Premium
Kinetics of oxidation of sodium dithionite by flow thermal method
Author(s) -
Singh D. K.,
Sharma R. N.,
Srivastava R. D.
Publication year - 1978
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690240211
Subject(s) - sodium dithionite , chemistry , dithionite , aqueous solution , manganese , inorganic chemistry , activation energy , kinetics , triethanolamine , order of reaction , reaction rate constant , analytical chemistry (journal) , organic chemistry , physics , quantum mechanics , enzyme
The homogeneous kinetics and inhibition of sodium dithionite oxidation in an aqueous solution were studied by means of a flow thermal method. Results on the oxidation study of dithionite solutions at 30°C show that the reaction is first order with respect to dithionite and zero order with respect to oxygen. An activation energy of 17.5 kcal/g‐mole has been calculated for this reaction. The inhibiting effects of manganese chloride, manganese sulfate, and triethanolamine were inversely proportional to 0.8, 0.9, and 0.2 power, respectively. A free radical chain mechanism has been proposed, and the rate expressions derived are in good agreement with the experimental data.