Characterization of the flow properties in Vycor by combining dynamic and scattering techniques

Authors
Stefanopoulos, KL Beltsios, K Makri, PK Steriotis, TA Mitropoulos, AC Kanellopoulos, NK
Citation
Kl. Stefanopoulos et al., Characterization of the flow properties in Vycor by combining dynamic and scattering techniques, PHYSICA B, 276, 2000, pp. 477-478
Citations number
6
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
276
Year of publication
2000
Pages
477 - 478
Database
ISI
SICI code
0921-4526(200003)276:<477:COTFPI>2.0.ZU;2-O
Abstract
Vycor 7930 porous glass was studied by adsorption in conjunction with small -angle scattering and by relative permeability, By loading Vycor porous gla ss with two different adsorbates, (H2O, CH2 Br-2), it was found from scatte ring experiments that the defractalization process in faster for H2O than f or CH2 Br-2. In addition, when measuring dynamic properties (such as relati ve permeability of He) the systems are found markedly different. It was con cluded that the surface fractality influences both equilibrium (adsorption) and dynamic (permeability) processes. (C) 2000 Elsevier Science B.V. All r ights reserved.