WO2013058069A1 - イミド塩の製造方法 - Google Patents
イミド塩の製造方法 Download PDFInfo
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- WO2013058069A1 WO2013058069A1 PCT/JP2012/074552 JP2012074552W WO2013058069A1 WO 2013058069 A1 WO2013058069 A1 WO 2013058069A1 JP 2012074552 W JP2012074552 W JP 2012074552W WO 2013058069 A1 WO2013058069 A1 WO 2013058069A1
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- intermediate product
- alkali metal
- imide salt
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/082—Compounds containing nitrogen and non-metals and optionally metals
- C01B21/086—Compounds containing nitrogen and non-metals and optionally metals containing one or more sulfur atoms
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D13/00—Compounds of sodium or potassium not provided for elsewhere
Definitions
- the present invention relates to a method for producing an imide salt.
- imide salts such as LiN (SO 2 F) 2 have attracted attention as supporting salts for electrolytes used in lithium ion secondary batteries. Further, KN (SO 2 F) 2 or NaN (SO 2 F) 2 or a mixture thereof has attracted attention as an electrolyte for molten salt batteries.
- Non-Patent Document 1 urea and fluorosulfonic acid are reacted to produce HN (SO 2 Cl) 2 , and HN (SO 2 Cl) 2 and KF are reacted in a nitromethane solvent or a dichloromethane solvent. , KN (SO 2 F) 2 .
- An object of the present invention is to provide a method for producing an imide salt, which can easily produce an imide salt.
- a method for producing an imide salt represented by MN (SO 2 F) 2 (M is an alkali metal).
- M is an alkali metal
- a mixture of sulfamic acid, halogenated sulfonic acid and thionyl chloride is heated to react to form a first intermediate product, and the unreacted thionyl chloride is converted from the first intermediate product.
- the removed product is reacted with alkali metal fluoride MF in the absence of a solvent to produce a second intermediate product, and the second intermediate product and alkali metal fluoride MF are reacted in a polar solvent.
- a third step of producing an imide salt is
- HN SO 2 X 1
- SO 2 X 2 SO 2 X 2
- X 1 and X 2 independently represent a halogen element; the same shall apply hereinafter
- alkali metal fluoride in a solvent such as dichloromethane.
- an alkali metal imide salt is obtained by reacting with the compound MF, the reaction rate of both is slow. This is because the alkali metal fluoride MF is hardly dissolved in dichloromethane, and the concentration of the alkali metal fluoride MF cannot be increased.
- the first intermediate product includes HN (SO 2 X 1 ) (SO 2 X 2 ).
- MN (SO 2 F) 2 which is the target product from the first intermediate product
- HN (SO 2 X 1 ) (SO 2 X 2 ) is isolated from the first intermediate product. It can be considered as a normal means.
- HN (SO 2 X 1 ) (SO 2 X 2 ) is not isolated and thionyl chloride remaining in the first intermediate product is removed and the following treatment is performed. The inventor has found that the yield of the target product hardly decreases even with such a method.
- the target product MN (SO 2 F) 2 is obtained by reacting the second intermediate product obtained in the second step with the alkali metal fluoride MF in a polar solvent, and this synthesis.
- the method has been found to be completed in a shorter time than the conventional synthesis method.
- the object can be generated by the following steps. That is, sulfamic acid, halogenated sulfonic acid, and thionyl chloride are reacted to produce a first intermediate product. Then, the alkali metal fluoride MF is added to the first intermediate product from which the unreacted thionyl chloride has been removed, and then a polar solvent is added to obtain MN (SO 2 F) 2 as the target product. In this way, the object can be obtained more easily and in a shorter time than conventional.
- HN (SO 2 X 1) from the first intermediate product (SO 2 X 2) Since not isolated, the industrial, HN (SO 2 X 1) (SO 2 X 2 ) Is not necessary for the isolation of the distillation equipment. For this reason, a target object can be obtained easily.
- one halogen element of HN (SO 2 X 1 ) (SO 2 X 2 ) contained in the first intermediate product is substituted with fluorine
- the other halogen element is substituted with fluorine.
- the following effects can be obtained. That is, in the second step, HN (SO 2 X 1 ) (SO 2 X 2 ) is converted into an alkali metal salt, and HN (SO 2 X 1 ) (SO 2 X 2 ) to be hydrolyzed is extinguished.
- the third step it is possible to use water that easily dissolves the alkali metal fluoride MF.
- the fluorination process of HN (SO 2 X 1 ) (SO 2 X 2 ) with alkali metal fluoride MF is performed in two stages as described above, instead of being performed in a predetermined solvent.
- the hydrolysis of SO 2 X 1 ) (SO 2 X 2 ) can be suppressed, and the time required for fluorination of HN (SO 2 X 1 ) (SO 2 X 2 ) can be shortened.
- the amount of the alkali metal fluoride MF reacted in the second step is preferably excessive in molar amount with respect to the first intermediate product.
- the amount of the alkali metal fluoride added in the second step is excessive in molar amount with respect to the first intermediate product.
- most of the intermediate product (HN (SO 2 X 1 ) (SO 2 X 2 )) using sulfamic acid as a raw material can be fluorinated.
- HN (SO 2 X 1) ( SO 2 X 2) it is possible to reduce the unreacted HN (SO 2 X 1) ( SO 2 X 2), it is possible to increase the yield of the desired product.
- An imide salt represented by MN (SO 2 F) 2 and a salt or acid as an intermediate product have a difference in solubility in a predetermined solvent. Therefore, the target product, MN (SO 2 F) 2, is separated from the intermediate product by a solvent extraction method.
- the polar solvent is preferably a protic polar solvent.
- Alkali metal fluoride MF is more soluble in protic polar solvent than in aprotic polar solvent. For this reason, according to the said invention, reaction of a 2nd intermediate product and alkali metal fluoride MF can be accelerated
- the process proceeds to the next step with reference to the stop of the generation of sulfur dioxide. For this reason, the unreacted substance of sulfamic acid decreases, and the yield increases.
- thionyl chloride (SOCl 2 ), sulfamic acid (NH 2 —SO 2 OH), and chlorosulfonic acid (HSO 3 Cl) are mixed and reacted.
- Thionyl chloride (SOCl 2 ) acts as a chlorine donor for sulfamic acid (NH 2 —SO 2 OH).
- a first intermediate product is obtained.
- the first intermediate product includes HN (SO 2 Cl) 2 .
- the first step in addition to HN (SO 2 Cl) 2 , sulfur dioxide, hydrochloric acid, sulfuric acid and nitric acid are produced as by-products.
- the amount of nitric acid produced is very small compared to the amount of hydrochloric acid and sulfuric acid produced. That is, most of the sulfamic acid is considered to be converted to HN (SO 2 Cl) 2 .
- substances other than HN (SO 2 Cl) 2 are referred to as first by-products.
- the first by-product includes thionyl chloride remaining without reacting.
- potassium fluoride KF
- KF potassium fluoride
- a product obtained by removing excess thionyl chloride from the first intermediate product and both are reacted.
- KN (SO 2 F) (SO 2 Cl) is obtained.
- one chlorine in HN (SO 2 Cl) (SO 2 Cl) is substituted with fluorine, but the other chlorine is not substituted with fluorine.
- Sulfuric acid, hydrochloric acid, and nitric acid react with potassium fluoride to form salts.
- the amount of potassium fluoride is an excess amount with respect to the first intermediate product in a molar amount.
- the product generated in the second step is defined as a second intermediate product, and a substance other than KN (SO 2 F) (SO 2 Cl) in the second intermediate product is defined as a second by-product.
- Example 1 Sulfamic acid, chlorosulfonic acid and thionyl chloride are mixed in an inert atmosphere so that the molar ratio is 1.0: 1.0: 2.4, and heated while refluxing. The temperature is 130 ° C.
- a calcium chloride tube is attached to the vapor outlet of the reaction system to cool the entire reaction system so that moisture does not enter the reaction system. This prevents the HN (SO 2 Cl) 2 is hydrolyzed by water ingress.
- the first intermediate product is allowed to stand under reduced pressure (650 Pa or less) for a predetermined time to remove thionyl chloride (SOCl 2 ) from the first intermediate product. This is due to the following reason. Thionyl chloride (SOCl 2 ) and water react violently. On the other hand, in the post process, there is a process of adding water.
- the reaction of potassium fluoride (KF) and the intermediate product A can also be performed in a solvent.
- HN (SO 2 Cl) 2 is hydrolyzed, water cannot be used as a solvent.
- a polar solvent other than water may be used, but since the solubility of potassium fluoride (KF) in a polar solvent other than water is low, the reaction rate between potassium fluoride (KF) and the first intermediate product becomes slow.
- both reactions are fast.
- the amount of potassium fluoride (KF) is excessive in molar amount relative to the amount of intermediate product A. Further, the amount of potassium fluoride (KF) may be determined as follows. That is, a sufficient amount capable of converting substantially the entire amount of HN (SO 2 Cl) 2 into KN (SO 2 F) 2 and converting almost the entire amount of sulfuric acid and hydrochloric acid produced as by-products into salts, The amount of potassium fluoride (KF) used.
- the amount of potassium fluoride is made large excessive. That is, the amount of potassium fluoride (KF) input is determined in consideration of the amount of potassium fluoride dissolved in water in the third step. In this case, it is possible to save the trouble of re-introducing potassium fluoride (KF) in the third step.
- KN (SO 2 F) 2 is extracted from the third intermediate product of the third step. Specifically, the third intermediate product is depressurized to remove water. Thereby, a mixed powder (dried material) of potassium fluoride (KF), potassium chloride (KCl), potassium sulfate (K 2 SO 4 ), potassium nitrate (KNO 3 ), and KN (SO 2 F) 2 is obtained.
- KF potassium fluoride
- KCl potassium chloride
- K 2 SO 4 potassium sulfate
- KNO 3 potassium nitrate
- KN (SO 2 F) 2 does not dissolve in the mixed solution. For this reason, KN (SO 2 F) 2 is precipitated from the mixed solution.
- KN (SO 2 F) 2 is separated by filtering or centrifuging the mixture.
- a column chromatography method can also be used as a column chromatography method.
- the yield of KN (SO 2 F) 2 produced as described above was 90% based on sulfamic acid.
- the product obtained in the fourth step was dissolved in water and analyzed by 19 F-NMR method to determine the yield. Further, according to the result of ion chromatography analysis of the product obtained in the fourth step, F ⁇ is 0.17 ppm, Cl ⁇ is less than 0.1 ppm, SO 4 2 ⁇ is 0.19 ppm, and K + is 1.5 ppm. Met. That is, it was confirmed that KN (SO 2 F) 2 was obtained by the above production method.
- Example 2 A method for producing KN (SO 2 F) 2 using sulfamic acid, fluorosulfonic acid, and thionyl chloride as raw materials will be described.
- Example 2 fluorosulfonic acid was used in place of the chlorosulfonic acid of Example 1.
- potassium fluoride KF
- KF potassium fluoride
- MN (SO 2 F) 2 MN (SO 2 F) 2 (M is an alkali metal) other than KN (SO 2 F) 2 is used as the target product
- the alkali metal fluoride added in the second step is used as the metal corresponding to the target product. Fluoride is used.
- LiF is used when producing LiN (SO 2 F) 2 .
- NaF is used when producing NaN (SO 2 F) 2 .
- RbF is used when producing RbN (SO 2 F) 2 .
- CsF is used when producing CsN (SO 2 F) 2 .
- MN (SO 2 F) 2 The manufacturing method of MN (SO 2 F) 2 is the same as that of Example 1, and MN (SO 2 F) 2 can be obtained through the first to fourth steps. Further, in the manufacturing process of MN (SO 2 F) 2 , fluorosulfonic acid (HSO 3 F) may be used instead of chlorosulfonic acid (HSO 3 Cl) used in the first process.
- fluorosulfonic acid HSO 3 F
- Cl chlorosulfonic acid
- the amount of the alkali metal fluoride MF to be reacted in the second step is excessive in molar amount with respect to the first intermediate product.
- water that is a protic polar solvent is used in order to further advance the reaction between the dried product of the second intermediate product and the alkali metal fluoride (MF).
- the alkali metal fluoride MF is more soluble in the protic polar solvent than in the aprotic polar solvent. Therefore, it is possible to accelerate the reaction between the MN (SO 2 X 1) ( SO 2 F) an alkali metal fluoride MF.
- the second step is performed. That is, in the first step, sulfur dioxide is generated by the reaction of thionyl chloride and sulfamic acid. Since the process shifts to the next step with reference to the stop of the generation of sulfur dioxide, the amount of unreacted sulfamic acid can be reduced. In addition, it can confirm that generation
- water is used a protic polar solvent as a solvent, which dissolves the life-and-death dissolved alkali metal fluoride MF MN (SO 2 X 1) (SO 2 F)
- a protic polar solvent as a solvent, which dissolves the life-and-death dissolved alkali metal fluoride MF MN (SO 2 X 1) (SO 2 F)
- Any solvent may be used as long as it exists.
- ethanol, acetonitrile or the like can be used instead of water.
- thionyl chloride (SOCl 2 ), sulfamic acid (NH 2 —SO 2 OH), and chlorosulfonic acid (HSO 3 Cl) were mixed and reacted. You may mix in several steps. For example, first, sulfamic acid (NH 2 —SO 2 OH) and thionyl chloride (SOCl 2 ) are mixed. After sufficiently reacting both, chlorosulfonic acid (HSO 3 Cl) is mixed and heated. Also by such a method, HN (SO 2 Cl) 2 which is the target product in the first step can be obtained.
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Abstract
Description
<実施例1>
(第1工程)
スルファミン酸、クロロスルホン酸、塩化チオニルを不活性雰囲気で、モル比1.0:1.0:2.4となるように混合し、還流しながら加熱する。温度は130℃とする。
(第2工程)
第1中間生成物を減圧下(650Pa以下)に所定時間放置し、第1中間生成物から塩化チオニル(SOCl2)を除去する。これは、次の理由による。塩化チオニル(SOCl2)と水とは激しく反応する。一方、後工程では、水を加える処理がある。塩化チオニル(SOCl2)が残存する場合、水と塩化チオニルとの反応により、反応系全体を制御することができなくなる。そして、第1中間生成物から余剰の塩化チオニルを除去した中間生成物(以下、中間生成物A)とフッ化カリウム(KF)とを無溶媒で反応させる。具体的には、予め乾燥した粉末状のフッ化カリウム(KF)に中間生成物Aを滴下することにより、両者を反応させる。このとき、フッ化カリウム(KF)とHN(SO2Cl)2とが反応し、KN(SO2F)(SO2Cl)が生成される。また、副生成物としてHClが発生する。HClが発生しなくなったとき、あるいは発熱がなくなったとき、反応が終了する。
第3工程では、第2中間生成物に水を加えて、KN(SO2F)(SO2Cl)とフッ化カリウム(KF)とを反応させる。そして、この溶液を室温で12時間撹拌する。このとき、室温以上の温度にして撹拌してもよい。この処理により、KN(SO2F)2が生成される。
第4工程では、第3工程の第3中間生成物からKN(SO2F)2を抽出する。具体的には、第3中間生成物を減圧し、水を除去する。これにより、フッ化カリウム(KF)、塩化カリウム(KCl)、硫酸カリウム(K2SO4)、硝酸カリウム(KNO3)、KN(SO2F)2の混合粉末(乾燥物)が得られる。
スルファミン酸、フルオロスルホン酸、塩化チオニルを原料とする、KN(SO2F)2の製造方法を説明する。
KN(SO2F)2以外のMN(SO2F)2(Mはアルカリ金属)を目的生成物とするときは、第2工程で加えるアルカリ金属フッ化物として、目的生成物に対応する金属のフッ化物を用いる。具体的には、LiN(SO2F)2を生成するときはLiFを用いる。NaN(SO2F)2を生成するときはNaFを用いる。RbN(SO2F)2を生成するときはRbFを用いる。CsN(SO2F)2を生成するときはCsFを用いる。
Claims (6)
- MN(SO2F)2(Mはアルカリ金属)で示されるイミド塩の製造方法であって、
スルファミン酸とハロゲン化スルホン酸と塩化チオニルとの混合物を加熱反応させて、第1中間生成物を生成する第1工程と、
前記第1中間生成物から未反応の前記塩化チオニルを除去したものに無溶媒でアルカリ金属フッ化物MFを加えて反応させ、第2中間生成物を生成する第2工程と、
前記第2中間生成物とアルカリ金属フッ化物MFとを極性溶媒中で反応させて、前記イミド塩を生成する第3工程と
を含むことを特徴とするイミド塩の製造方法。 - 請求項1に記載のイミド塩の製造方法において、
前記第2工程で反応させる前記アルカリ金属フッ化物MFの量は、前記第1中間生成物に対してモル量で過剰であることを特徴とするイミド塩の製造方法。 - 請求項1または2に記載のイミド塩の製造方法において、
前記第3工程で生成された第3中間生成物から前記極性溶媒を除去して乾燥物とし、溶媒抽出により前記乾燥物から前記イミド塩を分離することを特徴とするイミド塩の製造方法。 - 請求項1~3のいずれか一項に記載のイミド塩の製造方法において、
前記第1中間生成物と前記アルカリ金属フッ化物MFとを反応させる前に、前記アルカリ金属フッ化物MFから水分を除去することを特徴とするイミド塩の製造方法。 - 請求項1~4のいずれか一項に記載のイミド塩の製造方法において、
前記極性溶媒は、プロトン性極性溶媒であることを特徴とするイミド塩の製造方法。 - 請求項1~5のいずれか一項に記載のイミド塩の製造方法において、
前記第1工程で気体の発生が止まった後に、前記第2工程を行うことを特徴とするイミド塩の製造方法。
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KR1020147006185A KR101901480B1 (ko) | 2011-10-18 | 2012-09-25 | 이미드염의 제조 방법 |
US14/352,175 US9352966B2 (en) | 2011-10-18 | 2012-09-25 | Method for producing imide salt |
CN201280050861.XA CN103889893B (zh) | 2011-10-18 | 2012-09-25 | 制造酰亚胺盐的方法 |
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JP2011229128A JP5899789B2 (ja) | 2011-10-18 | 2011-10-18 | イミド塩の製造方法 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150175422A1 (en) * | 2012-08-06 | 2015-06-25 | Nippon Soda Co., Ltd. | Method for producing bis(halosulfonyl)amine |
EP3045426B1 (en) | 2013-11-18 | 2018-11-14 | Nippon Soda Co., Ltd. | Granules or powder of disulfonylamide salt, and method for producing same |
Families Citing this family (7)
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FR3014438B1 (fr) * | 2013-12-05 | 2017-10-06 | Rhodia Operations | Procede de preparation d'un compose fluore et soufre et de ses sels en milieu aqueux |
FR3020060B1 (fr) * | 2014-04-18 | 2016-04-01 | Arkema France | Preparation d'imides contenant un groupement fluorosulfonyle |
US10020538B2 (en) | 2015-11-13 | 2018-07-10 | Uchicago Argonne, Llc | Salts for multivalent ion batteries |
CN109835876B (zh) * | 2017-11-28 | 2022-11-29 | 株式会社日本触媒 | 双(氟磺酰)亚胺锂组合物 |
CN108275666B (zh) * | 2018-01-25 | 2021-04-27 | 广州理文科技有限公司 | 一种双(氟磺酰)亚胺碱金属盐的制备方法 |
FR3081456B1 (fr) * | 2018-05-23 | 2020-12-18 | Arkema France | Procede de preparation de sel d'imides contenant un groupement fluorosulfonyle |
FR3081720A1 (fr) * | 2018-06-01 | 2019-12-06 | Arkema France | Procede de recuperation et/ou purification d'un sel de potassium du bis(fluorosulfonyl)imide |
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JP2001288193A (ja) * | 2000-01-31 | 2001-10-16 | Morita Kagaku Kogyo Kk | スルホニルイミド化合物の製造方法 |
WO2010010613A1 (ja) * | 2008-07-23 | 2010-01-28 | 第一工業製薬株式会社 | ビス(フルオロスルホニル)イミドアニオン化合物の製造方法およびイオン対化合物 |
JP2010189372A (ja) * | 2008-03-31 | 2010-09-02 | Nippon Shokubai Co Ltd | フルオロスルホニルイミド類およびその製造方法 |
WO2010140580A1 (ja) * | 2009-06-03 | 2010-12-09 | セントラル硝子株式会社 | イミド酸塩の製造方法 |
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EP2257495B1 (en) * | 2008-03-31 | 2013-07-03 | Nippon Shokubai Co., Ltd. | Sulfonylimide salt and method for producing the same |
CN101747242B (zh) | 2008-11-28 | 2013-06-19 | 华中科技大学 | 双(氟磺酰)亚胺和(全氟烷基磺酰基氟磺酰基)亚胺碱金属盐的制备方法 |
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Patent Citations (4)
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JP2001288193A (ja) * | 2000-01-31 | 2001-10-16 | Morita Kagaku Kogyo Kk | スルホニルイミド化合物の製造方法 |
JP2010189372A (ja) * | 2008-03-31 | 2010-09-02 | Nippon Shokubai Co Ltd | フルオロスルホニルイミド類およびその製造方法 |
WO2010010613A1 (ja) * | 2008-07-23 | 2010-01-28 | 第一工業製薬株式会社 | ビス(フルオロスルホニル)イミドアニオン化合物の製造方法およびイオン対化合物 |
WO2010140580A1 (ja) * | 2009-06-03 | 2010-12-09 | セントラル硝子株式会社 | イミド酸塩の製造方法 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150175422A1 (en) * | 2012-08-06 | 2015-06-25 | Nippon Soda Co., Ltd. | Method for producing bis(halosulfonyl)amine |
US9650250B2 (en) * | 2012-08-06 | 2017-05-16 | Nippon Soda Co., Ltd. | Method for producing bis(halosulfonyl)amine |
EP3045426B1 (en) | 2013-11-18 | 2018-11-14 | Nippon Soda Co., Ltd. | Granules or powder of disulfonylamide salt, and method for producing same |
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Publication number | Publication date |
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CN103889893A (zh) | 2014-06-25 |
KR101901480B1 (ko) | 2018-09-21 |
US9352966B2 (en) | 2016-05-31 |
US20140241973A1 (en) | 2014-08-28 |
KR20140078616A (ko) | 2014-06-25 |
JP5899789B2 (ja) | 2016-04-06 |
CN103889893B (zh) | 2016-08-17 |
JP2013087019A (ja) | 2013-05-13 |
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