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DMA2P

JOURNAL OF CHEMICAL THERMODYNAMICS · 2016 · IF 2.196

Surface thermodynamics of DMA2P, DMA2P-MEA and DMA2P-PZ aqueous solutions

Dong Fu,LeMeng Wang,XiangFeng Tian

The surface tension (γ) of 1-dimethylamino-2-propanol (DMA2P), DMA2P-monoethanolamine (MEA), and DMA2P-piperazine (PZ) aqueous solutions was measured by using the BZY-1 surface tension meter. The temperature ranged from 303.2 K to 323.2 K. The mass fractions of DMA2P, MEA and PZ respectively ranged from 0.30 to 0.50, 0.05 to 0.15 and 0.025 to 0.075. An equation was proposed to model the surface tension and the calculated results agreed well with the experiments. The surface thermodynamics including surface enthalpy and surface entropy were determined and their concentration dependence was analysed.

CAS / MDL: 141-43-5

研究领域: 物理化学 · 热力学 · 表面科学

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JOURNAL OF CHEMICAL THERMODYNAMICS · 2026 · IF 2.2

Experimental and theoretical investigation on viscosity of carbonated piperazine (PZ) activated 1-dimethylamino-2-propanol (DMA2P) aqueous blends

Jianjun Chen,Jian Ma,Jichao Hu,Pan Zhang,Dong Fu,Lemeng Wang

In this study, we investigated the viscosity data of carbonated aqueous blends of 1-dimethylamino-2-propanol (DMA2P) and piperazine (PZ) over a temperature range of 303.2 to 323.2 K at atmospheric pressure. The concentration of DMA2P and PZ ranged from 30 wt% to 50 wt% and 2.5 wt% to 7.5 wt%, respectively. The experimental viscosities were calculated and predicted using the Weiland equation. The calculations showed good agreement with the experimental results, yielding an average relative deviation of 2.18%. Furthermore, the viscosity activation energy ( E a) and the estimated diffusion coefficient of CO 2 ( D CO2 ) into the carbonated DMA2P-PZ aqueous blends were derived using the Arrhenius-type expression and the modified Stokes-Einstein equation, respectively. The results indicate that the DMA2P-PZ absorbent exhibits promising potential for industrial application in CO 2 capture processes.

CAS / MDL: 108-16-7 7647-01-0

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