4.6 Article

Oxidation of organic substrates mediated by a heterogeneous Mn(1,4,7-trimethyl-1,4,7-triazacyclononane)-based catalyst

Journal

CATALYSIS COMMUNICATIONS
Volume 10, Issue 3, Pages 347-350

Publisher

ELSEVIER SCIENCE BV
DOI: 10.1016/j.catcom.2008.09.019

Keywords

Catalysis; Heteropolyacids; Immobilization; Oxidation; Manganese

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Tungstosilicic acid readily undergoes salt metathesis with a Mn(1,4,7-trimethyl-1,4,7-triazacyclononane) complex to form a Mn-tungstosilicic salt. This compound, being insoluble in all common solvents, was used as a heterogeneous catalyst in oxidation reactions with H(2)O(2) as an oxidising agent. Its catalytic performance was directly compared to the homogeneous Mn-catalyst Counterpart. Despite leaching of manganese into the solution, all evidences Suggest, that the reaction is taking place at the solid Surface rather that) it, solution. The catalytic selectivity of both Mn-complexes was comparable, but the activity of the Mn-tungstosilicic salt was lower than the homogeneous Counterpart. (C) 2008 Elsevier B.V. All rights reserved.

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