β-pinene oxidation by hydrogen peroxide catalyzed by modified niobium-MCM
Although solid niobium has a high surface area, its high Lewis and Br?nsted acidity is a drawback that always compromises its catalytic performance in oxidation reactions. In this work, treating the niobium catalyst with hydrogen peroxide circumvents this disadvantage and results in a significant increase in the selectivity of the oxidation of β-pinene. In addition, the efficiency of the niobium catalysts supported on MCM was investigated. Nb-MCM//H2O2 and Nb-MCM were the most active catalysts. Good selectivity of up to 85% at a 93-97% substrate conversion has been achieved. The catalyst can easily be recovered and reused several times without loss in activity.
Coelho, Jakelyne V.,Oliveira, Luiz C.A.,Moura, Flavia C.C.,De Souza, Patterson P.,Silva, Cesar Augusto,Batista, Kenia Barros,Silva, Márcio José Da
experimental part
p. 215 - 220
(2012/06/29)
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