Determination of Binary Gas Diffusion Coefficients Using Digital Holographic Interferometry

2010 ◽  
Vol 55 (9) ◽  
pp. 3318-3321 ◽  
Author(s):  
Maogang He ◽  
Ying Guo ◽  
Qiu Zhong ◽  
Ying Zhang
Keyword(s):  
Holographic Interferometry ◽  
Diffusion Coefficients ◽  
Gas Diffusion

Determination of gas diffusion coefficients in saturated porous media: He and CH4 diffusion in Boom Clay

2013 ◽  
Vol 83-84 ◽  
pp. 217-223 ◽  
Author(s):  
Elke Jacops ◽  
Geert Volckaert ◽  
Norbert Maes ◽  
Eef Weetjens ◽  
Joan Govaerts
Keyword(s):  
Porous Media ◽  
Diffusion Coefficients ◽  
Gas Diffusion ◽  
Saturated Porous Media ◽  
Boom Clay

Determination of precise and reliable gas diffusion coefficients by gas chromatography

1976 ◽  
Vol 98 (17) ◽  
pp. 5101-5107 ◽  
Author(s):  
Frank Yang ◽  
Stephen Hawkes ◽  
F. T. Lindstrom
Keyword(s):  
Gas Chromatography ◽  
Diffusion Coefficients ◽  
Gas Diffusion

scholarly journals Note: Determination of effective gas diffusion coefficients of stainless steel films with differently shaped holes using a Loschmidt diffusion cell

2010 ◽  
Vol 81 (4) ◽  
pp. 046104 ◽  
Author(s):  
N. G. C. Astrath ◽  
J. Shen ◽  
F. B. G. Astrath ◽  
J. Zhou ◽  
C. Huang ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Diffusion Coefficients ◽  
Gas Diffusion ◽  
Diffusion Cell

Determination of the binary gas diffusion coefficients using large lateral shearing interferometry

Optik ◽  
2018 ◽  
Vol 156 ◽  
pp. 825-833 ◽  
Author(s):  
Fang Yue ◽  
Peifang Fu ◽  
Yang Liu ◽  
Kang Bie ◽  
Huaichun Zhou
Keyword(s):  
Diffusion Coefficients ◽  
Gas Diffusion ◽  
Shearing Interferometry ◽  
Lateral Shearing ◽  
Lateral Shearing Interferometry

scholarly journals A Novel Time Lag Method for the Analysis of Mixed Gas Diffusion in Polymeric Membranes by On-Line Mass Spectrometry: Pressure Dependence of Transport Parameters

Membranes ◽  
2018 ◽  
Vol 8 (3) ◽  
pp. 73 ◽  
Author(s):  
Marcello Monteleone ◽  
Elisa Esposito ◽  
Alessio Fuoco ◽  
Marek Lanč ◽  
Kryštof Pilnáček ◽  
...  
Keyword(s):  
Diffusion Coefficient ◽  
Pressure Dependence ◽  
Diffusion Coefficients ◽  
Gas Diffusion ◽  
Unique Determination ◽  
Mixed Gas ◽  
Polymer Of Intrinsic Microporosity ◽  
On Line ◽  
Intrinsic Microporosity

This paper presents a novel method for transient and steady state mixed gas permeation measurements, using a quadrupole residual gas analyser for the on-line determination of the permeate composition. The on-line analysis provides sufficiently quick response times to follow even fast transient phenomena, enabling the unique determination of the diffusion coefficient of the individual gases in a gas mixture. Following earlier work, the method is further optimised for higher gas pressures, using a thin film composite and a thick dense styrene-butadiene-styrene (SBS) block copolymer membrane. Finally, the method is used to calculate the CO2/CH4 mixed gas diffusion coefficients of the spirobisfluorene-based polymer of intrinsic microporosity, PIM-SBF-1. It is shown that the modest pressure dependence of the PIM-SBF-1 permeability can be ascribed to a much stronger pressure dependence of the diffusion coefficient, which partially compensates the decreasing solubility of CO2 with increasing pressure, typical for the strong sorption behaviour in PIMs. The characteristics of the instrument are discussed and suggestions are given for even more versatile measurements under stepwise increasing pressure conditions. This is the first report on mixed gas diffusion coefficients at different pressures in a polymer of intrinsic microporosity.

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