NDLI: Towards the Development of Fiber-Based Oxidovanadium(IV) Catalysts for the Oxidation of Thioanisole

Content Provider	Springer Nature Link
Author	Walmsley, Ryan S. Chigome, Samuel Torto, Nelson Tshentu, Zenixole R.
Copyright Year	2011
Abstract	The catalytic activity of a series of bis-coordinated oxidovanadium(IV) complexes with 2-(4,5-diphenyl-1H-imidazol-2-yl)-4R-phenol ligands (R = NO2, Br, H, MeO) was investigated for the oxidation of thioanisole by hydrogen peroxide in acetonitrile at 25°C. The substituent groups had a significant effect on the catalytic activity and followed the order NO2 > Br > H > MeO, with the nitro (NO2) derivative achieving >99% conversion after 10 min while the methoxy (MeO) derivative yielded the same result in 60 min. The nitro- and methoxy-substituted homogeneous catalysts were incorporated into polystyrene and electrospun to form nonwoven mats with fiber diameters in the range 0.33–1.98 μm. These vanadium incorporated fibers were subjected to a continuous flow system at a flow rate of 1 mL/h for the oxidation of thioanisole and the nitro-substituted catalyst showed excellent catalytic activity with conversions dropping from 99 to 93% in the 10th fraction while the drop was down to 88% for the methoxy-substituted catalyst.
Starting Page	243
Ending Page	250
Page Count	8
File Format	PDF
ISSN	1011372X
Journal	Catalysis Letters
Volume Number	142
Issue Number	2
e-ISSN	1572879X
Language	English
Publisher	Springer US
Publisher Date	2011-12-06
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Oxidovanadium Oxidation Sulfides Electrospun nanofibers Continuous flow Physical Chemistry Organometallic Chemistry Catalysis Industrial Chemistry/Chemical Engineering
Content Type	Text
Resource Type	Article
Subject	Chemistry Catalysis

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