Partial oxidation of alkanes to oxygenates in supercritical carbon dioxide

Heterogeneously catalysed partial oxidation of cyclohexane in supercritical carbon dioxide

“…The conversion of methane and ethane in scCO 2 yields corresponding alcohols, aldehydes and acids similar to gas phase experiments [18]. In our group, we have intensively investigated the partial oxidation of propane over metal oxide catalysts in scCO 2 [19][20][21]. The product distribution was unlike the results from gas phase runs (formation of, e.g.…”

Oxyfunctionalization of n-pentane and n-hexane by oxovanadium complexes supported on carbamated modified silica gel

“…Heterogenization or immobilization of active metal complexes on silica, alumina or polymeric supports [1][2][3] constitutes a convenient approach for combining the advantages of homogeneous and heterogeneous catalyses, namely due to their easy isolation from the products by simple filtration, the possibility of recycling them and the facility to control and tune the catalyst composition [4,5]. Such a strategy has been applied [6][7][8][9][10][11][12][13][14][15][16][17][18][19] to the selective partial oxidation of alkanes by transition metal supported catalysts to form oxygencontaining compounds such as alcohols, aldehydes, ketones and carboxylic acids.…”

Oxidation of limonene catalyzed by Metal(Salen) complexes

“…Consequently, SCFs provide the opportunity to engineer the reaction environment by manipulating temperature and pressure. Specifically, the use of SCCO 2 as solvent offers the unique advantage of compatibility with green technology (Walther et al, 1999;Birbaum et al, 1999;Savage et al, 1995;Kerler and Martin, 2001;Dariva, 2000), although it cannot offer the advantage of tunable polarity that supercritical H 2 O can (Kerler and Martin, 2001). Our findings on the use of supercritical CO 2 were been recently described (Lima et al 2005).…”