ICCAS OpenIR
Effect of size and polarity of solutes on partial molar volumes and intermolecular interaction in supercritical fluids
Zhang, XG; Gao, L; Liu, ZM; He, J; Zhang, JM; Han, BX
2002-08-01
Source PublicationJOURNAL OF SUPERCRITICAL FLUIDS
ISSN0896-8446
Volume23Issue:3Pages:233-241
AbstractThe densities of supercritical (SC) n-pentane and n-pentane- methane, n -pentane-propane, n-pentane-n-heptane, n-pentane-n-decane, n-pentane-carbon dioxide, n-pentane-ethanol, and n-pentane-acetonitrile binary SC mixtures were measured at 476.6 K in the pressure range from 2 to 5 MPa, and n-pentane was SC solvent. The molalities of the solutes were 1.3 x 10(-4) mol g(-1). The partial molar volumes (PMVs) of the solutes were calculated on the basis of determined densities. It was observed that the PMVs of methane, propane, n-heptane and n-decane in SC n-pentane change from positive to negative as their size increases, but the peaks of the PMVs always corresponded to highest isothermal compressibility of the fluids. Ethanol, acetonitrile, carbon dioxide, and propane have different structure and polarity, but PMVs of the four solutes exhibit similar behavior, suggesting that the polarity and structure of the solutes are not dominant factors to influence the PMVs for the systems studied in this work under the experimental conditions. Monte Carlo simulation was carried out to study the microstructure of the fluids under some typical conditions where the density measurements were conducted. (C) 2002 Elsevier Science B.V. All rights reserved.
KeywordPartial Molar Volumes Intermolecular Interactions Supercritical Fluids
Indexed BySCI
Language英语
WOS IDWOS:000176604100005
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/78748
Collection中国科学院化学研究所
Corresponding AuthorHan, BX
AffiliationChinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Zhang, XG,Gao, L,Liu, ZM,et al. Effect of size and polarity of solutes on partial molar volumes and intermolecular interaction in supercritical fluids[J]. JOURNAL OF SUPERCRITICAL FLUIDS,2002,23(3):233-241.
APA Zhang, XG,Gao, L,Liu, ZM,He, J,Zhang, JM,&Han, BX.(2002).Effect of size and polarity of solutes on partial molar volumes and intermolecular interaction in supercritical fluids.JOURNAL OF SUPERCRITICAL FLUIDS,23(3),233-241.
MLA Zhang, XG,et al."Effect of size and polarity of solutes on partial molar volumes and intermolecular interaction in supercritical fluids".JOURNAL OF SUPERCRITICAL FLUIDS 23.3(2002):233-241.
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