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US 2022/0081306 A1Published application
Methods for Extracting Boron From an Organic Solution
AssigneeAlbemarle Corporation
InventorChi Hung Cheng
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Abstract
One or more methods are described for extracting boron. The one or more methods include combining a combination comprising an alcohol, an organic solvent and boron, with an aqueous solution comprising an alkali hydroxide so as to form an organic layer and an aqueous layer. The aqueous layer may be separated from the organic layer.
Claims15
A method comprising:
- (A) combining in a container:
- (i) a combination comprising an alcohol, an organic solvent, and boron;
- and
- (ii) an aqueous solution comprising about 3 wt. % to about 25 wt. % of an alkali hydroxide based on total weight of the aqueous solution;
- (iii) wherein the molar ratio of the alkali hydroxide to the boron is about 0.5 to 2.0;
- (iv) wherein the volume ratio of the combination to the aqueous solution is in the range of from about 10:1 to about 25:1;
- and
- (B) heating content of the container to a temperature in the range of from about 20° C. to about 100° C. until the content comprises an organic layer and an aqueous layer, and the aqueous layer comprises greater than about 95% of the boron from the combination;
- and
- (C) separating the aqueous layer from the content of the container.
7 more elements
A method comprising:
- (A) contacting a combination comprising an alcohol, an organic solvent, and boron with an aqueous solution comprising an alkali hydroxide at conditions sufficient so as to form an organic layer and an aqueous layer, wherein:
- (i) the alkali hydroxide is present in an amount in the range of from about 3 wt. % to about 25 wt. %, based on the total weight of the aqueous solution;
- (ii) the molar ratio of the alkali hydroxide to the boron is in the range of about 0.5 to 2.0;
- (iii) the aqueous layer comprises greater than about 95% of the boron from the combination;
- (iv) wherein the volume ratio of the combination to the aqueous solution is in the range of from about 10:1 to about 25:1;
- and
- (B) separating the aqueous layer from the organic layer.
4 more elements
Dependencies are inferred from the claim text.