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http://nopr.niscpr.res.in/handle/123456789/18324| Title: | Oxidation and decomposition of NH3 over combustion synthesized Al2O3 and CeO2 supported Pt, Pd and Ag catalysts |
| Authors: | Bera, Parthasarathi Hegde, M S |
| Issue Date: | Aug-2002 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The catalytic oxidation and decomposition of NH3 have been carried out over combustion synthesized Al2O3 and CeO2 supported Pt, Pd and Ag catalysts using temperature programmed reaction (TPR) technique in a packed bed tubular reactor. Metals are ionically dispersed over CeO2 and fine metal particles are found on Al2O3. NH3 oxidation occurs over 1% Pt/ Al2O3, 1% Pd/ Al2O3 and 1% Ag/Al2O3 at 175, 270 and 350 °C respectively producing N2, NO, N2O and H2O, whereas 1% Pt/ CeO2, 1% Pd/ CeO2 and 1% Ag/ CeO2 give N2 along with NO, N2O and H2O at 200, 225 and 250 °C respectively. N2 predominates over other nitrogen-containing products during the reaction on all catalysts. At less O2 concentration, N2 and H2O are the only products obtained during NH3 oxidation. NH3 decomposition over all the catalysts occurs above 450 °C. |
| Page(s): | 1554-1561 |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Appears in Collections: | IJC-A Vol.41A(08) [August 2002] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJCA 41A(8) 1554-1561.pdf | 1.86 MB | Adobe PDF | View/Open |
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