Determining oxygen content of metal species in heterogeneous catalysts
US8039265B1 · kind B1 · utility
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Key dates
| Filing date | Mar 17, 2008 |
| Grant date | Oct 18, 2011 |
| Priority date | — |
| Expiry date | Mar 28, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/209163
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The oxygen content of metal species in a heterogeneous catalyst is determined using volumetric adsorption measurements. Such measurements are employed to quantify the amount of reduction gas that it takes to reduce metal species of a catalyst sample, and the oxygen content is derived from this amount and the reaction stoichiometry. This method can be applied to mono-metallic and multi-metallic heterogeneous catalysts and has been shown to provide at least 10 times better detection sensitivity than typical TCDs in TPR-TCD methods.
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