Choudhary, Vasant R. ; Dumbre, Deepa K. (2010) Solvent-free selective oxidation of benzyl alcohol to benzaldehyde by tert-butyl hydroperoxide over U3O8-supported nano-gold catalysts Applied Catalysis A: General, 375 (2). pp. 252-257. ISSN 0926-860X
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.apcata.2010.01.007
Abstract
Liquid-phase oxidation of benzyl alcohol to benzaldehyde by tertiary butyl hydroperoxide over different uranium oxide supported nano-gold catalysts in the absence of a solvent has been thoroughly investigated. The influences of catalyst parameters [viz. method of gold deposition (impregnation, co-precipitation, deposition-precipitation and homogeneous deposition-precipitation), gold loading (0-8 wt%) and catalyst calcination temperature (100-900 ° C)] on the catalyst performance have been investigated. The influence of reaction conditions [viz. reaction time (0-2 h) and temperature (25-94 ° C)] on the process performance has also been studied. The Au/U3O8 catalyst prepared by the homogeneous deposition-precipitation and calcined at 400 ° C showed very high activity (100% benzyl alcohol conversion with >85% selectivity for benzaldehyde) in the process for a short reaction period (0.5 h) at 94 ° C. The catalyst also showed excellent reusability in the process.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Benzyl Alcohol; Benzaldehyde; Partial Oxidation; Au/U3O8 Catalyst; Tert-butyl Hydroperoxide; Nano-gold |
| ID Code: | 88562 |
| Deposited On: | 29 Mar 2012 04:42 |
| Last Modified: | 29 Mar 2012 04:42 |
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