Sun, Yushan published the artcileChemistry of ocean resources. IX. A new type of organic enrichment agent for extraction of potassium from seawater, Synthetic Route of 5411-14-3, the publication is Haiyang Xuebao (Zhongwenban) (1987), 9(3), 330-4, database is CAplus.
The enrichment of K+ ion from seawater and low-concentration solutions was studied by using O,O‘-catecholdiacetic acid (CDAH2) as complex donor. The K+ ion enrichment efficiency was ¡Ý90%. Solid CDAHK.CDAH2 was formed in the precipitation conversion.
Haiyang Xuebao (Zhongwenban) published new progress about 5411-14-3. 5411-14-3 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Ether, name is 2,2-(1,2-Phenylenebis(oxy))diacetic acid, and the molecular formula is C22H32O2, Synthetic Route of 5411-14-3.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia