International Scientific Publications
© 2020 Science Events Ltd
Terms of Use  ·  Privacy Policy
Choose language English French Russian Bulgarian
Conference room
Materials, Methods & Technologies 2020, 22nd International Conference
29 August - 1 September, Burgas, Bulgaria
Call for Papers

Materials, Methods & Technologies, Volume 10, 2016

Elena Fomenko, Elena Rogovenko, Olga Mikhaylova, Alexander Anshits
Pages: 239-253
Published: 1 Jul 2016
Views: 1,404
Downloads: 455
Abstract: The diffusion properties of narrow fractions of cenospheres have been investigated with respect to helium and hydrogen. It has been found that the permeability coefficients for the glass phase of the shells of cenospheres are directly proportional to the content of the glass-forming oxide SiO2 in it. The calculated values of the permeability coefficients follow the general trend with the calculated and experimental data for silicate glasses over a wide range of compositions. The experimental values of the permeability coefficients for the glass phase of the cenosphere shells at a temperature of 280°C exceed the calculated values for helium and hydrogen by a factor of 3‒24 and 12‒111, respectively. For helium at a temperature of 25°C, the experimental values of the permeability coefficients are 11‒1000 times greater than the corresponding calculated values. The selectivity for the cenospheres reaches a high level α(He/H2) = 10‒33.
Keywords: cenospheres, microspheres, silicate glasses, membrane, helium, hydrogen
Download full text

Back to the contents of the volume
By using this site you agree to our Privacy Policy and Terms of Use. We use cookies, including for analytics, personalisation, and ads.