Process for producing catalyst for cyanhydrin hydration and product of the process
US7704917B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2006 |
| Grant date | Apr 27, 2010 |
| Priority date | — |
| Expiry date | Oct 14, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J35/651
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for producing a catalyst for cyanhydrin hydration, which comprises a manganese oxide as a main component and is excellent in both physical strength and reaction activity, is provided, as well as a catalyst for cyanhydrin hydration obtained by the production process. Specifically, a process for producing a catalyst which is useful for cyanhydrin hydration and contains a manganese oxide as a main component, potassium, and one or more elements selected from the group consisting of bismuth, vanadium and tin, in which the above compounds are mixed together in an aqueous system; the resulting slurry precipitate is subjected to solid-liquid separation; and the resulting hydrous cake is dried in at least two separate stages comprising a predrying and a main drying, is provided, as well as a catalyst for cyanhydrin hydration obtained by the production process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.