Method of purifying yellow phosphorus
AssigneeOci Company Ltd.
InventorsSeung-Hyun Han, Wook Chang, Yeon-Hee Lee
Life of this patent
Estimating the term…
Abstract
The present invention relates to a method of purifying yellow phosphorus, and more particularly, to a method of effectively removing impurities from yellow phosphorus used as raw materials of a phosphoric acid to increase purity of the phosphoric acid, the method including: removing impurities from the phosphoric acid by adding an oxidizing agent to the yellow phosphorus, followed by stirring; and adding a solution including an additive having a specific functional group in a chemical structure to the yellow phosphorus from which the impurities are removed, followed by stirring.
Claims17
A method of purifying yellow phosphorus comprising:
- removing impurities from the yellow phosphorus by adding an oxidizing agent to the yellow phosphorus, followed by stirring;
- and
- removing impurities by adding a solution including an additive represented by the following Chemical Formula 1 to the yellow phosphorus from which the impurities are removed, followed by stirring:
- R is C1-C5 alkyl.
A method of purifying yellow phosphorus comprising:
- removing impurities from the yellow phosphorus by adding a solution including an oxidizing agent and an additive represented by the following Chemical Formula 1 to the yellow phosphorus, followed by stirring:
- R is C1-C5 alkyl.
Dependencies are inferred from the claim text.