Vapor-liquid equilibrium of carbon dioxide with diethyl methylmalonate, diethyl ethylmalonate and diethyl n-butylmalonate at elevated pressures

Add time:10/01/2019    Source:infona.pl

Vapor-liquid equilibrium (VLE) data for binary mixtures of CO 2 with homologous esters of diethyl methylmalonate, diethyl ethylmalonate, and diethyl n-butylmalonate at 308.2, 318.2, and 328.2K, respectively, over the pressure range 1.4-8.4MPa were measured using a semi-flow apparatus. New gas solubility data for CO 2 in esters are presented, and the Henry's law constants for CO 2 in these esters are evaluated by employing the Krichevsky-Ilinskaya (KI) equation. The VLE data were also correlated using the Soave-Redlich-Kwong and the Peng-Robinson equations of state (EOSs) with various types of mixing rules. It is shown that EOS with both the van der Waals mixing rules and the two adjustable parameters yield satisfactory correlation results.

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