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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非水体系（仲烷醇胺+ 2-己氧乙醇+ CO2）在293.15-353.15 K温度下的密度和粘度的测量和建模

了解新开发的吸收剂的物理化学性质对于理解二氧化碳吸收过程中的流体力学和传质行为是非常重要的。本文在（293.15-353.15）K和101.3 kPa的温度下，测量了含有胺和2-（己氧基）乙醇（EGHE）的部分碳化非水体系的密度和粘度。研究了3种仲烷醇胺(即2-（甲胺）乙醇、2-（乙胺）乙醇和2-（丁胺）乙醇在10-60质量%的浓度范围内的反应。结果表明，碳化溶液的粘度随温度、CO2负荷和胺浓度的变化呈指数变化。然而，随着温度的降低和CO2负荷的增加，所研究的共混物的密度近似呈线性增加。含co2解的属性数据可以用两种基于无co2属性数据的简单参数模型来表示。这些模型可以很好地预测CO2捕集过程中的热物理性质。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.