Process for the purification of alkaline solution of lower alkyl

Details Process for the purification of alkaline solution of lower alkyl Process for the purification of alkaline solution of lower alkyl

1980-08-04

1981-10-06

Evans, Joseph E.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568913, C07C 2976, C07C 2988

Patent

active

042937213

ABSTRACT:
A novel process for purifying an alkaline solution of a lower alkyl alcohol containing as an impurity an alkali metal alkoxide, an alkali metal hydroxide, and water is disclosed. The process comprises treating the alkaline solution of a lower alkyl alcohol with an anhydrous hydrogen halide to react with the alkali metal alkoxide and the alkali metal hydroxide to provide a neutral solution comprised of the lower alkyl alcohol, an alkali metal halide and water. The alkali metal halide is removed from the neutral solution to obtain a substantially salt-free solution comprised of the lower alkyl alcohol and water. A zeolite molecular sieve is contacted with the solution to remove the water and to recover a substantially anhydrous solution of a lower alkyl alcohol. The process produces purified substantially anhydrous alcohol solutions suitable for the use in the production of alkali metal alkoxides such as sodium methoxide without introducing undesired amounts of alkaline impurities into the product.

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