Gas Diffusion in Porous Solids-Wicke-Kallenbach and Graham's Diffusion Cell

0166758 - UCHP-M 20030075 RIV SK eng C - Conference Paper (international conference)
Soukup, Karel - Šolcová, Olga
Gas Diffusion in Porous Solids-Wicke-Kallenbach and Graham's Diffusion Cell.
Proceedings. Bratislava: Slovak University of Technology, 2003 - (Markoš, J.; Štefuca, V.), s. 188. ISBN 80-227-1889-0.
[International Conference of Slovak Society of Chemical Engineering /30./. Tatranské Matliare (SK), 26.05.2003-30.05.2003]
R&D Projects: GA ČR GA104/01/0546
Institutional research plan: CEZ:AV0Z4072921
Keywords : diffusion * Wicke-Kallenbach cell * mass transfer
Subject RIV: CF - Physical ; Theoretical Chemistry

Graham's diffusion cell is based on validity of Graham's law. Cell arrangement enables to stop the gas inlet and outlet of the one cell compartment and to determine the net volumetric diffusion flux through the tested porous material. This cell overcomes both disadvantages of the classic Wicke-Kallenbach cell, but in requires (because of reliable determination of net molar diffusion flux density) sufficient different molecular weights between gases and consecutively the occurence of unwanted surface diffusion.
Permanent Link: http://hdl.handle.net/11104/0063867