کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
216380 1426269 2012 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Compressed liquid densities for the (n-heptane + n-decane) and (n-octane + n-decane) systems from T = (313 to 363) K
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Compressed liquid densities for the (n-heptane + n-decane) and (n-octane + n-decane) systems from T = (313 to 363) K
چکیده انگلیسی

Densities (p, ρ, T, x1) of two binary n-alkane systems are reported from T = (313 to 363) K in the compressed liquid phase up to 25 MPa over the whole range of composition. The binary mixtures {x1n-heptane + (1 − x1)n-decane} and {x1n-octane + (1 − x1)n-decane} were prepared at compositions of (x1 = 0.0531, 0.2594, 0.5219, 0.777, 0.952), and (x1 = 0.0616, 0.2801, 0.5314, 0.7736, 0.9623), respectively. A measuring system based on a vibrating tube densimeter, DMA HPM from Anton Paar with data acquisition system was developed in order to obtain experimental densities. Water and nitrogen were used as reference fluids to calibrate the densimeter. Experimental methodology was checked by comparing the n-heptane and n-decane densities against multi-parameter equations proposed in the literature. Differences between both sets of data show a maximum deviation of 0.07%. Excess molar volumes, isothermal compressibility and isobaric thermal expansivity were computed from experimental densities.


► We built an equipment which consists of a variable volume cell and a VTD Anton Paar DMA–HPM.
► Compressed liquid densities are reported for n-heptane and n-decane.
► Binary (n-heptane or n-octane + n-decane) systems were studied in the whole range of composition.
► Derived properties were calculated from experimental data.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Chemical Thermodynamics - Volume 44, Issue 1, January 2012, Pages 133–147
نویسندگان
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