Differential pulse voltammetry was used to detect 10 ppb NO2- in fused alkali metal nitrates. The technique was employed for studying the thermal decompn. kinetics of KNO3 and NaNO3 melts under O at 510-620 K. A pseudo-zero-order process was found, characterized by a kinetic const. of 7.6 10-11 mol/kg/s at 538 K and by an apparent activation energy of 39 kJ/mol. A mechanism of NO3- decompn. is proposed, and the equil. const. and H value for the reaction are calcd. and compared with literature data.
Differential Pulse Voltammetry as 'in situ' Monitoring Technique for Thermal Decomposition Kinetics of Nitrate Melts.
PALMISANO, Francesco;SABBATINI, Luigia;
1984-01-01
Abstract
Differential pulse voltammetry was used to detect 10 ppb NO2- in fused alkali metal nitrates. The technique was employed for studying the thermal decompn. kinetics of KNO3 and NaNO3 melts under O at 510-620 K. A pseudo-zero-order process was found, characterized by a kinetic const. of 7.6 10-11 mol/kg/s at 538 K and by an apparent activation energy of 39 kJ/mol. A mechanism of NO3- decompn. is proposed, and the equil. const. and H value for the reaction are calcd. and compared with literature data.File in questo prodotto:
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