2007
DOI: 10.1016/j.molcata.2006.08.051
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Sandwich-type tungstophosphates in the catalytic oxidation of cycloalkanes with hydrogen peroxide

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Cited by 36 publications
(4 citation statements)
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“…and 5 h of reaction does not change significantly. This behaviour is different from other previous studies [13][14][15] what may be related to the copper center as the active center (Figure 1). The copper substituted POMs showed lower conversion data the cyclooctene oxidation.…”
Section: Resultscontrasting
confidence: 99%
“…and 5 h of reaction does not change significantly. This behaviour is different from other previous studies [13][14][15] what may be related to the copper center as the active center (Figure 1). The copper substituted POMs showed lower conversion data the cyclooctene oxidation.…”
Section: Resultscontrasting
confidence: 99%
“…Most of the homogeneous oxidation of cyclohexane catalyzed by polyoxometalates (POMs) was performed in acetonitrile solvent with H 2 O 2 , e.g. tetrabutylammonium salts of [XW 11 O 39 ] nand [XW 11 MO 39 ] (n-m)-(X = P, Si, B and M III = Fe, Mn), [5], [M 4 (H 2 O) 2 (PW 9 O 34 ) 2 ] 10-, M II = Co, Mn and M III = Fe where [Fe 4 (H 2 O) 2 (PW 9 O 34 ) 2 ] 6showed higher conversion of cyclohexane but the main product was cyclohexyl hydroperoxide [6]. Heteropolytungstic acid or HPW supported on MCM-41 [7][8][9][10] finds its place in catalysis over many organic reactions owing to the typical characteristics of the mesoporous materials of the MCM-41 type with highly ordered mesoporosity (pore size 2-10 nm) [11], large surface area, and high hydrothermal stability and acidity, making these materials as efficient catalysts in the synthesis and conversion of organic molecules.…”
Section: Introductionmentioning
confidence: 99%
“…Santos et al 166 synthesized sandwich type tungstophosphates with different transition metals as an active material. Among them [Fe 4 (H 2 O) 2 (PW 9 O 34 ) 2 ] n − catalyst was found to be the most active and selective for cyclohexane oxidation reaction.…”
Section: Applications Of the Selective Oxidationsmentioning
confidence: 99%