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In this work the solid–liquid equilibrium (SLE) and freezing-point depression (FPD) in the electrolytic binary aqueous systems piperazine (PZ, CAS No. 110-85-0) and aqueous 2-amino-2-methyl-1-propanol (AMP, CAS No. 124-68-5) were measured. The FPD and solubility were also determined in the ternary AMP–PZ–H2O system. A method was developed by which solubility can be determined at higher temperatures using the FPD setup. A total of 86 data points are listed in the full concentration range from (−35 to 90) °C. The solid phases piperazine hexahydrate (PZ·6H2O), piperazine hemihydrate (PZ·1/2H2O), and anhydrous PZ precipitated during the experiments. The data can be used in the formulation, prevention, or intentional formation of slurries in piperazine solvents for promoting CO2 capture using absorption and desorption.
Original languageEnglish
JournalJournal of Chemical and Engineering Data
Volume56
Issue number12
Pages (from-to)5088-5093
ISSN0021-9568
DOIs
StatePublished - 2011
Peer-reviewedYes

Bibliographical note

Special Issue: Kenneth N. Marsh Festschrift

CitationsWeb of Science® Times Cited: 8
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