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- W2000970559 abstract "An equimolar diamine blend of 4 m 2-methylpiperazine (2MPZ) with 4 m piperazine (PZ) is shown to be an attractive solvent for CO2 capture. This blend overcomes the difficulties posed by the narrow solid solubility window of pure 8 m PZ while preserving its benefits. The solid solubility window at 20 °C broadens from to . As the blend viscosity is nearly double that of pure PZ, normalizing the capacity by viscosity shows a practical capacity comparable to MEA at 0.63 mol CO2/kg solvent. The CO2 absorption rate of the blend is lower, with at 40 °C, 84% that of PZ. The heats of CO2 absorption of the blend and PZ are equal at ΔHabs = 70 kJ/mol. While the blend thermal stability is decreased, Tmax = 155 compared to 163 °C, oxidative stability is similar. Lastly, their volatilities are nearly equal with amine Henry's constant near 23 Pa at 40 °C. In short, the equimolar blend of 4 m 2MPZ with 4 m PZ is a competitive solvent for amine scrubbing." @default.
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- W2000970559 date "2013-01-01" @default.
- W2000970559 modified "2023-09-26" @default.
- W2000970559 title "Carbon Capture with 4 m Piperazine/4 m 2-Methylpiperazine" @default.
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- W2000970559 doi "https://doi.org/10.1016/j.egypro.2013.05.129" @default.
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