Process for making amino alcohols by electrochemical reduction o

Details Process for making amino alcohols by electrochemical reduction o Process for making amino alcohols by electrochemical reduction o

1986-02-10

1987-07-07

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

2041824, 2041826, C25B 304, B01D 1302

Patent

active

046785493

ABSTRACT:
A process for producing amino alcohols by electrosynthesis of nitro alcohols.
Reduction of the nitro group is performed in three stages on a cathode made of a material having a strong hydrogen overpotential. During the second stage of reduction, the electronegative potential is higher, and in the last stage the sulfuric solution of amino alcohol obtained is subjected to a purification operation by electro-electrodialysis (EED), followed by an elimination of water.
The process is particularly useful for the production of 2-nitro-2-methyl-1-propanol, 2-nitro-2-methyl-1, 3-propanediol, 2-nitro-2-ethyl-1, 3-propanediol, 2-nitro-1-butanol, tris(hydroxymethyl) nitromethane.

REFERENCES:
patent: 2485982 (1949-10-01), McMillan
patent: 2589635 (1952-03-01), Smith
patent: 3338806 (1967-08-01), Harwood
patent: 3645864 (1972-02-01), Lawson et al.
patent: 4396474 (1983-08-01), Astruc et al.
patent: 4584069 (1986-04-01), Lessard et al.
patent: 4584070 (1986-04-01), DeLue et al.

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