Process for preparing oxalic acid and esters of same
US4118589A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 1976 |
| Grant date | Oct 3, 1978 |
| Priority date | — |
| Expiry date | Jan 15, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C51/145
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a process for preparing oxalic acid and esters of oxalic acid. More particularly, this invention relates to a catalytic process for preparing oxalic acid and esters of same by the oxidative reaction, in a liquid phase, of carbon monoxide and water or alcohols with oxygen in the presence of redox systems. The catalyst systems used in accordance with this invention comprises a redox catalyst consisting essentially of a salt of Pd (II) and salts of a metal more electropositive than Pd having at least two oxidation states and, optionally, salts of alkaline metals, and co-catalytic amounts of at least one base having the formula R.sub.3 N in which the groups R which may be like or unlike and are selected from the group consisting of hydrogen and alkyl radicals having from 1 to 10 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.