Silica gels organically modified and doped with the ruthenium species tetra-n-propylammonium perruthenate (TPAP) are leach-proof, selective catalysts for the aerobic oxidation of alcohols to carbonyls with O2 at low pressure in compressed CO2. The catalytic sol-gels are recyclable and the correlation between the materials reactivity and their surface polarity and textural properties suggests valuable information on the chemical behaviour of sol-gel entrapped silica catalysts in oxidation catalysis which is of relevant interest considering the importance of heterogeneous alcohols oxidative dehydrogenation in fine chemistry. An explanation of the structure-activity relationship is proposed to provide guidelines for the further development of efficient solid oxidation catalytst for conversions in supercritical carbon dioxide.
The effects of material properties on the activity of sol-gel entrapped perruthanate under supercritical conditions
Rosaria Ciriminna;Mario Pagliaro
2003
Abstract
Silica gels organically modified and doped with the ruthenium species tetra-n-propylammonium perruthenate (TPAP) are leach-proof, selective catalysts for the aerobic oxidation of alcohols to carbonyls with O2 at low pressure in compressed CO2. The catalytic sol-gels are recyclable and the correlation between the materials reactivity and their surface polarity and textural properties suggests valuable information on the chemical behaviour of sol-gel entrapped silica catalysts in oxidation catalysis which is of relevant interest considering the importance of heterogeneous alcohols oxidative dehydrogenation in fine chemistry. An explanation of the structure-activity relationship is proposed to provide guidelines for the further development of efficient solid oxidation catalytst for conversions in supercritical carbon dioxide.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
