An FTIR spectroscopic study and quantification of 2-Amino-2-methyl-1-propanol (cas 124-68-5), piperazine and absorbed carbon dioxide in concentrated aqueous solutions
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Add time:09/10/2019 Source:sciencedirect.com
This study reports the investigation of carbon dioxide (CO2) absorption into an amine blend solution of 2-amino-2-methyl-1-propanol (AMP) and piperazine (PZ). The reaction in the liquid phase between CO2 and the amines were qualitatively and quantitatively monitored by Fourier Transform Mid-Infrared spectroscopy (mid-FTIR). A multivariate partial least square regression (PLS2) model was obtained to quantify free or non-reacted AMP and PZ and absorbed CO2 in all chemical forms, i.e. no differentiation was made into carbonates or carbamates. The calibration model was constructed using a single wide region and 270 calibration samples. The concentration of AMP, PZ and CO2 from 568 samples were simultaneously predicted with low relative errors.
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