Process for regenerating hydrogenation catalyst activity in hydrogen peroxide synthesis
US3998936A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1975 |
| Grant date | Dec 21, 1976 |
| Priority date | — |
| Expiry date | Apr 23, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/584
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Catalytic activity of a platinum group metal catalyst used in catalyzing the hydrogenation of a working solution of an alkylanthraquinone in a water-immiscible solvent in the manufacture of hydrogen peroxide, said catalyst having become at least partially inactivated, is regenerated by a process comprising contacting the catalyst in the presence of the working solution and in the absence of hydrogen with an oxidizing agent selected from the group consisting of an oxygen-containing gas and hydrogen peroxide. When the process of the invention is made an integral part of the cyclic anthraquinone process for producing hydrogen peroxide, there results an improvement in the latter process whereby the activity of the catalyst can be maintained at a high level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.