Title:
酸の分離方法
Document Type and Number:
Japanese Patent JP4264689
Kind Code:
B2
Abstract:
The present invention provides a process for selectively separating HF and like acids present along with water-unstable organic acid fluorides. In particular, the invention provides a process for separating an acid from a system in which the acid and an organic acid fluoride are present, the organic acid fluoride being represented by formula (I): RCOF wherein R is a fluorine atom; a C1-20 linear, branched or cyclic alkyl or halogenated alkyl group that may contain a heteroatom; or a C6-20 aryl or halogenated aryl group that may contain a heteroatom; the process comprising using as a deacidifying agent an aromatic heterocyclic compound having a boiling point of at least 50 DEG C and having one or more nitrogen atoms as heteroatom.
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Inventors:
Masaki Irie
Masahiro Kondo
Masahiro Kondo
Application Number:
JP2001396680A
Publication Date:
May 20, 2009
Filing Date:
December 27, 2001
Export Citation:
Assignee:
Daikin Industries, Ltd.
International Classes:
C01B7/19; C01B7/01; C01B7/07; C01B7/09; C01B32/80; C07C51/64; C07C55/36; C07C55/40
Domestic Patent References:
| JP2002526385A | ||||
| JP8231462A | ||||
| JP5213812A | ||||
| JP57164991A | ||||
| JP11116216A | ||||
| JP59039705A | ||||
| JP49096996A |
Foreign References:
| US2645649 |
Other References:
George A. Olah et al.,Poly-4-vinylpyridinium Poly(Hydrogen Fluoride): A Solid Hydrogen Fluoride Equivalent Reagent,Synthesis,1993年 7月,No. 7,pp. 693-699
Attorney, Agent or Firm:
Eiji Saegusa
Kakehi Yuro
Takeshi Ohara
Kenji Saito
Jun Fujii
Hitoshi Seki
Mutsuko Nakano
Kakehi Yuro
Takeshi Ohara
Kenji Saito
Jun Fujii
Hitoshi Seki
Mutsuko Nakano