کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
215636 1426254 2013 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Solubility measurements of hydrogen in 1-butyl-3-methylimidazolium tetrafluoroborate and the effect of carbon dioxide and a selected catalyst on the hydrogen solubility in the ionic liquid
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Solubility measurements of hydrogen in 1-butyl-3-methylimidazolium tetrafluoroborate and the effect of carbon dioxide and a selected catalyst on the hydrogen solubility in the ionic liquid
چکیده انگلیسی

The high pressure phase behavior of a binary mixture containing hydrogen (H2) and 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF4]) is studied by measuring bubble-point pressures at different temperatures for three compositions with hydrogen mole fractions of 5, 7.5 and 10 mol%. Since this work is part of a study to design a hydrogenation process, using [bmim][BF4] as the reaction medium, the effects of adding carbon dioxide (CO2) or the hydrogenation catalyst (−)-1,2-bis((2R,5R)-2,5-dimethylphospholano)benzene (cyclooctadiene)rhodium(I) tetrafluoroborate (Rh-MeDuPHOS) on H2 solubility in [bmim][BF4] was measured as well. All measurements were conducted in an autoclave set-up, allowing pressures up to 60 MPa and temperatures ranging from 313.15 up to 368.15 K.Results indicated that the presence of catalyst increased the H2 solubility in [bmim][BF4] compared to those of binary mixtures of H2 + [bmim][BF4] throughout the whole temperature range studied. However, the addition of CO2 to the binary system of H2 + [bmim][BF4] increases the H2 solubility at lower temperatures (<330 K), and decreases it at higher temperatures (>340 K).


► The presence of catalyst decreased the bubble point pressures.
► The addition of CO2 decreased the bubble point pressure at lower temperatures.
► The addition of CO2 increased the bubble point pressure at higher temperatures.
► [bmim][BF4] is a viable option as the hydrogenation solvent.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Chemical Thermodynamics - Volume 59, April 2013, Pages 239–242
نویسندگان
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