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- W2023372982 endingPage "1975" @default.
- W2023372982 startingPage "1971" @default.
- W2023372982 abstract "The kinetics are described of the oxidation of VIV in the sulphuric acid catalyst system containing vanadium oxides in molten potassium pyrosulphate. The rate of absorption is proportional to the square root of the oxygen partial pressure and directly proportional to the mole fraction of VIV. The activation energy is 40·6 kJ/gmol. It is suggested that the reoxidation reaction is diffusion controlled, and order of magnitude calculations indicate that it is confined to a surface layer in the melt approximately 900 Å in thickness. On décrit la cynétique de l'oxydation de VIV dans un systéme de catalyse d'acide sulfurique contenant des oxydes de vanadium dans du pyrosulfate de potassium fondu. Le taux d'absorption est proportionnel à la racine carrée de la pression partielle d'oxygène et directement proportionnel à la fraction de molécule de VIV. L'énergie d'activation est de 40,6 kJ/gmol. Il est suggéré que la réaction de réoxydation est controlée par la diffusion et les calculs d'ordre de grandeur indiquent qu'elle est restreinte à une couche de surface dans la fusion d'une épaisseur d'environ 900 Ångstroms. Es wird die Kinetik der Oxydation von VIV im Schwefelsäurekatalysatorsystem, das Vanadiumoxyde in geschmolzenem Kaliumpyrosulfat enthält, beschrieben. Die Absorptions-geschwindigkeit ist proportional der Quadratwurzel asu dem Sauerstoffteildruck und direkt proportional dem Molbruch von VIV. Die Aktivierungsenergie ist 40,6 kJ/gmol. Es wird die Meinung geäussert, dass die Reoxydationsreaktion durch die Diffusion gesteuert wird, und Grössenordnungsberechnungen deuten darauf hin, dass sie auf eine Oberflächenschicht in der Schmelze von etwa 900 Ångstrom Dicke beschränkt ist." @default.
- W2023372982 created "2016-06-24" @default.
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- W2023372982 date "1971-01-01" @default.
- W2023372982 modified "2023-10-15" @default.
- W2023372982 title "Sulphur dioxide oxidation kinetics: The absorption of oxygen in V2O5—potassium pyrosulphate melts" @default.
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- W2023372982 doi "https://doi.org/10.1016/0009-2509(71)80035-0" @default.
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