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1792589 
Journal Article 
KINETICS AND MECHANISTIC STUDY OF PHOSPHOTUNGSTIC ACID-CATALYSED OXIDATION OF BENZALDEHYDES BY N-BROMOPHTHALIMIDE 
Bharad, JV; Madje, BR; Ubale, MB 
2013 
1 
Oxidation Communications
ISSN: 0209-4541 
36 
1 
50-60 
WOS:000318748400007 
Kinetic investigations in the Keggin type phosphotungstic
acid-catalysed oxidation of benzaldehyde and substituted benzaldehydes by N-bromophthalimide
(NBP) in aqueous acetic acid medium in the presence of mercuric (II) acetate as a scavenger have
been carried out. Oxidation kinetics of benzaldehyde by NBP in the presence of phosphotungstic
acid (PTA) shows a first order dependence on NBP and fractional order on benzaldehydes and PTA.
The variations of ionic strength, Hg(OAC)(2), H+ and phthalimide (reaction product) have
insignificant effect on reaction rate. Activation parameters for the reaction have been evaluated
from the Arrhenius plot by studying the reaction at different temperatures. The rate law has been
derived on the basis of the obtained data. 
kinetics; benzaldehyde; N-bromophthalimide; phosphotungstic acid