Supported precious metal catalysts via hydrothermal deposition
US8450236B2 · kind B2 · utility
7Cited by
46References
21Claims
0Family size
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Key dates
| Filing date | Apr 13, 2010 |
| Grant date | May 28, 2013 |
| Priority date | — |
| Expiry date | Aug 7, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for making a catalyst having precious metal nanoparticles deposited on a support includes first providing an aqueous dispersion of support particles. A pre-treatment slurry is prepared by mixing the aqueous dispersion of support particles with a water-soluble precious metal precursor and a reducing agent. The pre-treatment slurry is hydrothermally treated at a temperature in the range of from about 40° C. to about 220° C. for a time sufficient to deposit precious metal nanoparticles on the surface of the support particles, the precious metal nanoparticles having an average particle size less about 50 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.