Catalysts
US4162235A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1977 |
| Grant date | Jul 24, 1979 |
| Priority date | — |
| Expiry date | Mar 14, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S502/525
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention relates to catalysts, especially for the catalytic oxidation of hydrocarbons and carbon monoxide and for the catalytic reduction of oxides of nitrogen in the presence, respectively, of suitable oxidizing and reducing means. In more detail, the catalyst of the invention is capable of removing oxygen from a gas containing an excess of oxygen and restoring such removed oxygen to a gas having an oxygen deficiency, and the catalyst comprises at least one of the platinum group metals platinum, rhodium, ruthenium, palladium, indium and osmium and one or more base metals at least one of which has two or more oxidation states.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.