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Carbon dioxide-mediated decomposition of hydrogen peroxide in alkaline solutions

 

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Opened Access Carbon dioxide-mediated decomposition of hydrogen peroxide in alkaline solutions
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Author: Rosa Acosta, Miguel Ángel de la
Rosa Acosta, Francisco Fernando de la
Navarro Carruesco, José Antonio
Roncel Gil, Mercedes
Department: Universidad de Sevilla. Departamento de Bioquímica Vegetal y Biología Molecular
Date: 1984
Published in: Journal of the Chemical Society, Faraday Transactions 1, 80, 249-253
Document type: Article
Abstract: Rapid hydrogen peroxide decomposition in aerated alkaline solutions is described, the maximum rate being attained at pH values between 11.5 and 11.7, where the peroxide (pKa = 11.7) is ca. 50% unprotonated. The reaction proceeds with the release of protons and is strictly dependent upon the continuous presence of carbon dioxide, but not of carbonate anions, in the peroxide solutions. The following two-step mechanism is proposed: (1) formation of percarbonic acid (H2CO4 ) by condensation of C02 with the undissociated peroxide (H202 ) and (2) reduction of the acid by perhydroxyl anions (HO;).
Cite: Rosa Acosta, M.A., Rosa Acosta, F.F., Navarro Carruesco, J.A. y Roncel Gil, M. (1984). Carbon dioxide-mediated decomposition of hydrogen peroxide in alkaline solutions. Journal of the Chemical Society, Faraday Transactions 1, 80, 249-253.
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URI: http://hdl.handle.net/11441/36788

DOI: http://dx.doi.org/10.1039/F19848000249

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