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Type: Artigo de periódico
Title: Kinetic study of the decomposition of hydrogen peroxide catalysed by Co(II) acetylacetonate supported on a silica-propylpiperazine matrix
Author: Oliveira, SF
Espinola, JGP
Lemus, WES
de Souza, AG
Airoldi, C
Abstract: The catalytic decomposition of hydrogen peroxide by Co(II)acetylacetonate supported on a propylpiperazine-silica matrix (Co(II)(acac)-PPS) was studied in aqueous media. The results showed that the reaction was first order in H2O2. It was found that the reaction rate was pH dependent with a maximum at around pH = 8. Activation parameters were determined in the temperature range 30-45 degrees C. The low value obtained for the activation energy is in accordance with the proposed free-radical mechanism. (C) 1998 Elsevier Science B.V.
Subject: catalytic decomposition
hydrogen peroxide
silica gel
Country: Holanda
Editor: Elsevier Science Bv
Citation: Colloids And Surfaces A-physicochemical And Engineering Aspects. Elsevier Science Bv, v. 136, n. 41671, n. 151, n. 154, 1998.
Rights: fechado
Identifier DOI: 10.1016/S0927-7757(97)00318-X
Date Issue: 1998
Appears in Collections:Unicamp - Artigos e Outros Documentos

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