Method of making alkali metal alcoholates
US5425856A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1994 |
| Grant date | Jun 20, 1995 |
| Priority date | — |
| Expiry date | Apr 26, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D61/44
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed is a method of making an alkali metal alcoholate by performing the reaction ##STR1## where M is sodium or potassium, ROH is methanol, ethanol, propanol, or butanol, and D.C. is direct current. The process can be used to make sodium methylate in a modified Hybinette cell having a separator in between a cathode compartment and an anode compartment. The cell is filled with methanol and a solution of sodium chloride in methanol is added to the cathode compartment. When direct current is passed between the cathode and the anode, a solution of sodium methylate in methanol collects in the anode compartment. The solution of sodium methylate can be continuously removed and cooled to separate any sodium chloride in it which can be recycled back to the cathode compartment. Alternatively, the sodium chloride can be added to the anode compartment while an inert salt is added to the cathode compartment. The process can also be performed in a three-compartment cell.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.