Title:
METHOD AND APPARATUS FOR DECOMPOSING FLUORINE ATOM-CONTAINING POLYMER
Document Type and Number:
WIPO Patent Application WO/2023/074550
Kind Code:
A1
Abstract:
[Problem] To provide a method for decomposing a fluorine atom-containing polymer, with which the amount of solid residue that is required to be separated following a treatment can be reduced and fluoride ions can be recovered at a high yield even at a lower temperature. [Solution] In order to solve this problem, this method for decomposing a fluorine atom-containing polymer should be used, the method being characterized by: including a step for bringing a treatment object that is a fluorine atom-containing polymer into contact with subcritical water at a temperature of 200°C or higher in the presence of at least one type of basic compound selected from the group consisting of alkali metal hydroxides and alkaline earth metal hydroxides; and in that this step is carried out in an oxygen-containing atmosphere. According to this method, a fluorine atom-containing polymer can be easily mineralized by being decomposed into fluoride ions and carbon dioxide.
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Inventors:
HORI HISAO (JP)
Application Number:
PCT/JP2022/039253
Publication Date:
May 04, 2023
Filing Date:
October 21, 2022
Export Citation:
Assignee:
UNIV KANAGAWA (JP)
International Classes:
C08J11/14; B09B3/45; C08J11/16
Foreign References:
| JP2014210826A | 2014-11-13 | |||
| JP2021155478A | 2021-10-07 | |||
| JP2001288480A | 2001-10-16 |
Attorney, Agent or Firm:
MAEDA Shinya (JP)
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