Single step catalytic preparation of para-aminophenol
US8604246B2 · kind B2 · utility
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Key dates
| Filing date | Nov 7, 2008 |
| Grant date | Dec 10, 2013 |
| Priority date | — |
| Expiry date | Jan 5, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C213/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The method of using a bi-functional catalyst for the one-step preparation of para-aminophenol. The catalyst includes a mixture of a hydrogenation noble metal and a zirconium sulfate. Also, an improved single-step process for the preparation of para-aminophenol from nitrobenzene, in an aqueous medium, using the bi-functional catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.