Please use this identifier to cite or link to this item:
|Title:||Isomerisation of α-pinene oxide over B2O 3/SiO2 and Al-MSU catalysts||Authors:||Ravindra, D.B.
|Issue Date:||2004||Citation:||Ravindra, D.B., Nie, Y.T., Jaenicke, S., Chuah, G.K. (2004). Isomerisation of α-pinene oxide over B2O 3/SiO2 and Al-MSU catalysts. Catalysis Today 96 (3) : 147-153. ScholarBank@NUS Repository. https://doi.org/10.1016/j.cattod.2004.06.117||Abstract:||The isomerisation of α-pinene oxide to campholenic aldehyde was investigated over a number of solid acids - B2O3/SiO 2, ZnCl2/MCM-41, Al-MCM-41, HY zeolites and Al-MSU-S FAU. Irrespective of the loading, the selectivity to campholenic aldehyde over B2O3/SiO2 was ∼69% at 25°C. The initial rate for the isomerisation of α-pinene oxide was a maximum at 15wt.% B2O3 loading. Both Lewis and Brønsted acid sites were present in B2O3/SiO 2 samples although at higher loadings of B2O3, Brønsted acidity predominated. Under anhydrous conditions, no crystalline phases of boron oxide were detected up to a B2O 3 loading of 20wt.%, but upon exposure to ambient environment, boric acid was formed. The Lewis acid, ZnCl2/MCM-41, was not very active but highly selective (85%) for campholenic aldehyde. Al-MCM-41 and HY zeolites showed high conversion but the selectivity was dependent on the Al content, varying from 49 to 66%. By incorporating both microporosity and mesoporosity in mesostructured Al-MSU-SFAU (Si/Al 70), good activity and selectivity to campholenic aldehyde, 86%, was observed. © 2004 Elsevier B.V. All rights reserved.||Source Title:||Catalysis Today||URI:||http://scholarbank.nus.edu.sg/handle/10635/95477||ISSN:||09205861||DOI:||10.1016/j.cattod.2004.06.117|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Jan 19, 2022
WEB OF SCIENCETM
checked on Jan 12, 2022
checked on Jan 20, 2022
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.