Organically modified silica gels doped with perruthenate anion are effective catalysts for the oxidation of alcohols by a variety of terminal oxidants including dioxygen. However, especially with the latter, the observed catalyst turnover numbers are still far from those requested for profitable industrial applications. A combination of more stable counter-cation (tetraphenylphosphonium in place of tetrapropylammonium), of local basic microenvironment and of a non-solubiliziting reaction medium respect with the catalyst (supercritical CO2) allow a significant improvement in the life-cycle and reusability of the catalyst.

Stabilization of Catalytic Sol-Gel Entrapped Perruthenate

CAMPESTRINI, SANDRO;FRANCO, LORENZO;
2008

Abstract

Organically modified silica gels doped with perruthenate anion are effective catalysts for the oxidation of alcohols by a variety of terminal oxidants including dioxygen. However, especially with the latter, the observed catalyst turnover numbers are still far from those requested for profitable industrial applications. A combination of more stable counter-cation (tetraphenylphosphonium in place of tetrapropylammonium), of local basic microenvironment and of a non-solubiliziting reaction medium respect with the catalyst (supercritical CO2) allow a significant improvement in the life-cycle and reusability of the catalyst.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/2447097
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