کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9626077 460698 2005 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Concentration-dependent diffusion coefficients from a single experiment using model-based Raman spectroscopy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Concentration-dependent diffusion coefficients from a single experiment using model-based Raman spectroscopy
چکیده انگلیسی
Diffusion in liquids can still be predicted only with high uncertainty due to the lack of sufficient experimental data. Diffusion experiments are complex and time-consuming. Furthermore, the concentration dependence of the diffusion coefficients requires usually several experiments even for binary mixtures. The possibility to extract this information from one short Raman diffusion experiment is explored here. A general identification framework is provided which does not require the a priori specification of a diffusion coefficient model structure but establishes the concentration dependence directly from the data. The methodology is used to determine the diffusion coefficient in the mixture ethyl acetate-cyclohexane in a wide concentration range.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fluid Phase Equilibria - Volumes 228–229, February 2005, Pages 357-366
نویسندگان
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