尾-pinene oxidation by hydrogen peroxide catalyzed by modified niobium-MCM

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• 作者：Jakelyne V. Coelho^a ; Luiz C.A. Oliveira^a ; ^{luizoliveira@qui.ufmg.br} ; Flavia C.C. Moura^a ; Patterson P. de Souza^b ; Cesar Augusto Silva^c ; Kenia Barros Batista^c ; Má ; rcio José ; da Silva^c
• 关键词：Niobium ; MCM ; 尾-pinene ; Hydrogen peroxide
• 刊名：Applied Catalysis A ; General
• 出版年：2012
• 期刊代码：4_0926860x
• 类别：ch
• 出版时间：29 March, 2012
• 卷：419-420
• 期：Complete
• 页码：215-220
• 文件大小：673 K

摘要

Although solid niobium has a high surface area, its high Lewis and Br酶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 尾-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.