Microwave assisted desulfurization of nitrogen oxide storage reduction catalysts
US7829492B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Jan 30, 2006 |
| Grant date | Nov 9, 2010 |
| Priority date | — |
| Expiry date | Nov 1, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for removing sulfur and sulfur compounds from a catalyst includes the following steps: exposing the catalyst to a reducing atmosphere and exposing the catalyst to microwave energy. Desorption of the sulfur and sulfur compounds from the catalyst occurs at a temperature less than 600 degrees centigrade.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.