Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/74714
Title: Photoassisted alkane activation under CO atmosphere: Observation of aldehyde, alkene, and activated alkane
Authors: Krummel, K.I.
Ke, C.P.
Kee, L.W.
Garland, M. 
Keywords: Alkane activation
Carbonylation
Chemometrics
In situ FTIR
Iridium half-sandwich complexes
Issue Date: 2004
Source: Krummel, K.I.,Ke, C.P.,Kee, L.W.,Garland, M. (2004). Photoassisted alkane activation under CO atmosphere: Observation of aldehyde, alkene, and activated alkane. AIChE Annual Meeting, Conference Proceedings : 10515-10521. ScholarBank@NUS Repository.
Abstract: Direct observation of carbonylated and dehydrogenated products from cyclohexane was made via in situ FTIR monitored reaction of half-sandwich iridium dicarbonyl metal centers under carbon monoxide atmosphere. Variation of pressure in semibatch experiments allows for the detection of aldehydes as well as alkene. Changing atmosphere from carbon monoxide to compressed air resulted in ketone formation. Initial product detection was made via GC-MS and pure component IR spectra of the individual products was made possible through recently developed chemometrics- Band Target Entropy Minimization (BTEM). This also allowed for detection degradation products and previously unobserved metal carbonyl species were observed. BTEM also allowed for previously unobserved unseen details in the pure component spectra of the common activated alkane intermediate. Further confirmation of product identity was provided through spectroscopic comparison (IR and NMR) and gas Chromatographic (GC-FID) comparison of samples obtained through experiment and those commercially available. It can be concluded that iridium half-sandwich complexes can be used to promote carbonylation of saturated alkanes under photoirradiation.
Source Title: AIChE Annual Meeting, Conference Proceedings
URI: http://scholarbank.nus.edu.sg/handle/10635/74714
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

18
checked on Dec 9, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.