Journal
JOURNAL OF MOLECULAR LIQUIDS
Volume 241, Issue -, Pages 374-385Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.molliq.2017.05.144
Keywords
Density; Viscosity; Surface tension; Intermolecular interaction; 1,2-Ethanediamine; 1,2-Propanediol
Funding
- National Natural Science Foundation of China [21666027]
- Program for Grassland Excellent Talents of Inner Mongolia Autonomous Region
- Program for New Century Excellent Talents in University [NCET-12-1017]
- Natural Science Foundation of Inner Mongolia Autonomous Region [2016JQ02]
- Key Laboratory of Coal-based CO2 Capture and Geological Storage (Jiangsu Province, China University of Mining and Technology) [2016A06]
- Inner Mongolia Science and Technology Key Projects
- Inner Mongolia University of Technology
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Liquid densities, viscosities, and surface tensions play significant roles in fluid flow and industrial applications for CO2 capture. These data of 1,2-ethanediamine (EDA) + 1,2-propanediol (PPD) binary system were measured under atmospheric pressure at T = (293.15 to 318.15) K throughout the entire concentration range. According to the experimental viscosities and densities, the viscosity deviation and excess molar volume values were respectively calculated, and the Redlich-Kister equation was used to fit the coefficients and to evaluate the deviations. The system exhibited negative excess molar volume values with a minimum at x(1) approximate to 0.54 at experimental temperatures, and a maximum was found at x(1) approximate to 0.76 for viscosity deviation. The solubility of CO2 was measured at different flow rates, and the maximum solubility was about 0.57 g CO2 per 1 g EDA + PPD system at 250 mL/min CO2 flow rate. Furthermore, the intermolecular interaction of PPD with EDA was systemically discussed according to FTIR, UV-Vis, H-1 NMR, and fluorescence spectral results, surface tension, and electrical conductivity data, and it was expressed as the form of HO-CH2(CH3)CH2O-H center dot NH2CH2CH2N(H-2). (C) 2017 Elsevier B.V. All rights reserved.
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