Nitric Acid-treated Bentonite Clay: A Novel Oxidation Supported Reagent

Bentonite clay washed with 6 M nitric acid is active in the oxidation of benzaldehyde to benzoic acid. There is only one product, in addition to small amounts of carbonaceous material. The reactive species is believed to be nitrate ions present in the interlamellar species, together with an interlam...

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Main Authors: Charis R. Theocharis, John B. Tomlinson, Adam O. Whelan, George C.P. Zychowicz
Format: Article
Language:English
Published: SAGE Publishing 1990-09-01
Series:Adsorption Science & Technology
Online Access:https://doi.org/10.1177/026361749000700307
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author Charis R. Theocharis
John B. Tomlinson
Adam O. Whelan
George C.P. Zychowicz
author_facet Charis R. Theocharis
John B. Tomlinson
Adam O. Whelan
George C.P. Zychowicz
author_sort Charis R. Theocharis
collection DOAJ
description Bentonite clay washed with 6 M nitric acid is active in the oxidation of benzaldehyde to benzoic acid. There is only one product, in addition to small amounts of carbonaceous material. The reactive species is believed to be nitrate ions present in the interlamellar species, together with an interlamellar acidic aluminium species which is useful in maintaining the crystallinity of the acid-washed clay. The reaction is possible when free 6 M acid is introduced into the reaction mixture together with untreated clay, but in that case more carbonaceous material is formed. There is evidence that acid treatment leads to the introduction of acidic aluminium species in the interlamellar region which may act as pillars; these are removed on washing.
format Article
id doaj-art-84876492e1d74006991f0c5f8fa604e2
institution Kabale University
issn 0263-6174
2048-4038
language English
publishDate 1990-09-01
publisher SAGE Publishing
record_format Article
series Adsorption Science & Technology
spelling doaj-art-84876492e1d74006991f0c5f8fa604e22025-02-03T10:07:59ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40381990-09-01710.1177/026361749000700307Nitric Acid-treated Bentonite Clay: A Novel Oxidation Supported ReagentCharis R. Theocharis0John B. Tomlinson1Adam O. Whelan2George C.P. Zychowicz3Porous Solids Groups, Department of Chemistry, Brunel University, Uxbridge. Middlesex, UB8 3PH, U.K.Porous Solids Groups, Department of Chemistry, Brunel University, Uxbridge. Middlesex, UB8 3PH, U.K.Porous Solids Groups, Department of Chemistry, Brunel University, Uxbridge. Middlesex, UB8 3PH, U.K.Porous Solids Groups, Department of Chemistry, Brunel University, Uxbridge. Middlesex, UB8 3PH, U.K.Bentonite clay washed with 6 M nitric acid is active in the oxidation of benzaldehyde to benzoic acid. There is only one product, in addition to small amounts of carbonaceous material. The reactive species is believed to be nitrate ions present in the interlamellar species, together with an interlamellar acidic aluminium species which is useful in maintaining the crystallinity of the acid-washed clay. The reaction is possible when free 6 M acid is introduced into the reaction mixture together with untreated clay, but in that case more carbonaceous material is formed. There is evidence that acid treatment leads to the introduction of acidic aluminium species in the interlamellar region which may act as pillars; these are removed on washing.https://doi.org/10.1177/026361749000700307
spellingShingle Charis R. Theocharis
John B. Tomlinson
Adam O. Whelan
George C.P. Zychowicz
Nitric Acid-treated Bentonite Clay: A Novel Oxidation Supported Reagent
Adsorption Science & Technology
title Nitric Acid-treated Bentonite Clay: A Novel Oxidation Supported Reagent
title_full Nitric Acid-treated Bentonite Clay: A Novel Oxidation Supported Reagent
title_fullStr Nitric Acid-treated Bentonite Clay: A Novel Oxidation Supported Reagent
title_full_unstemmed Nitric Acid-treated Bentonite Clay: A Novel Oxidation Supported Reagent
title_short Nitric Acid-treated Bentonite Clay: A Novel Oxidation Supported Reagent
title_sort nitric acid treated bentonite clay a novel oxidation supported reagent
url https://doi.org/10.1177/026361749000700307
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AT johnbtomlinson nitricacidtreatedbentoniteclayanoveloxidationsupportedreagent
AT adamowhelan nitricacidtreatedbentoniteclayanoveloxidationsupportedreagent
AT georgecpzychowicz nitricacidtreatedbentoniteclayanoveloxidationsupportedreagent