Abstract
Two model catalysts, Au/TiO2/C (S) (sonochemically derived) and Au/TiO2/C (M) (microwave derived), were produced by employing ultrasound irradiation and microwave irradiation, respectively. The deposition of gold colloids onto the support powders, TiO2/C, was accomplished by using a solvated metal atom impregnation (SMAI) method. The SMAI technique provides highly-dispersed gold particles on the TiO2/C support. The catalytic performance of Au based catalysts 1 wt% Au-TiO2/C (S) and 1 wt%Au-TiO2(M)/C (M) have been tested for the oxidation of CO in the temperature range of 0-300 °C and compared to that of 1 wt% Au-TiO2 (Degussa-P25). A boost in the conversion of CO was observed for the sonochemically-derived catalyst, Au/TiO2/C (S), at low temperature. Hence, the reactivity order found for CO oxidation is (Au/TiO2/C (S) > Au/TiO2 (P25) > Au/TiO2/C (M)).
| Original language | English |
|---|---|
| Pages (from-to) | 539-547 |
| Number of pages | 9 |
| Journal | Ultrasonics Sonochemistry |
| Volume | 15 |
| Issue number | 4 |
| DOIs | |
| State | Published - Apr 2008 |
Bibliographical note
Funding Information:The work in this paper was conducted within the framework of the Integrated Project NAPOLYDE, funded by the EUROPEAN Commission, Contract no.: NMP2-CT-2005-515846. We are thankful to Dr. Tova Tamari, Dr. Judith Grinblat, and Dr. Yuri Koltypin for their help with TEM, HRTEM measurements and technical support, respectively.
Funding
The work in this paper was conducted within the framework of the Integrated Project NAPOLYDE, funded by the EUROPEAN Commission, Contract no.: NMP2-CT-2005-515846. We are thankful to Dr. Tova Tamari, Dr. Judith Grinblat, and Dr. Yuri Koltypin for their help with TEM, HRTEM measurements and technical support, respectively.
| Funders | Funder number |
|---|---|
| European Commission | NMP2-CT-2005-515846 |
Keywords
- CO oxidation
- Gold catalysis
- Microwave
- Model catalyst
- Sonochemistry