Published 1964
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Isotopic fractionation of sulphur during the oxidation cf sulphur dioxide in the presence of nitrogen oxides
- 1. Commissariat a l'Energie Atomique, Saclay (France). Centre d'Etudes Nucleaires
Description
The object of this study is to discover whether nitrous fumes can catalyze the sulphur exchange reaction between sulphur dioxide and sulphuric acid in this latter medium. During the oxidation of the sulphur dioxide, the vapour phase concentration of heavy sulphur decreases. The experiments carried out with marked sulphuric acid H235SO4 show however that sulphur does not exchange at a measurable rate at ordinary temperatures. The isotopic fractionation observed cannot thus be explained by a movement towards the thermodynamic equilibrium. The absence of any exchange is interpreted in the light of the mechanisms proposed for the catalytic oxidation of sulphur dioxide. (authors)
Availability note (English)
Available from INIS in electronic formAbstract (French)
Le but de cette etude est de chercher si les vapeurs nitreuses peuvent catalyser la reaction d'echange du soufre entre l'anhydride sulfureux et l'acide sulfur ique en milieu sulfurique. Au cours de l'oxydation de l'anhydride.la phase vapeur s'appauvrit en soufre lourd. Mais les experiences realisees avec de l'acide sulfurique marque H235SO4 montrent que le soufre n'echange pas avec une vitesse mesurable a temperature ordinaire. Le fractionnement isotopique observe ne peut donc etre explique par une evolution vers l'equilibre thermodynamique. L'absence d'echange est interpretee a la lumiere des mecanismes proposes pour l'oxydation catalytique de l'anhydride sulfureux. (auteurs)Files
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Additional details
Additional titles
- Original title (French)
- Fractionnement isotopique du soufre au cours de l'oxydation de l'anhydride sulfureux, en presence d'oxydes d'azote
Publishing Information
- Imprint Pagination
- 20 p.
- Report number
- CEA-R--2610
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 37017804
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- ANHYDRIDES; CATALYSIS; FEASIBILITY STUDIES; ISOTOPIC EXCHANGE; NITROGEN OXIDES; OXIDATION; SULFUR; SULFUR DIOXIDE; SULFURIC ACID
- Descriptors DEC
- CHALCOGENIDES; CHEMICAL REACTIONS; ELEMENTS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; NITROGEN COMPOUNDS; NONMETALS; OXIDES; OXYGEN COMPOUNDS; SULFUR COMPOUNDS; SULFUR OXIDES
Optional Information
- Notes
- 9 refs.