Vapor-liquid equilibria of CO2 + C1-C5 alcohols from the experiment and the COSMO-SAC Model

Chieh Ming Hsieh, Thorsten Windmann, Jadran Vrabec

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

The phase behavior of CO2 + alcohols is crucial for the design and optimization of extraction processes that use these alcohols as cosolvents to increase the solubility of polar solutes in supercritical CO2. In this study, the vapor-liquid equilibria (VLE) of CO2 + 2,2-dimethyl-1-propanol are measured at 333.2 K and 353.2 K with a high pressure view cell technique based on the synthetic method. This completes the literature database for binary VLE of CO2 with low mass alcohols up to pentanols. We further systematically investigate the prediction of all binary CO2 + C1-C5 alcohols mixtures with the COSMO-SAC model. Qualitative predictions are obtained when the COSMO-SAC model is combined with the Peng-Robinson-Stryjek-Vera equation of state through the modified Huron-Vidal first-order or the Wong-Sandler mixing rule.

Original languageEnglish
Pages (from-to)3420-3429
Number of pages10
JournalJournal of Chemical and Engineering Data
Volume58
Issue number12
DOIs
StatePublished - 12 Dec 2013

Fingerprint

Dive into the research topics of 'Vapor-liquid equilibria of CO2 + C1-C5 alcohols from the experiment and the COSMO-SAC Model'. Together they form a unique fingerprint.

Cite this