Study of Selectivity of Metal Phosphates and Phosphonates in Baeyer-Villiger Oxidations
authors Rocha, GMSRO; Santos, TM; Bispo, CSS
nationality International
journal CATALYSIS LETTERS
author keywords Baeyer-Villiger oxidation; Metal phosphates and phosphonates; Selectivity
keywords LAYERED ZIRCONIUM-PHOSPHATE; INSOLUBLE ACID SALTS; HYDROGEN-PEROXIDE; AROMATIC-ALDEHYDES; CRYSTAL-STRUCTURES; HETEROGENEOUS CATALYSIS; HYDROTALCITE CATALYSTS; TETRAVALENT METALS; BASE CATALYST; IONIC LIQUIDS
abstract Layered materials including metal phosphates and phosphonates have been widely investigated in several fields acting as good selective catalysts in a great number of oxidative reactions. Zirconium phosphate amorphous [Zr(HPO4)(2)center dot H2O; ZrPA], sodium exchanged zirconium phosphate amorphous [Zr(NaPO4)(2); NaZrPA], potassium exchanged zirconium phosphate amorphous [Zr(KPO4)(2); KZrPA], zirconium phenylphosphonate amorphous [Zr(O3PC6H5)(2); ZrPPA], zirconium carboxyethylphosphonate [Zr(O3PCH2CH2COOH)(2); ZrCEP] and aluminium carboxyethylphosphonate [Al-3(OH)(3)(O3PCH2CH2CO2)(2)center dot 3H(2)O; AlCEP] were prepared, characterized and evaluated as selective catalysts in the Baeyer-Villiger oxidation of cyclopentanone, p-methoxybenzaldehyde and 2,4,6-trimethylbenzaldehyde by hydrogen peroxide, in acetic acid. The selectivity of delta-valerolactone, p-methoxyphenol and 2,4,6-trimethylphenol have been found to be strongly related with the properties and structure of each catalyst.
publisher SPRINGER
issn 1011-372X
year published 2011
volume 141
issue 1
beginning page 100
ending page 110
digital object identifier (doi) 10.1007/s10562-010-0481-2
web of science category Chemistry, Physical
subject category Chemistry
unique article identifier WOS:000286380900014
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journal impact factor 2.482
5 year journal impact factor 2.555
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