THE INDUCED DECOMPOSITION OF tert-BUTYL HYDROPEROXIDE

1964 ◽  
Vol 42 (12) ◽  
pp. 2754-2757 ◽  
Author(s):  
R. Hiatt ◽  
John Clipsham ◽  
Teunis Visser

In a study of the "induced" decomposition of hydroperoxides by alkoxy radicals, tert-butyl hydroperoxide has been decomposed by the action of di-tert-butyl peroxyoxalate at 45°. The homolytic cleavage of peroxalate to tert-butoxy was unaffected by the presence of hydroperoxide and 7 to 10 molecules of hydroperoxide were destroyed for each radical thus produced. The kinetics have been analyzed and a mechanism developed which has significance for any system containing peroxy radicals.


1977 ◽  
Vol 55 (10) ◽  
pp. 1644-1652 ◽  
Author(s):  
Joseph Hector Bernard Chenier ◽  
James Anthony Howard ◽  
John Charles Tait

The initial reaction of cupric dialkyldithiophosphates and dialkyldithiocarbamates with tert-butyl hydroperoxide and α-cumyl hydroperoxide is a free radical chain process. Initiation is achieved by a redox reaction between the complex and the hydroperoxide to give alkoxy and alkylperoxy radicals. The alkoxy radicals then abstract a hydrogen from excess hydroperoxide to give alkylperoxy radicals. The cupric complexes are converted to copper sulphate by reaction with peroxy radicals while the hydroperoxide is reduced to alcohol. About 5 mol of hydroperoxide are decomposed by each mole of complex. The decomposition of tert-butyl hydroperoxide then stops whereas complete destruction of α-cumene hydroperoxide occurs by a heterogeneous ionic reaction.The kinetics of the initial reaction are second-order for both complexes. The dithiophosphate reaction is first-order in each reactant while the dithiocarbamate reaction is zero-order in the complex concentration and second-order in the hydroperoxide concentration. Simple kinetics, however, only hold for the initial rates of complex disappearance. Total dithiophosphate decomposition exhibits three stages, an initial fast reaction followed by an induction period and a rapid third stage. The concentration–time profile for dithiocarbamate decomposition is quite different and the overall rate of reaction in some instances increases as the complex concentration decreases.



1990 ◽  
Vol 80 (2) ◽  
pp. 226-232
Author(s):  
Tomoaki Matsuo ◽  
Yumiko Kashiwaki ◽  
Saburo Itoo


2012 ◽  
Vol 14 (13) ◽  
pp. 3384-3387 ◽  
Author(s):  
Erbo Shi ◽  
Ying Shao ◽  
Shulin Chen ◽  
Huayou Hu ◽  
Zhaojun Liu ◽  
...  


2021 ◽  
Vol 154 (16) ◽  
pp. 164306
Author(s):  
Anne S. Hansen ◽  
Rachel M. Huchmala ◽  
Emil Vogt ◽  
Mark A. Boyer ◽  
Trisha Bhagde ◽  
...  


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