Combustion synthesis of nanometal particles supported on alpha-Al2O3: CO oxidation and NO reduction catalysts

Authors
Bera, P Patil, KC Jayaram, V Hegde, MS Subbanna, GN
Citation
P. Bera et al., Combustion synthesis of nanometal particles supported on alpha-Al2O3: CO oxidation and NO reduction catalysts, J MAT CHEM, 9(8), 1999, pp. 1801-1805
Citations number
35
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
JOURNAL OF MATERIALS CHEMISTRY
ISSN journal
09599428 → ACNP
Volume
9
Issue
8
Year of publication
1999
Pages
1801 - 1805
Database
ISI
SICI code
0959-9428(1999)9:8<1801:CSONPS>2.0.ZU;2-D
Abstract
Nanoparticles of Pt, Pd, Ag and Au supported on alpha-Al2O3 have been synth esized by the combustion method for the first time and characterized by X-r ay diffraction, transmission electron microscopy and X-ray photoelectron sp ectroscopy. Catalytic activities of these nanosized materials have been inv estigated. For the CO+O-2 reaction, 100% CO conversion occurs below 300 deg rees C over supported Pt, Pd and Ag metals whereas 90% conversion is observ ed over Au at 450 degrees C. Similarly 100% NO conversion is seen over 1% P d/Al2O3 and 1% Pt/Al2O3 below 400 degrees C for the NO+CO reaction whereas approximate to 90% NO is converted into N-2 above 650 degrees C on 1% Ag/Al 2O3 and 1% Au/Al2O3.