Sulfur dioxide reduction process utilizing catalysts with spinel structure
US4147763A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1977 |
| Grant date | Apr 3, 1979 |
| Priority date | — |
| Expiry date | Dec 27, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/39
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A catalytic process for the reduction to elemental sulfur of the sulfur dioxide contained in gas streams using a reducing gas such as hydrogen, or preferably carbon monoxide, in a reactor charged with a material represented by the general formula M.sup.II M.sub.2.sup. III O.sub.4 crystallized in the spinel structure wherein M.sup.II is a divalent metal and M.sup.III is a trivalent metal from the first transition period of the Periodic Table of the Elements, or derivatives of the materials of the above formula resulting from pretreatment with hydrogen or, preferably carbon monoxide, and/or exposure to the sulfur dioxide-containing gas stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.