H2N2V1, Main, Exploration, bibRecord, 001B58

A spectrophotometric study of hydrogen sulphide ionisation in aqueous solutions to 350°C

Identifieur interne : 001B58 ( Main/Exploration ); précédent : 001B57; suivant : 001B59

A spectrophotometric study of hydrogen sulphide ionisation in aqueous solutions to 350°C

Auteurs : O. M. Suleimenov [Suisse] ; T. M. Seward [Suisse]

Source :

Geochimica et Cosmochimica Acta [ 0016-7037 ] ; 1997.

RBID : ISTEX:9AC0E7A9DE6329E09B6CB3005C854DFC5EF28262

English descriptors

Teeft :
- Absorbance, Absorbance matrix, Amino reagent, Aqueous solutions, Barbero, Bulk composition, Calibration plot, Carrier solution, Cavity radius, Chem, Concentration range, Coulometric generator, Deoxygenated nitrogen, Elli, Elsevier science, Equilibrium constants, Experimental data, Faraday trans, First ionisation, Good agreement, Heat capacity, High pressure, High temperatures, Higher temperatures, Hydrogen sulfide, Hydrogen sulphide, Hydrogen sulphide ionisation process, Hydrogen sulphide solution, Hydrosulphide, Hydrosulphide anion, Hydrothermal, Hydrothermal solutions, Hydrothermal systems, Important role, Ionisation, Lower energies, Mathematical treatment, Matrix, Maximum absorbance, Molar, Molar absorptivities, Molar absorptivity, Molar gibbs, Objective function, Optical cell, Optical path length, Partial molar heat capacities, Partial molar volume, Partial vacuum, Phosphoric acid, Pressure correction, Pressure effect, Reference state, Reference temperature, Regression coefficient, Regression coefficients, Regression results, Sapphire windows, Series expansion, Software package, Solvation environment, Solvent cavity, Spectrophotometric, Spectrophotometric measurements, Spectrophotometric study, Stock solution, Suleimenov, Sulphide, Sulphide solutions, Temperature dependence, Temperature range, Thermodynamic, Thermodynamic data, Thermodynamic functions, Thermodynamic information, Thermodynamic properties, Transition metals, Ultrasonic bath, Ultraviolet region, Unknown dispersion, Vapour, Vapour pressures, Water bath, Water vapour pressure, Water vapour pressures, Wavelength range.

Abstract

Abstract: The ultraviolet spectra of dilute aqueous H2S HS− solutions have been measured up to 350°C. From these data, the molal equilibrium constant, K1, for the first ionisation of H2S has been calculated. Over the temperature range from 25 to 350°C at saturated vapour pressures, K1 varies from 6.99 (25°C) to 8.89 (350°C). Standard thermodynamic data for H2S (aq) and HS− are presented for the temperature range 25 to 300°C at 100 bar. The shift of the charge-transfer-to-solvent spectrum of HS− with increasing temperature is attributable to an expansion of hydrosulphide ion solvation environment.

Url:

https://api.istex.fr/ark:/67375/6H6-50PRKDG8-N/fulltext.pdf

DOI: 10.1016/S0016-7037(97)00291-3

Affiliations:

Suisse

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Le document en format XML

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<term>Barbero</term>
<term>Bulk composition</term>
<term>Calibration plot</term>
<term>Carrier solution</term>
<term>Cavity radius</term>
<term>Chem</term>
<term>Concentration range</term>
<term>Coulometric generator</term>
<term>Deoxygenated nitrogen</term>
<term>Elli</term>
<term>Elsevier science</term>
<term>Equilibrium constants</term>
<term>Experimental data</term>
<term>Faraday trans</term>
<term>First ionisation</term>
<term>Good agreement</term>
<term>Heat capacity</term>
<term>High pressure</term>
<term>High temperatures</term>
<term>Higher temperatures</term>
<term>Hydrogen sulfide</term>
<term>Hydrogen sulphide</term>
<term>Hydrogen sulphide ionisation process</term>
<term>Hydrogen sulphide solution</term>
<term>Hydrosulphide</term>
<term>Hydrosulphide anion</term>
<term>Hydrothermal</term>
<term>Hydrothermal solutions</term>
<term>Hydrothermal systems</term>
<term>Important role</term>
<term>Ionisation</term>
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<term>Mathematical treatment</term>
<term>Matrix</term>
<term>Maximum absorbance</term>
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<term>Molar absorptivities</term>
<term>Molar absorptivity</term>
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<term>Phosphoric acid</term>
<term>Pressure correction</term>
<term>Pressure effect</term>
<term>Reference state</term>
<term>Reference temperature</term>
<term>Regression coefficient</term>
<term>Regression coefficients</term>
<term>Regression results</term>
<term>Sapphire windows</term>
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<term>Software package</term>
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<term>Spectrophotometric</term>
<term>Spectrophotometric measurements</term>
<term>Spectrophotometric study</term>
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<term>Suleimenov</term>
<term>Sulphide</term>
<term>Sulphide solutions</term>
<term>Temperature dependence</term>
<term>Temperature range</term>
<term>Thermodynamic</term>
<term>Thermodynamic data</term>
<term>Thermodynamic functions</term>
<term>Thermodynamic information</term>
<term>Thermodynamic properties</term>
<term>Transition metals</term>
<term>Ultrasonic bath</term>
<term>Ultraviolet region</term>
<term>Unknown dispersion</term>
<term>Vapour</term>
<term>Vapour pressures</term>
<term>Water bath</term>
<term>Water vapour pressure</term>
<term>Water vapour pressures</term>
<term>Wavelength range</term>
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<front><div type="abstract" xml:lang="en">Abstract: The ultraviolet spectra of dilute aqueous H2S HS− solutions have been measured up to 350°C. From these data, the molal equilibrium constant, K1, for the first ionisation of H2S has been calculated. Over the temperature range from 25 to 350°C at saturated vapour pressures, K1 varies from 6.99 (25°C) to 8.89 (350°C). Standard thermodynamic data for H2S (aq) and HS− are presented for the temperature range 25 to 300°C at 100 bar. The shift of the charge-transfer-to-solvent spectrum of HS− with increasing temperature is attributable to an expansion of hydrosulphide ion solvation environment.</div>
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A spectrophotometric study of hydrogen sulphide ionisation in aqueous solutions to 350°C

A spectrophotometric study of hydrogen sulphide ionisation in aqueous solutions to 350°C

Source :

English descriptors

Abstract

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Pour manipuler ce document sous Unix (Dilib)

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