Measurements of the Mutual Diffusion Coefficients of Gases by the Taylor Method : 6th Report : Measurements on the H2-air, H2-N2 and H2-O2 Systems

• Published in: Transactions of the Japan Society of Mechanical Engineers Series B Vol. 67; no. 653; pp. 189 - 196
• Main Authors: MATSUNAGA, Naoki, HORI, Mario, NAGASHIMA, Akira
• Format: Journal Article
• Language: Japanese
• Published: The Japan Society of Mechanical Engineers 25.01.2001
• Subjects: O2
• ISSN: 0387-5016; 1884-8346
• DOI: 10.1299/kikaib.67.189

The mutual diffusion coefficients of H2 into air and its component gases (N2 and O2) have been measured in the temperature range 30∼180°C and at atmospheric pressure by the use of the Taylor dispersion method. For the H2-N2 system, the composition dependence of the mutual diffusion coefficient has been studied by using both H2 and N2 as the carrier gas. The mutual diffusion coefficients for the H2-air and H2-N2 systems are almost the same and smaller than that for the H2-O2 system by about 5%. The present data for the H2-N2 system, corrected to equimolar composition, agree well with the accurate data by the groups of P. J. Dunlop and of R. J. J. Van Heijningen.