Silica supported transition metal substituted polyoxotungstates: Novel heterogeneous catalysts in oxidative transformations with hydrogen peroxide
authors Estrada, AC; Santos, ICMS; Simoes, MMQ; Neves, MGPMS; Cavaleiro, JAS; Cavaleiro, AMV
nationality International
journal APPLIED CATALYSIS A-GENERAL
author keywords Oxidation; Hydrogen peroxide; Fe; Mn; Supported metal-substituted; polyoxometalates
keywords KEGGIN-TYPE POLYOXOTUNGSTATES; AEROBIC OXIDATION; AMORPHOUS SILICA; SURFACE; TUNGSTOPHOSPHATES; CYCLOALKANES; CYCLOHEXANE; COMPLEXES; CHEMISTRY; ALDEHYDES
abstract The preparation and characterization (FT-IR, FT-Raman, diffuse reflectance, elemental analysis) of novel catalysts with iron or manganese substituted polyoxotungstates [XM(III)(H(2)O)W(11)O(39)](n-) (X = P, M = Fe or Mn; X = Si or B, M = Fe) immobilized on a functionalized silica matrix are reported. The new materials were tested as heterogeneous catalysts in the oxidation of cis-cyclooctene and cyclooctane at 80 degrees C, using environmentally safe hydrogen peroxide as oxidant and acetonitrile as solvent. Some of these novel heterogeneous catalysts could be reused several times without appreciable loss of catalytic activity. (C) 2010 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 0926-860X
year published 2011
volume 392
issue 1-2
beginning page 28
ending page 35
digital object identifier (doi) 10.1016/j.apcata.2010.10.026
web of science category Chemistry, Physical; Environmental Sciences
subject category Chemistry; Environmental Sciences & Ecology
unique article identifier WOS:000287265500004
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