Influence of zeolites in PDMS membranes. Pervaporation of water/alcohol mixtures

Journal Article · Thu Aug 31 04:00:00 EDT 1995 · Journal of Physical Chemistry

DOI:https://doi.org/10.1021/j100035a024· OSTI ID:105276

Vankelecom, I F.J.; Depre, D; De Beukelaer, S; Uytterhoeven, J B ^[1]

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1. Centrum voor Oppervlaktechemie en Katalyse, Leuven (Belgium)

A strong influence of the zeolite was found on the pervaporation of alcohol/water mixtures using filled PDMS membranes. In all cases, the zeolites reduced the swelling of the PDMS. Incorporation of the hydrophilic zeolite Y increased water fluxes, while ZSM-5 reduced both water and alcohol fluxes due to a partial retention of these molecules in the zeolite. For branched alcohols, the extreme importance of diffusion led to a strong dependency of selectivity and flux on temperature. Compared with commercially available PDMS membranes, better results were realized with the self-prepared membranes. 19 refs., 7 figs., 1 tab.

• Sponsoring Organization: USDOE
• OSTI ID: 105276
• Journal Information: Journal of Physical Chemistry, Journal Name: Journal of Physical Chemistry Journal Issue: 35 Vol. 99; ISSN JPCHAX; ISSN 0022-3654
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
40 CHEMISTRY
ALCOHOLS
AQUEOUS SOLUTIONS
MEMBRANES
MIXTURES
SEPARATION PROCESSES
SWELLING
USES
WATER
ZEOLITES