Gaseous pvTx properties for the binary mixtures of carbon dioxide (CO2) + trans-1,3,3,3-tetrafluoropropene (R1234ze(E)) and carbon dioxide (CO2) + 3,3,3-trifluoropropene (R1243zf)

IF 2.2 3区工程技术 Q3 CHEMISTRY, PHYSICAL

Journal of Chemical Thermodynamics Pub Date : 2024-07-03 DOI:10.1016/j.jct.2024.107345

Erqi Wang, Shuzhou Peng, Kang Qing, Zhen Yang, Yuanyuan Duan

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Abstract

The gaseous pvTx data of the binary mixtures for carbon dioxide (CO₂) + trans-1,3,3,3-tetrafluoropropene (R1234ze(E)) and CO₂ + 3,3,3-trifluoropropene (R1243zf) were experimentally measured at 5 isotherms from 333.15 K to 393.15 K. The experiment used a Burnett apparatus and the highest experimental pressure exceeded 7 MPa. The standard uncertainties of temperature, pressure and mole fraction are 10 mK, 0.2 ∼ 0.8 kPa and 0.0015, respectively. The relative uncertainty of the molar density is 0.05 %. Based on the experimental data of pure components and mixtures, three-term truncated virial equations of state (EoS) were established. The relative root mean square deviations (RMSD) of virial EoS in calculating density of CO₂ + R1234ze(E) and CO₂ + R1243zf mixtures are 0.15 % and 0.05 %, respectively. The virial EoS obtained in this work were compared with REFPROP 10.0 and the literature data, and the virial coefficients were calculated and compared between the experimental value and the calculated value from virial EoS.

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二氧化碳（CO2）+反式-1,3,3,3-四氟丙烯（R1234ze(E)）和二氧化碳（CO2）+3,3,3-三氟丙烯（R1243zf）二元混合物的气态 pvTx 特性

在 333.15 K 至 393.15 K 的 5 个等温线上实验测量了二氧化碳 (CO2) + 反式-1,3,3,3-四氟丙烯 (R1234ze(E)) 和二氧化碳 + 3,3,3-三氟丙烯 (R1243zf) 二元混合物的气态 pvTx 数据。温度、压力和摩尔分数的标准不确定度分别为 10 mK、0.2 ∼ 0.8 kPa 和 0.0015。摩尔密度的相对不确定性为 0.05%。根据纯组分和混合物的实验数据，建立了三项截断病毒状态方程（EoS）。在计算 CO2 + R1234ze(E) 和 CO2 + R1243zf 混合物密度时，virial EoS 的相对均方根偏差（RMSD）分别为 0.15 % 和 0.05 %。将本研究获得的virial EoS与REFPROP 10.0和文献数据进行了比较，并计算了virial系数，并将实验值与virial EoS计算值进行了比较。

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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.