ISSN:
1572-9567
Keywords:
activity-composition relations
;
aqueous fluid mixtures
;
hydrogen fugacity sensor
;
H2O fugacity buffer
;
oxygen fugacity sensor
;
high pressures
;
high temperatures
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Several chemical techniques have recently been developed for measuring and controlling the fugacitiesf O 2,f H 2,f H 2 O, andf HCl in supercritical aqueous fluids. Experimental samples consisting of fluid components and solid chemical “sensors” or “buffers” are sealed in H2-permeable noble metal (Pt or Ag Pd alloy) capsules and reacted at high pressure and temperature, Hydrogen diffusion through the walls of the capsule(s) allowsf H 2 to be controlled or measured. After quenching, the fluids and solids are analyzed to quantify one or more thermodynamic properties of interest. Methods for determining the activity Composition relations of H2O in aqueous fluid mixtures are discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01441508
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