Presentation
A novel design of heterogeneous catalyst for liquid-gas reaction system with Mars-van Krevelen type mechanism
Proceeding of Annual Fundamental Science Seminar 2003 (AFSS 2003)
(2003)
Abstract
The oxidation of cyclohexene with molecular oxygen, in the presence of hydrophobic niobium oxide/silica as catalysts, has been investigated. The catalysts have been prepared by impregnation of niobium penta-ethoxide on the silica surface followed by attachment of alkylsilyl groups from octadecyltrichlorosilane (ODS) on the surface with partial coverage. Cyclohexene was oxidized to 2- cyclohexen-1-ol, 2-cyclohexen-1-one and 7-oxabicyclo[4.1.0]hexane by molecular oxygen at atmospheric pressure in the presence modified Nb2O5/silica particles without any solvent at 70°C. These catalysts are efficient for the oxidation of cyclohexene with molecular oxygen which probably occurs with Mars-van Krevelen type mechanism. Based on these results, a catalyst design for liquidgas reaction system is proposed.
Keywords
- oxidation,
- cycclohexene,
- molecular oxygen,
- hydrophobic niobium oxide/silica,
- catalyst
Disciplines
Publication Date
May 20, 2003
Location
Puteri Pan Pacific Hotel, Johor Bahru, Malaysia.
Citation Information
Hadi Nur. "A novel design of heterogeneous catalyst for liquid-gas reaction system with Mars-van Krevelen type mechanism" Proceeding of Annual Fundamental Science Seminar 2003 (AFSS 2003) (2003) Available at: http://works.bepress.com/hadi_nur/200/