Temperature dependence of kinetics and diffusion coefficients for ferrocene/ferricenium in ammonium-imide ionic liquids

2006 ◽  
Vol 51 (7) ◽  
pp. 1178-1183 ◽  
Author(s):  
Masahiko Matsumiya ◽  
Misato Terazono ◽  
Kiyotaka Tokuraku
Keyword(s):  
Ionic Liquids ◽  
Temperature Dependence ◽  
Diffusion Coefficients ◽  
And Diffusion

scholarly journals Assessment of VOC absorption in hydrophobic ionic liquids: Measurement of partition and diffusion coefficients and simulation of a packed column

2019 ◽  
Vol 360 ◽  
pp. 1416-1426 ◽  
Author(s):  
Alfredo-Santiago Rodriguez Castillo ◽  
Pierre-François Biard ◽  
Solène Guihéneuf ◽  
Ludovic Paquin ◽  
Abdeltif Amrane ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Diffusion Coefficients ◽  
Packed Column ◽  
Hydrophobic Ionic Liquids ◽  
And Diffusion

scholarly journals Swelling and Diffusion in Polymerized Ionic Liquids-Based Hydrogels

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1834
Author(s):  
Ann Jastram ◽  
Tobias Lindner ◽  
Christian Luebbert ◽  
Gabriele Sadowski ◽  
Udo Kragl
Keyword(s):  
Ionic Liquids ◽  
Diffusion Coefficients ◽  
Diffusion Processes ◽  
Swelling Properties ◽  
Apparent Diffusion Coefficients ◽  
Tissue Replacement ◽  
Medical Sector ◽  
Apparent Diffusion ◽  
Weighted Magnetic Resonance Imaging ◽  
And Diffusion

Hydrogels are one of the emerging classes of materials in current research. Besides their numerous applications in the medical sector as a drug delivery system or in tissue replacement, they are also suitable as irrigation components or as immobilization matrices in catalysis. For optimal application of these compounds, knowledge of the swelling properties and the diffusion mechanisms occurring in the gels is mandatory. This study is focused on hydrogels synthesized by radical polymerization of imidazolium-based ionic liquids. Both the swelling and diffusion behavior of these hydrogels were investigated via gravimetric swelling as well as sorption experiments implemented in water, ethanol, n-heptane, and tetrahydrofuran. In water and ethanol, strong swelling was observed while the transport mechanism deviated from Fickian-type behavior. By varying the counterion and the chain length of the cation, their influences on the processes were observed. The calculation of the diffusion coefficients delivered values in the range of 10−10 to 10−12 m2 s−1. The gravimetric results were supported by apparent diffusion coefficients measured through diffusion-weighted magnetic resonance imaging. A visualization of the water diffusion front within the hydrogel should help to further elucidate the diffusion processes in the imidazolium-based hydrogels.

Temperature Dependence of Gas and Vapor Diffusion Coefficients.

1963 ◽  
Vol 8 (2) ◽  
pp. 168-169 ◽  
Author(s):  
Spencer L. Seager ◽  
Lyle R. Geertson ◽  
J. Calvin Giddings
Keyword(s):  
Temperature Dependence ◽  
Diffusion Coefficients ◽  
Vapor Diffusion
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