Aging study of carbon molecular sieve membranes

• Type: Article in International Scientific Journal
• Date: 2008

Authors

S. Lagorsse (Author) Other; F. D. Magalhães (Author) FEUP; A. Mendes (Author) FEUP

Journal

Title: Journal of Membrane Science

Vol. 310

Pages: 494-502

ISSN: 0376-7388

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 27 Citations

ISI Web of Science

Scopus - 43 Citations

INSPEC

COMPENDEX

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

CORDIS: Technological sciences > Technology

Other information

Authenticus ID: P-004-0XX

DOI: 10.1016/j.memsci.2007.11.025

Abstract (EN): Further insight into the impact of air and humidity exposure on carbon molecular sieve membranes (CMSM) is provided. A CMSM was exposed to water vapor and to different dry environments (air, oxygen, nitrogen, propylene, etc.) for several months and the performance stability with time was analyzed periodically. In an effort to better understand the effect of oxygen on the fresh CMSM, regeneration at high temperature, used to remove some oxygen surface groups, was conducted I year after fabrication. The impact of oxygen removal from the surface on adsorption equilibrium, kinetic transport and pore structure is considered. Membrane aging as a result of oxygen adsorption was investigated on the heat-treated sample. This is the first time that oxygen chemisorption uptake rates have been measured on CMSM. Passivation methods and regeneration procedures on CMSM are also discussed.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9