보론산의 용액 화학
Aqueous Chemistry of Boric Acid
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초록
보론을 함유한 광석이나 2차자원으로부터 보론을 효과적으로 회수하기 위한 습식공정을 개발하기 위해서는 수용액에서 보론산의농도분포 자료가 필요하다. 보론산은 pH 6 이하의 용액에서 B(OH) 3 로, pH 12 이상의 용액에서는 B(OH) 4 로 존재한다. 그러나 pH 6에서 11사이의 범위에서는 B(OH) 3 와 B(OH) 4 간의 중합체 형성반응이 일어난다. B 3 O 3 (OH) 4 , B 4 O 5 (OH) 4 와 같은 중합체의 몰분율은 보론산의 농도에 비례한다.
Abstract
Distribution data of boric acid in water is necessary to develop a hydrometallurgical process for the recovery of boron from primary and secondary resources containing boron. Boric acid exists as B(OH) 3 and B(OH) 4 − when solution pH is less than 6 and higher than 12, respectively. In the solution pH range of 6-11, condensation reaction between B(OH) 3 and B(OH) 4 results in the formation of some polymers. The mole fraction of the boron polymers such as B 3 O 3 (OH) 4 − and B 4 O 5 (OH) 4 2− is proportional to the concentration of boric acid.
참고문헌 (11)
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