Title:
ANION EXCHANGER, MIXTURE OF ANION EXCHANGER AND CATION EXCHANGER, MIXED BED COMPRISING ANION EXCHANGER AND CATION EXCHANGER, PRODUCTION PROCESSES THEREFOR, AND METHOD FOR PURIFYING AQUEOUS HYDROGEN PEROXIDE SOLUTION
Document Type and Number:
WIPO Patent Application WO/2015/098348
Kind Code:
A1
Abstract:
A process for producing a mixture of an anion exchanger and a cation exchanger, characterized by including an anion-exchanger conversion step (1) in which an aqueous carbon dioxide solution obtained by dissolving carbon dioxide gas in pure water or ultrapure water is brought into contact with a mixture of an anion exchanger (B) and a cation exchanger to thereby convert the anion exchanger (B) to an anion exchanger (A) having a bicarbonate ion form or having both a bicarbonate ion form and a carbonate ion form and obtain a mixture of the anion exchanger (A) and the cation exchanger.
According to the invention, it is possible to convert the anion exchanger of a mixture of an anion exchanger and a cation exchanger to the bicarbonate ion form or to both the bicarbonate ion form and the carbonate ion form, while maintaining the mixture state.
Inventors:
TAKAHASHI KAZUSHIGE (JP)
ITO MIWA (JP)
ITO MIWA (JP)
Application Number:
PCT/JP2014/080208
Publication Date:
July 02, 2015
Filing Date:
November 14, 2014
Export Citation:
Assignee:
ORGANO CORP (JP)
International Classes:
C01B15/013; B01J41/12; B01J47/04
Foreign References:
| JPH08231207A | 1996-09-10 | |||
| JPH0920505A | 1997-01-21 | |||
| US20030018140A1 | 2003-01-23 |
Attorney, Agent or Firm:
AKATSUKA Kenji et al. (JP)
Kenji Akatsuka (JP)
Kenji Akatsuka (JP)
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