Measurement and modeling of density and viscosity of nonaqueous systems (secondary alkanolamines + 2-hexyloxyethanol + CO2) at temperatures of (293.15–353.15) K

IF 2.2 3区工程技术 Q3 CHEMISTRY, PHYSICAL

Journal of Chemical Thermodynamics Pub Date : 2024-12-17 DOI:10.1016/j.jct.2024.107431

Qinghai Long, Guangyi Cui, Shuo Wang, Shufeng Shen

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引用次数: 0

Abstract

Knowledge of physicochemical properties of new developed absorbents is important for understanding the hydrodynamics and mass transfer behaviors during CO₂ absorption. In this work, density and viscosity of partially carbonated nonaqueous systems containing amine and 2-(hexyloxy)ethanol (EGHE) were measured at temperatures of (293.15–353.15) K and 101.3 kPa. Three secondary alkanolamines (i.e., 2-(methylamino)ethanol, 2-(ethylamino)ethanol and 2-(butylamino)ethanol) were investigated in the concentration range of 10–60 mass%. It was found that viscosities of the carbonated solutions presented an exponential change with the temperature, CO₂ loading and amine concentration. However, an approximately linear increase in density with the decreasing temperature and the increasing CO₂ loading was observed for all the studied blends. Property data of the CO₂-loaded solutions can be represented by two proposed models with simple parameters based on CO₂-free property data. These models can provide good prediction of thermophysical properties in a CO₂ capture process.

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来源期刊

Journal of Chemical Thermodynamics 工程技术-热力学

CiteScore

5.60

自引率

15.40%

发文量

199

审稿时长

79 days

期刊介绍： The Journal of Chemical Thermodynamics exists primarily for dissemination of significant new knowledge in experimental equilibrium thermodynamics and transport properties of chemical systems. The defining attributes of The Journal are the quality and relevance of the papers published. The Journal publishes work relating to gases, liquids, solids, polymers, mixtures, solutions and interfaces. Studies on systems with variability, such as biological or bio-based materials, gas hydrates, among others, will also be considered provided these are well characterized and reproducible where possible. Experimental methods should be described in sufficient detail to allow critical assessment of the accuracy claimed. Authors are encouraged to provide physical or chemical interpretations of the results. Articles can contain modelling sections providing representations of data or molecular insights into the properties or transformations studied. Theoretical papers on chemical thermodynamics using molecular theory or modelling are also considered. The Journal welcomes review articles in the field of chemical thermodynamics but prospective authors should first consult one of the Editors concerning the suitability of the proposed review. Contributions of a routine nature or reporting on uncharacterised materials are not accepted.