable. A methodological comparison with group contribution methods is given. The applicability of the COSMO‐RS method to the goal of solvent screening is demonstrated at various examples of vapor–liquid‐, liquid–liquid‐, solid–liquid‐equilibria and vapor‐pressure predictions.

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