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The kinetics and thermodynamics of surfactants in solvent sublation
Alternative TitleFresenius J. Anal. Chem.
Lu, YJ; Wang, YS; Xiong, Y; Zhu, XH
2001-08-01
Source PublicationFRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY
ISSN0937-0633
Volume370Issue:8Pages:1071-1076
AbstractSolvent sublation has been performed on very dilute solutions of one cationic surfactant, hexadecylpyridinium chloride (HPC), and one anionic surfactant. dodecylbenzenesulfonic acid (LBS). Some thermodynamic values were obtained, e.g. molecular areas, A, which are 50.0 and 47.7 Angstrom(2)/molecule, respectively, for HPC and LBS, and free adsorption energies, DeltaGdegrees(ads), which are -33.17 and -43.58 kJ mol(-1), respectively, for HPC and LBS. The kinetics were determined for a range of temperatures and gas flow-rates. Although the processes of solvent sublation of the two surfactants obey first-order kinetics, the respective adsorption mechanisms of HPC and LBS in the solvent sublation process were different. The pH and the presence of KCl and ethanol had no effect on the solvent sublation of LBS. The apparent active energy was calculated as 8.11 kJ mol(-1).; Solvent sublation has been performed on very dilute solutions of one cationic surfactant, hexadecylpyridinium chloride (HPC), and one anionic surfactant. dodecylbenzenesulfonic acid (LBS). Some thermodynamic values were obtained, e.g. molecular areas, A, which are 50.0 and 47.7 Angstrom(2)/molecule, respectively, for HPC and LBS, and free adsorption energies, DeltaGdegrees(ads), which are -33.17 and -43.58 kJ mol(-1), respectively, for HPC and LBS. The kinetics were determined for a range of temperatures and gas flow-rates. Although the processes of solvent sublation of the two surfactants obey first-order kinetics, the respective adsorption mechanisms of HPC and LBS in the solvent sublation process were different. The pH and the presence of KCl and ethanol had no effect on the solvent sublation of LBS. The apparent active energy was calculated as 8.11 kJ mol(-1).
KeywordTrace-element Separation Transport Extraction Preconcentration
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
URL查看原文
Indexed BySCI
Language英语
WOS KeywordTRACE-ELEMENT SEPARATION ; TRANSPORT EXTRACTION ; PRECONCENTRATION
WOS Research AreaChemistry
WOS SubjectChemistry, Analytical
WOS IDWOS:000175276300016
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Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5757
Collection研究所(批量导入)
Affiliation1.Shengzhen Univ, Normal Sch, Dept Biol & Chem, Shengzhen 518060, Peoples R China
2.Zhongshan Univ, Sch Chem & Chem Engn, Guangzhou 510275, Peoples R China
3.Chinese Acad Sci, Inst Chem Met, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Lu, YJ,Wang, YS,Xiong, Y,et al. The kinetics and thermodynamics of surfactants in solvent sublation[J]. FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY,2001,370(8):1071-1076.
APA Lu, YJ,Wang, YS,Xiong, Y,&Zhu, XH.(2001).The kinetics and thermodynamics of surfactants in solvent sublation.FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY,370(8),1071-1076.
MLA Lu, YJ,et al."The kinetics and thermodynamics of surfactants in solvent sublation".FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY 370.8(2001):1071-1076.
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