Binary Diffusion Coefficients for Gas Mixtures of Propane with Methane and Carbon Dioxide Measured in a Loschmidt Cell Combined with Holographic Interferometry

Zangi P, Rausch MH, Fröba AP (2019)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2019

Journal

International Journal of Thermophysics Springer Verlag (Germany)

Publisher: SPRINGER/PLENUM PUBLISHERS

Book Volume: 40

Article Number: ARTN 18

Journal Issue: 2

DOI: 10.1007/s10765-019-2484-6

Abstract

Binary diffusion coefficients D-12 for the molecular gas systems propane-methane (C3H8-CH4) and propane-carbon dioxide (C3H8-CO2) have been measured with a Loschmidt cell combined with holographic interferometry at (293 and 313)K, between (0.05 and 0.5)MPa, and for different mixture compositions. Improved experimental and evaluation procedures already validated for the noble-gas system helium-krypton have been successfully adapted for the molecular gas systems. For the investigated mixtures, adsorption-desorption processes are superimposed on the diffusion process and increase the achievable uncertainties. This hinders reliable conclusions regarding a concentration dependency of the diffusion coefficient. D-12 clearly increases with increasing temperature and decreasing pressure. At the same pressure, temperature, and C3H8 mole fraction, the diffusion coefficient is larger for C3H8-CH4 than for C3H8-CO2. For both systems, the presented diffusion coefficients are in reasonable agreement with available literature data. In particular, the pressure-dependent trend and the absolute values of D-12 at a given temperature match with recent theoretical data based on ab initio calculations in the zero-density limit for both systems.

Authors with CRIS profile

Pouria Zangi Erlangen Graduate School in Advanced Optical Technologies Michael Rausch Institute of Advanced Optical Technologies - Thermophysical Properties (AOT-TP) Andreas Paul Fröba Institute of Advanced Optical Technologies - Thermophysical Properties (AOT-TP)

Additional Organisation(s)

Erlangen Graduate School in Advanced Optical Technologies

Related research project(s)

Accurate determination of binary gas diffusion coefficients by using laser-optical measurement methods and molecular dynamics simulations April 1, 2017 - March 31, 2020

How to cite

APA:

Zangi, P., Rausch, M.H., & Fröba, A.P. (2019). Binary Diffusion Coefficients for Gas Mixtures of Propane with Methane and Carbon Dioxide Measured in a Loschmidt Cell Combined with Holographic Interferometry. International Journal of Thermophysics, 40(2). https://dx.doi.org/10.1007/s10765-019-2484-6

MLA:

Zangi, Pouria, Michael Heinrich Rausch, and Andreas Paul Fröba. "Binary Diffusion Coefficients for Gas Mixtures of Propane with Methane and Carbon Dioxide Measured in a Loschmidt Cell Combined with Holographic Interferometry." International Journal of Thermophysics 40.2 (2019).

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