Vapour phase oxidation process
US3948997A · kind A · utility
20Cited by
3References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1974 |
| Grant date | Apr 6, 1976 |
| Priority date | — |
| Expiry date | Mar 14, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C49/17
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
In the oxidation of .alpha., .beta.-diols to .alpha., .beta.-diones with oxygen, the use of a catalyst comprising at least one metal selected from Cu, Ag and Au and at least one element selected from Ge, Sn, Pb, N, P, As, Sb, Bi. In the oxidation of ethylene glycol to glyoxal with oxygen, condensing ethylene glycol from the products from the reactor and thereafter lowering the temperature to condense the glyoxal. A purification process for glyoxal uses a weakly basic anion exchange resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.