Production method and production device for ion liquids or ion liquid raw materials

A method for producing an ionic liquid or an ionic liquid raw material, using a reactor having

• a first space that is in contact with an anodic electrode part and a first ion exchange membrane part and that accommodates a first liquid,
• a second space that is in contact with the first ion exchange membrane part and a second ion exchange membrane part and that accommodates a second liquid, and
• a third space that is in contact with the second ion exchange membrane part and a cathodic electrode part and that accommodates a third liquid,
• the first space, the second space, and the third space being stacked in the order presented,
• wherein membranes of the first ion exchange membrane part and the second ion exchange membrane part are both a positive ion exchange membrane,
• the first liquid in the first space is a cationic source or a water-containing liquid for supply,
• the second liquid in the second space is an anionic source, and
• the third liquid in the third space is a water-containing liquid for recovery, and
• wherein cations of the cationic source or hydrogen ions of the liquid for supply are transferred to the second space via the first ion exchange membrane part, and
• cations of the anionic source are transferred to the third space via the second ion exchange membrane part,
• thereby producing, in the second space, the ionic liquid containing cations of the cationic source and anions of the anionic source as constituent ions, or the ionic liquid raw material containing the hydrogen ions of the liquid for supply and anions of the anionic source as constituent ions.

A device for producing an ionic liquid or an ionic liquid raw material, comprising a reactor having

• a first space that is in contact with an anodic electrode part and a first ion exchange membrane part and that accommodates a first liquid,
• a second space that is in contact with the first ion exchange membrane part and a second ion exchange membrane part and that accommodates a second liquid, and
• a third space that is in contact with the second ion exchange membrane part and a cathodic electrode part and that accommodates a third liquid,
• the first space, the second space, and the third space being stacked in the order presented,
• wherein the ion exchange membrane parts both use a negative ion exchange membrane,
• the first liquid in the first space is a water-containing liquid for recovery,
• the second liquid in the second space is a cationic source, and
• the third liquid in the third space is an anionic source or a water-containing liquid for supply, and
• wherein anions of the cationic source are transferred to the first space via the first ion exchange membrane part, and
• anions of the anionic source or hydroxide ions of the liquid for supply are transferred to the second space via the second ion exchange membrane part,
• thereby producing, in the second space, the ionic liquid containing cations of the cationic source and anions of the anionic source as constituent ions, or the ionic liquid raw material containing cations of the cationic source and the hydroxide ions of the liquid for supply as constituent ions.

A device for producing an ionic liquid or an ionic liquid raw material, comprising a reactor having

• a first space that is in contact with an anodic electrode part and a first ion exchange membrane part and that accommodates a first liquid,
• a second space that is in contact with the first ion exchange membrane part and a second ion exchange membrane part and that accommodates a second liquid, and
• a third space that is in contact with the second ion exchange membrane part and a cathodic electrode part and that accommodates a third liquid,
• the first space, the second space, and the third space being stacked in the order presented,
• wherein the ion exchange membrane parts both use a positive ion exchange membrane,
• the first liquid in the first space is a cationic source or a water-containing liquid for supply,
• the second liquid in the second space is an anionic source, and
• the third liquid in the third space is a water-containing liquid for recovery, and
• wherein cations of the cationic source or hydrogen ions of the liquid for supply are transferred to the second space via the first ion exchange membrane part, and
• cations of the anionic source are transferred to the third space via the second ion exchange membrane part,
• thereby producing, in the second space, the ionic liquid containing cations of the cationic source and anions of the anionic source as constituent ions, or the ionic liquid raw material containing the hydrogen ions of the liquid for supply and anions of the anionic source as constituent ions.