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Notes on Stefan-Maxwell equation versus Graham's diffusion law
Alternative TitleChin. J. Chem. Eng.
Mao, ZS
2000-12-01
Source PublicationCHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN1004-9541
Volume8Issue:4Pages:356-360
AbstractCertain prerequisite information on the component fluxes is necessary for solution of the Stefan-Maxwell equation in multicomponent diffusion systems and the Graham's law of diffusion and effusion is often resorted for this purpose. This article addresses solution of the Stefan-Maxwell equation in binary gas systems and explores the necessary conditions for definite solution of concentration profiles and pertinent component fluxes. It is found that there are multiple solutions for component fluxes in contradiction to what specified by the Graham's law of diffusion. The theorem of minimum entropy production in the non-equilibrium thermodynamics is believed instructive in determining the stable steady state solution out of infinite multiple solutions possible under the specified conditions. It is suggested that only when the boundary condition of component concentration is symmetrical in an isothermal binary system, the counter-diffusion becomes equimolar. The Graham's law of diffusion seems not generally valid for the case of isothermal ordinary diffusion.; Certain prerequisite information on the component fluxes is necessary for solution of the Stefan-Maxwell equation in multicomponent diffusion systems and the Graham's law of diffusion and effusion is often resorted for this purpose. This article addresses solution of the Stefan-Maxwell equation in binary gas systems and explores the necessary conditions for definite solution of concentration profiles and pertinent component fluxes. It is found that there are multiple solutions for component fluxes in contradiction to what specified by the Graham's law of diffusion. The theorem of minimum entropy production in the non-equilibrium thermodynamics is believed instructive in determining the stable steady state solution out of infinite multiple solutions possible under the specified conditions. It is suggested that only when the boundary condition of component concentration is symmetrical in an isothermal binary system, the counter-diffusion becomes equimolar. The Graham's law of diffusion seems not generally valid for the case of isothermal ordinary diffusion.
KeywordOrdinary Diffusion Stefan-maxwell Equation Graham's Law Of Diffusion Theorem Of Minimum Entropy Production Nonequilibrium Thermodynamics
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
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Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000165942500013
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Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/6005
Collection研究所(批量导入)
AffiliationAcad Sinica, Inst Chem Met, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Mao, ZS. Notes on Stefan-Maxwell equation versus Graham's diffusion law[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2000,8(4):356-360.
APA Mao, ZS.(2000).Notes on Stefan-Maxwell equation versus Graham's diffusion law.CHINESE JOURNAL OF CHEMICAL ENGINEERING,8(4),356-360.
MLA Mao, ZS."Notes on Stefan-Maxwell equation versus Graham's diffusion law".CHINESE JOURNAL OF CHEMICAL ENGINEERING 8.4(2000):356-360.
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