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Issue 33, 2016
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Crystalline products of CO2 capture by piperazine aqueous solutions

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Abstract

Crystalline products of the reactions of piperazine (PZ) solutions with CO2 sourced from the air and dry ice represent three carboxamides of piperazine, piperazinium carboxamide trihydrate (PZH+CO2)·3H2O, piperazinium piperazine-4-carboxamide (PZH+)(PZCO2), and bis-(piperazinium) piperazine-1,4-bis(carboxamide) trihydrate (PZH+)2(PZ(CO2)2)·3H2O, whose crystal structures were revealed by single crystal X-ray diffraction studies. The interplay of hydrogen bonding affords the crystal stability of these hydrolytically labile piperazine carbamate derivatives which have not been observed in the solid state before. The crystal structure of piperazine monohydrate PZ·H2O is reported as well.

Graphical abstract: Crystalline products of CO2 capture by piperazine aqueous solutions

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Publication details

The article was received on 09 May 2016, accepted on 07 Jul 2016 and first published on 07 Jul 2016


Article type: Paper
DOI: 10.1039/C6CE01083K
Citation: CrystEngComm, 2016,18, 6282-6289
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    Crystalline products of CO2 capture by piperazine aqueous solutions

    M. S. Fonari, S. Antal, R. Castañeda, C. Ordonez and T. V. Timofeeva, CrystEngComm, 2016, 18, 6282
    DOI: 10.1039/C6CE01083K

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