Preparation and catalytic behaviour of sub-nanometer gold deposited on TiO2 by vacuum calcination
- 1 March 1993
- journal article
- Published by Springer Science and Business Media LLC in Research on Chemical Intermediates
- Vol. 19 (1), 1-13
- https://doi.org/10.1163/156856793x00497
Abstract
Titania-supported gold catalysts calcined under vacuum have been studied using a combination of TEM and activity measurements for CO oxidation. A time dependent study by TEM suggested the presence of highly dispersed gold, a high percentage of which lies below the 1 nm resolution limit. A comparison between Au/TiO2 samples calcined in vacuum and air has shown large differences in catalytic behaviour, indicating that not only the size of gold particles but also the oxidized state of the support surface is important.Keywords
This publication has 6 references indexed in Scilit:
- Hydrogenation of CO2, acetone, and CO on a Rh foil promoted by titania overlayersCatalysis Letters, 1990
- Gold catalysts prepared by coprecipitation for low-temperature oxidation of hydrogen and of carbon monoxideJournal of Catalysis, 1989
- Strong metal-support interactionsAccounts of Chemical Research, 1987
- Influence of Noble Metal Particles on Semiconducting and Insulating Oxide MaterialsPublished by American Chemical Society (ACS) ,1986
- Strong Metal-Support InteractionsPublished by American Chemical Society (ACS) ,1986
- Gold-titania interactions: Temperature dependence of surface area and crystallinity of TiO2 and gold dispersionJournal of Catalysis, 1984