摘要:
Highly purified alkali metal hydroxide and carbonate solutions are obtained by treating self-contaminated solutions thereof with composite ion exchange resin bodies having low residual amounts of quaternary ammonium cation not intimately associated with carboxylate anions to minimize inorganic chloride and chlorate anion leakage.
摘要:
Improved composite ion exchange resin bodies comprising a reaction product of an ingredient containing carboxylate anions polymerized within a strong base anion exchange resin, said resin bodies having low residual amounts of quaternary ammonium cation not intimately associated with said carboxylate anions to minimize inorganic chloride and chlorate anion leakage in ion exchange column operation.
摘要:
A method for purifying an aqueous alkaline solution, which comprises: bringing a fibrous activated carbon into contact with an aqueous alkaline solution-to remove a metal component other than alkali metals and alkaline earth metals from the aqueous alkaline solution.