Gawthrope, D.E., Lee, A.F. and Wilson, K. (2004) Physicochemical properties of Pt-SO4/Al2O3 alkane oxidation catalysts. Physical Chemistry Chemical Physics, 6 (14). pp. 3907-3914. ISSN 1463-9076
Full text not available from this repository.Abstract
A series of sulfated alumina catalysts were synthesised by wet impregnation with sulfate-containing solutions. The degree of surface sulfation and corresponding surface acidity could be readily tuned by varying the molarity of impregnating solution. Strong acid treatments (>0.1 M) induced aluminium-sulfate crystallisation with a concomitant decrease in porosity and surface acidity. Platinum-doped sulfated aluminas showed enhanced activity towards methane, ethane and propane combustion. Activity scaled with the degree of accessible surface sulfate and platinum loading, however C–H bond scission appeared rate-limiting over both pure and presulfated aluminas. The magnitude of sulfate-promoted propane oxidation was greatest under heavily oxidising conditions (C3H6O2 > 120) but independent of Pt loading, confirming that support-mediated alkane activation is the dominant factor in the promotional mechanism.
| Item Type: | Article |
|---|---|
| Academic Units: | The University of York > Chemistry (York) |
| Depositing User: | York RAE Import |
| Date Deposited: | 26 Feb 2009 14:26 |
| Last Modified: | 26 Feb 2009 14:26 |
| Published Version: | http://dx.doi.org/10.1039/b402623c |
| Status: | Published |
| Publisher: | Royal Society of Chemistry |
| Refereed: | Yes |
| Identification Number: | 10.1039/b402623c |
| URI: | http://eprints.whiterose.ac.uk/id/eprint/7172 |
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