CARBON MOLECULAR-SIEVES WITH STABLE HYDROPHOBIC SURFACES

被引:40
作者
VERMA, SK [1 ]
WALKER, PL [1 ]
机构
[1] PENN STATE UNIV,DEPT MAT SCI & ENGN,UNIV PK,PA 16802
关键词
CARBON MOLECULAR SIEVE; ADSORPTION; DIFFUSION; UPTAKE RATE; O2; AR; INTERACTIONS;
D O I
10.1016/0008-6223(92)90004-G
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The effect of interactions of O2 and H2O 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 of CMS and exhibit an adverse impact on their performance. Treatments of CMS with Cl2 and H-2 were investigated for stabilizing their surfaces. Treatment with H-2 at 5.5 MPa and 150-degrees-C was found to eliminate strong interactions with O2 and H2O by passivating the active sites, thus resulting in a stable CMS surface.
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页码:837 / 844
页数:8
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