Decomposition of hydrogen peroxide by haemin: Dependence of the reaction velocity on pH

M. L. Kremer

doi:10.1039/tf9656101453

Decomposition of hydrogen peroxide by haemin: Dependence of the reaction velocity on pH

M. L. Kremer^*

^*Corresponding author for this work

Institute of Chemistry

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Abstract

The dependence of the rate of the haemin-catalyzed decomposition of H ₂O₂ on pH was investigated. The mechanism which accounted for the results was (Equation Presented) Individual rate constants have been calculated: k₁ = 3.85 x 10² M^-1 min ^-1; k₃ = 2.9min^-1. K_A was estimated to be ≈10^-4 M and k₂≈1.3 x 10³ min ^-1. Under comparable conditions haemin is 20 times inferior to Fe³⁺ ion as a catalyst for the decomposition of H₂O ₂. The effect has been attributed to the lower value of K_A for haemin than for Fe³⁺ ion.

Original language	English
Pages (from-to)	1453-1458
Number of pages	6
Journal	Transactions of the Faraday Society
Volume	61
DOIs	https://doi.org/10.1039/tf9656101453
State	Published - 1965

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title = "Decomposition of hydrogen peroxide by haemin: Dependence of the reaction velocity on pH",

abstract = "The dependence of the rate of the haemin-catalyzed decomposition of H 2O2 on pH was investigated. The mechanism which accounted for the results was (Equation Presented) Individual rate constants have been calculated: k1 = 3.85 x 102 M-1 min -1; k3 = 2.9min-1. KA was estimated to be ≈10-4 M and k2≈1.3 x 103 min -1. Under comparable conditions haemin is 20 times inferior to Fe3+ ion as a catalyst for the decomposition of H2O 2. The effect has been attributed to the lower value of KA for haemin than for Fe3+ ion.",

author = "Kremer, \{M. L.\}",

year = "1965",

doi = "10.1039/tf9656101453",

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publisher = "Royal Society of Chemistry",

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T1 - Decomposition of hydrogen peroxide by haemin

T2 - Dependence of the reaction velocity on pH

AU - Kremer, M. L.

PY - 1965

Y1 - 1965

N2 - The dependence of the rate of the haemin-catalyzed decomposition of H 2O2 on pH was investigated. The mechanism which accounted for the results was (Equation Presented) Individual rate constants have been calculated: k1 = 3.85 x 102 M-1 min -1; k3 = 2.9min-1. KA was estimated to be ≈10-4 M and k2≈1.3 x 103 min -1. Under comparable conditions haemin is 20 times inferior to Fe3+ ion as a catalyst for the decomposition of H2O 2. The effect has been attributed to the lower value of KA for haemin than for Fe3+ ion.

AB - The dependence of the rate of the haemin-catalyzed decomposition of H 2O2 on pH was investigated. The mechanism which accounted for the results was (Equation Presented) Individual rate constants have been calculated: k1 = 3.85 x 102 M-1 min -1; k3 = 2.9min-1. KA was estimated to be ≈10-4 M and k2≈1.3 x 103 min -1. Under comparable conditions haemin is 20 times inferior to Fe3+ ion as a catalyst for the decomposition of H2O 2. The effect has been attributed to the lower value of KA for haemin than for Fe3+ ion.

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AN - SCOPUS:0344437659

SN - 0014-7672

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SP - 1453

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JO - Transactions of the Faraday Society

JF - Transactions of the Faraday Society

ER -

Decomposition of hydrogen peroxide by haemin: Dependence of the reaction velocity on pH

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