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Reduction and dissolution of manganese(III) and manganese(IV) oxides by organics: 2. Survey of the reactivity of organics

Stone, Alan T. and Morgan, James J. (1984) Reduction and dissolution of manganese(III) and manganese(IV) oxides by organics: 2. Survey of the reactivity of organics. Environmental Science and Technology, 18 (8). pp. 617-624. ISSN 0013-936X. doi:10.1021/es00126a010. https://resolver.caltech.edu/CaltechAUTHORS:20201209-122141462

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Abstract

Reduction and dissolution of manganese(III, IV) oxide suspensions by 27 aromatic and nonaromatic compounds resembling natural organics were examined in order to understand the solubilization reaction in nature. At pH 7.2, 10⁻³ M formate, fumarate, glycerol, lactate, malonate, phthalate, propanol, propionaldehyde, propionate, and sorbitol did not dissolve appreciable amounts of oxide after 3 h of reaction. The following organics did dissolve manganese oxides under these conditions and are listed in order of decreasing reactivity: 3-methoxycatechol ~ catechol 3,4-dihydroxybenzoic acid ~ ascorbate > 4-nitrocatechol > thiosalicylate > hydroquinone > 2,5-dihydroxybenzoic acid > syringic acid > o-methoxyphenol > vanillic acid > orcinol - 3,5-dihydroxybenzoic acid > resorcinol > oxalate ~ pyruvate - salicylate. Relative reactivities of organic substrates are discussed in terms of surface complex formation prior to electron transfer. Dissolution of manganese oxides by marine fulvic acid was enhanced by illumination, verifying that the reaction is photocatalyzed.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1021/es00126a010DOIArticle
Additional Information:© 1984 American Chemical Society. Received for review September 2, 1983. Accepted March 14, 1984.
Issue or Number:8
DOI:10.1021/es00126a010
Record Number:CaltechAUTHORS:20201209-122141462
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20201209-122141462
Official Citation:Reduction and dissolution of manganese(III) and manganese(IV) oxides by organics: 2. Survey of the reactivity of organics Alan T. Stone and James J. Morgan Environmental Science & Technology 1984 18 (8), 617-624 DOI: 10.1021/es00126a010
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:106986
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:09 Dec 2020 23:13
Last Modified:16 Nov 2021 18:58

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