Measurement and correlation of vapor–liquid equilibria for the system carbon dioxide–diisopropyl ether

A view cell with on-line sampling of the vapor and the liquid phase has been built for measuring vapor–liquid equilibria data under high pressure. The samples are analyzed by gas chromatography. VLE data for the system carbon dioxide–diisopropyl ether has been measured at 265.15–333.15 K and 0.5–2.5 MPa. The isothermal data were correlated using the Peng–Robinson equation. The correlated results agree well with the experimental results. The experiments confirm that diisopropyl ether is an excellent absorbent of carbon dioxide.