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Carbon molecular sieves with stable hydrophobic surfaces

✍ Scribed by S.K. Verma; P.L. Walker Jr.

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
801 KB
Volume
30
Category
Article
ISSN
0008-6223

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✦ Synopsis

The effect of interactions of O2 and Hz0 with CMS surfaces on their performance was studied under ambient conditions by using O2 and Ar as molecular probes. Such interactions deteriorate the adsorption-desorption behavior ofCMS and exhibit an adverse impact on their performance. Treatments of CMS with Cl2 and H2 were investigated for stabilizing their surfaces. Treatment with H2 at 5.5 MPa and 150Β°C was found to eliminate strong interactions with O2 and Hz0 by passivating the active sites, thus resulting in a stable CMS surface.

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