Experimental investigation of liquid density for n-pentane + n-decane mixtures at temperatures from 283 K to 363 K and pressures up to 100 MPa

IF 2.8 3区工程技术 Q3 CHEMISTRY, PHYSICAL

Fluid Phase Equilibria Pub Date : 2025-06-13 DOI:10.1016/j.fluid.2025.114501

Tao Jia , Jinpeng Yang , Jia Yu

{"title":"Experimental investigation of liquid density for n-pentane + n-decane mixtures at temperatures from 283 K to 363 K and pressures up to 100 MPa","authors":"Tao Jia , Jinpeng Yang , Jia Yu","doi":"10.1016/j.fluid.2025.114501","DOIUrl":null,"url":null,"abstract":"<div><div>Knowledge of the accurate <em>pρTx</em> behavior of hydrocarbon mixtures at different temperatures and pressures is indispensable for simulating reservoir behavior, optimizing recovery processes, and predicting the thermodynamic properties. The compressed liquid densities of <em>n</em>-pentane(1) + <em>n</em>-decane(2) binary mixtures with mole fraction <em>x</em><sub>1</sub> = 0.1024, 0.2978, 0.5145, 0.7036, and 0.9113 were measured using a vibrating tube densimeter at temperatures from 283 K to 363 K, and pressures up to 100 MPa. The relative uncertainty for density measurement of <em>n</em>-pentane + <em>n</em>-decane binary mixtures of 0.99 mol fraction purity is 0.1 %. The densities of binary mixtures were correlated with the modified Tait equation, and the absolute average deviations of the experimental and calculated values were 0.005 %, 0.005 %, 0.006 %, 0.008 %, and 0.009 %, respectively. In addition, the isothermal compressibility, the isobaric thermal expansivity, and excess molar volume were calculated from experimental densities.</div></div>","PeriodicalId":12170,"journal":{"name":"Fluid Phase Equilibria","volume":"598 ","pages":"Article 114501"},"PeriodicalIF":2.8000,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Fluid Phase Equilibria","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0378381225001712","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Knowledge of the accurate pρTx behavior of hydrocarbon mixtures at different temperatures and pressures is indispensable for simulating reservoir behavior, optimizing recovery processes, and predicting the thermodynamic properties. The compressed liquid densities of n-pentane(1) + n-decane(2) binary mixtures with mole fraction x₁ = 0.1024, 0.2978, 0.5145, 0.7036, and 0.9113 were measured using a vibrating tube densimeter at temperatures from 283 K to 363 K, and pressures up to 100 MPa. The relative uncertainty for density measurement of n-pentane + n-decane binary mixtures of 0.99 mol fraction purity is 0.1 %. The densities of binary mixtures were correlated with the modified Tait equation, and the absolute average deviations of the experimental and calculated values were 0.005 %, 0.005 %, 0.006 %, 0.008 %, and 0.009 %, respectively. In addition, the isothermal compressibility, the isobaric thermal expansivity, and excess molar volume were calculated from experimental densities.

Abstract Image

查看原文本刊更多论文

温度从283 K到363 K，压力高达100 MPa，正戊烷+正癸烷混合物液体密度的实验研究

了解不同温度和压力下烃类混合物的精确pρTx行为对于模拟储层行为、优化采收率过程和预测热力学性质是必不可少的。用振动管密度计测量了摩尔分数x1 = 0.1024、0.2978、0.5145、0.7036和0.9113的正戊烷(1)+正癸烷(2)二元混合物在283 K ~ 363 K、100 MPa压力下的压缩液体密度。0.99 mol分数纯度的正戊烷+正癸烷二元混合物密度测量的相对不确定度为0.1%。二元混合物的密度与修正后的Tait方程相关，实验值与计算值的绝对平均偏差分别为0.005%、0.005%、0.006%、0.008%和0.009%。此外，根据实验密度计算了等温压缩率、等压热膨胀率和过量摩尔体积。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Fluid Phase Equilibria 工程技术-工程：化工

CiteScore

5.30

自引率

15.40%

发文量

223

审稿时长

53 days

期刊介绍： Fluid Phase Equilibria publishes high-quality papers dealing with experimental, theoretical, and applied research related to equilibrium and transport properties of fluids, solids, and interfaces. Subjects of interest include physical/phase and chemical equilibria; equilibrium and nonequilibrium thermophysical properties; fundamental thermodynamic relations; and stability. The systems central to the journal include pure substances and mixtures of organic and inorganic materials, including polymers, biochemicals, and surfactants with sufficient characterization of composition and purity for the results to be reproduced. Alloys are of interest only when thermodynamic studies are included, purely material studies will not be considered. In all cases, authors are expected to provide physical or chemical interpretations of the results. Experimental research can include measurements under all conditions of temperature, pressure, and composition, including critical and supercritical. Measurements are to be associated with systems and conditions of fundamental or applied interest, and may not be only a collection of routine data, such as physical property or solubility measurements at limited pressures and temperatures close to ambient, or surfactant studies focussed strictly on micellisation or micelle structure. Papers reporting common data must be accompanied by new physical insights and/or contemporary or new theory or techniques.