Piperazine/N-methylpiperazine/N,N’-dimethylpiperazine as an Aqueous Solvent for Carbon Dioxide CaptureStephanie A. Freeman, Xi Chen, Thu Nguyen, Humera Rafique, Qing Xu and Gary T. RochelleOil Gas Sci. Technol. – Rev. IFP Energies nouvelles, 69 5 (2014) 903-914DOI: https://doi.org/10.2516/ogst/2012089