Results of the HPT-experiment critical adsorption on EURECA I

Details Results of the HPT-experiment critical adsorption on EURECA I Results of the HPT-experiment critical adsorption on EURECA I

Aug 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995adspr..16...83t&link_type=abstract

Advances in Space Research, Volume 16, Issue 8, p. 83-86.

Computer Science

4

Scientific paper

The adsorption behavior of a near-critical fluid (SF_6) on a finely dispersed graphitic adsorbent (graphitized carbon black, Vulcan 3-G) has been studied. The surface excess concentration Gamma was measured as a function of temperature along near-critical isochores using a volumetric apparatus housed in a high-precision thermostat (HPT). Five experimental runs (each extending over ca. 30 days) were performed on the EURECA I space platform to avoid gravitational effects on the near-critical bulk fluid. In addition, complementary tests involving systematic changes of the experimental conditions were also performed by sequences of telecommands to test the reliability of the results in the near-critical region. The EURECA results confirm a novel critical adsorption phenomenon, which is probably due to the colloidal state of the adsorbent and is termed critical depletion.

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