Adsorption of hydrogen sulfide at the aqueous solution interface. [Pressures up to 3. 0 MPa; 25--130/sup 0/C]

Journal Article · Thu Jan 01 00:00:00 EST 1976 · J. Can. Pet. Technol.; (United States)

OSTI ID:7314309

Strathdee, G G; Given, R M

The surface tension of H/sub 2/S-saturated water has been measured at pressures up to 3.0 MPa and at temperatures within the range 25 to 130/sup 0/C. Monolayer coverage of the surface of the aqueous solution by H/sub 2/S occurred at about one-half the saturation pressure, P/sub s/, of liquid H/sub 2/S at a given temperature. Multilayer condensation increased significantly as P/sub s/ was approached. Interfacial tensions between liquid H/sub 2/S and aqueous H/sub 2/S solutions were measured between 30 and 40/sup 0/C. These data were used to show that the spreading coefficients, S/sub 2/, for liquid H/sub 2/S on water were positive and that liquid H/sub 2/S spread on the aqueous phase. The standard thermodynamic properties for the adsorption of H/sub 2/S on water were calculated at the zero-coverage limit between 25 and 130/sup 0/C. The unusually high adsorption coefficient for H/sub 2/S on water was found to be due to a large, positive entropy of adsorption.

• Research Organization: Whiteshell Nuclear Research Establishment, Pinawa, Manitoba
• OSTI ID: 7314309
• Journal Information: J. Can. Pet. Technol.; (United States), Vol. 80:15
• Country of Publication: United States
• Language: English

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07 ISOTOPES AND RADIATION SOURCES
37 INORGANIC
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PHYSICAL AND ANALYTICAL CHEMISTRY
HEAVY WATER
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HYDROGEN SULFIDES
ADSORPTION
SURFACE TENSION
AQUEOUS SOLUTIONS
INTERFACES
MEDIUM TEMPERATURE
SURFACTANTS
THERMODYNAMIC PROPERTIES
CHALCOGENIDES
DISPERSIONS
HYDROGEN COMPOUNDS
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PHYSICAL PROPERTIES
SOLUTIONS
SORPTION
SULFIDES
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