Abstract
Our group recently developed a series of Au/M x O y /TiO2 catalysts for CO oxidation, and demonstrated that some of these catalysts are still active after high-temperature treatment whereas Au/TiO 2 deactivates significantly due to the sintering of gold nanoparticles at elevated temperatures (Ma Z, Overbury SH, Dai S (2007) J Mol Catal A 273:97). In the current work, the performance of Au/M x O y /TiO2 (M = Al, Ca, Fe, Zn, Ga, Y, Zr, La, Ce, Pr, Nd, Sm, Eu, Gd, Dy, Ho, Er, Yb) catalysts in water-gas shift (WGS) reaction was evaluated. The influences of different metal oxide (M x O y ) additives and pretreatment temperatures were investigated, and the catalyst stability as a function of reaction time on stream was tested. Some of these novel gold catalysts, with high activity and stability in water-gas shift, furnish new possibilities for further fundamental research and industrial development.
| Original language | English |
|---|---|
| Pages (from-to) | 83-91 |
| Number of pages | 9 |
| Journal | Catalysis Letters |
| Volume | 136 |
| Issue number | 1-2 |
| DOIs | |
| State | Published - May 2010 |
Funding
Acknowledgments Research sponsored by the Division of Chemical Sciences, Office of Basic Energy Sciences, US Department of Energy under contract DE-AC05-00OR22725 with Oak Ridge National Laboratory, managed and operated by UT-Battelle, LLC. This research was also supported by the appointment for Z. Ma and H.F. Yin to the ORNL Research Associates Program, administered by Oak Ridge Associated Universities.
Keywords
- Gold catalysis
- Metal oxide
- Nanoparticles
- Promotion
- Titania
- Water-gas shift