Abstract
The impact of the preparation method on the activity and stability of gold supported on ceria-zirconia low temperature water-gas shift (WGS) catalysts have been investigated. The influence of the gold deposition method, nature of the gold precursor, nature of the washing solution, drying method, Ce: Zr ratio of the support and sulfation of the support have been evaluated. The highest activity catalysts were obtained using a support with a Ce: Zr mole ratio 1: 1, HAuCl4 as the gold precursor deposited via deposition precipitation using sodium carbonate as the precipitation agent and the catalyst washed with water or 0.1 M NH4OH solution. In addition, the drying used was found to be critical with drying under vacuum at room temperature found to be most effective.
Original language | English |
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Pages (from-to) | 131-138 |
Number of pages | 8 |
Journal | Catalysis Today |
Volume | 180 |
Issue number | 1 |
DOIs | |
Publication status | Published - 17 Jan 2012 |
ASJC Scopus subject areas
- Catalysis
- General Chemistry