Liquid-liquid phase separation of {amine - H₂O - CO₂} systems: New methods for key data

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• 作者：Yohann Coulier^a ; ^b ; ^{yohann.coulier@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Alexander R. Lowe^a ; ^b ; Alejandro Moreau^a ; ^b ; K. Ballerat-Busserolles^a ; ^b ; J-Yves Coxam^a ; ^b
• 关键词：Demixing solvent ; CO2 capture ; LLE ; Ternary mixtures
• 刊名：Fluid Phase Equilibria
• 出版年：2017
• 出版时间：15 January 2017
• 年：2017
• 卷：431
• 期：Complete
• 页码：1-7
• 全文大小：1039 K

文摘

The LLE in aqueous solutions of N- methylpiperidine (NMPD, tertiary amine) and 2- methylpiperidine (2MPD, secondary amine) were investigated as function of CO₂ dissolution. New experimental techniques were developed in order to determine the temperatures of phase separation in aqueous solutions loaded with controlled quantities of gas.

The experimental investigation with NMPD and 2MPD solutions shows opposite effects on phase separation temperatures with CO₂ dissolution. The influence of CO₂ on LLE was discussed in terms of chemical reactions occurring in aqueous solutions of secondary and tertiary amines.