Thommes M (1994)
Publication Type: Journal article, Original article
Subtype: other
Publication year: 1994
Book Volume: 98
Pages Range: 477-81-81
Journal Issue: 3
The adsorption behavior of a near-crit. fluid (SF6) on a finely dispersed graphitic adsorbent (graphitized carbon black; Vulcan 3-G) was studied. The surface excess concn. Γ was measured by approaching the crit. point along near-crit. isochores using a volumetric technique. From the scaling theory of crit. adsorption by Fisher and de Gennes it is expected that Γ diverges at the crit. point. At temps. well above criticality of the fluid (T-Tc ≥ 3 K) the authors found the expected increase of T with decreasing T; however, closer to Tc the adsorption does not increase further but decreases sharply for T → Tc. This unexpected behavior was also found when the expt. was repeated under microgravity conditions on the space platform EURECA I. A similar max. in Γ(T) was also obsd. for SF6 adsorbed in a mesoporous controlled-pore glass (CPG-10) with 31 nm mean pore diam. [on SciFinder(R)]
APA:
Thommes, M. (1994). Critical adsorption of sulfur hexafluoride on a finely divided graphite substrate. Berichte der Bunsengesellschaft für physikalische Chemie, 98(3), 477-81-81. https://dx.doi.org/10.1002/bbpc.19940980346
MLA:
Thommes, Matthias. "Critical adsorption of sulfur hexafluoride on a finely divided graphite substrate." Berichte der Bunsengesellschaft für physikalische Chemie 98.3 (1994): 477-81-81.
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