کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
220030 | 463312 | 2010 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Chronoamperometric determination of diffusion coefficients of ferrocene in ionic liquids mixed with CO2 at high pressures
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
The diffusion coefficients (D) of ferrocene have been determined by chronoamperometry in two ionic liquids (ILs), 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)amide ([BMIM][Tf2N]) and 1-methyl-3-octylimidazolium bis(trifluoromethanesulfonyl)amide ([OMIM][Tf2N]) at atmospheric pressure and mixed with CO2 at high pressures (p = 1.5, 3.0, and 4.5 MPa) at two isotherms (T = 298.15 and 313.15 K) using the high-pressure electrochemical cell developed in our laboratory. The results showed that D increased with increasing pressure in two ILs, of which the dependence was well represented by a quadratic form of pressure. More remarkable increase in D with pressure was observed at lower temperature in both ILs, due to the higher solubility of CO2 at a fixed pressure. This leads to the crossing points in the plots of Dvs. p at two different temperatures, which correspond to â¼3.1 MPa for [BMIM][Tf2N] and â¼3.5 MPa for [OMIM][Tf2N].
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 639, Issues 1â2, 15 February 2010, Pages 109-115
Journal: Journal of Electroanalytical Chemistry - Volume 639, Issues 1â2, 15 February 2010, Pages 109-115
نویسندگان
YanLi Guo, Mitsuhiro Kanakubo, Daisuke Kodama, Hiroshi Nanjo,