Metal complex, and absorbent, occlusion material and separation material produced therefrom

Patent metadata

Field	Value
Publication number	US-2015165415-A1
Application number	US-201314411598-A
Country	US
Kind code	A1
Filing date	Jun 28, 2013
Priority date	Jul 4, 2012
Publication date	Jun 18, 2015
Grant date	—

Abstract

An object is to provide a metal complex with high water resistance.
The above object is achieved by the metal complex comprising a multivalent carboxylic acid compound, a metal ion belonging to Groups 2 to 13 of the periodic table, an organic ligand capable of multidentate binding to the metal ion, and a monodentate organic ligand capable of binding to the metal ion. The metal complex has excellent gas adsorption, storage, and separation performance as well as excellent water resistance. The metal complex is stably present under high temperature and high humidity conditions, and can maintain high adsorption performance.

First claim

1 . A metal complex, comprising:
a multivalent carboxylic acid compound, a metal ion, which is an ion of a metal belonging to Groups 2 to 13 of the periodic table, an organic ligand capable of multidentate binding to the metal ion, and a monodentate organic ligand capable of binding to the metal ion.

2 . The metal complex according to claim 1 , wherein the monodentate organic ligand comprises a C1-23 hydrocarbon group as a substituent.

3 . The metal complex according to claim 2 , wherein the monodentate organic ligand is a pyridine comprising a C1-23 hydrocarbon group as a substituent.

4 . The metal complex according to claim 1 , wherein the multivalent carboxylic acid compound is a dicarboxylic acid compound.

5 . The metal complex according to claim 1 , wherein the organic ligand capable of multidentate binding is at least one member selected from the group consisting of 1,4-diazabicyclo[2.2.2]octane, pyrazine, 2,5-dimethylpyrazine, 4,4′-bipyridyl, 2,2′-dimethyl-4,4′-bipyridine, 1,2-bis(4-pyridyl)ethyne, 1,4-bis(4-pyridyl) butadiyne, 1,4-bis(4-pyridyl)benzene, 3,6-di(4-pyridyl)-1,2,4,5-tetrazine, 2,2′-bi-1,6-naphthyridine, phenazine, diazapyrene, 2,6-di(4-pyridyl)-benzo[1,2-c:4,5-c′]dipyrrole-1,3,5,7(2H,6H)-tetrone, N,N′-di(4-pyridyl)-1,4,5,8-naphthalene tetracarboxlic diimide, trans-1,2-bis(4-pyridyl)ethene, 4,4′-azopyridine, 1,2-bis(4-pyridyl)ethane, 4,4′-dipyridyl sulfide, 1,3-bis(4-pyridyl)propane, 1,2-bis(4-pyridyl)-glycol, and N-(4-pyridyl)isonicotinamide.

6 . An adsorbent material, comprising:
the metal complex according to claim 1 .

7 . The adsorbent material according to claim 6 , wherein the adsorbent material absorbs carbon dioxide, hydrogen, carbon monoxide, oxygen, nitrogen, hydrocarbons comprising from 1 to 4 carbon atoms, noble gases, hydrogen sulfide, ammonia, sulfur oxides, nitrogen oxides, siloxanes, or organic vapor.

8 . A storage material, comprising:
the metal complex according to claim 1 .

9 . The storage material according to claim 8 , wherein the storage material stores carbon dioxide, hydrogen, carbon monoxide, oxygen, nitrogen, hydrocarbons comprising from 1 to 4 carbon atoms, noble gases, hydrogen sulfide, ammonia, or organic vapor.

10 . A gas storage device, comprising:
a pressure-resistant container that is hermetically sealed and comprises an inlet and outlet for gas and a gas storage space therein, and the storage material according to claim 8 , wherein the storage material is placed in the gas storage space.

11 . A gaseous-fuel vehicle, comprising:
an internal combustion engine that obtains driving force from fuel gas supplied from the gas storage device according to claim 10 .

12 . A separation material, comprising:
the metal complex according to claim 1 .

13 . The separation material according to claim 12 , wherein the separation material separates carbon dioxide, hydrogen, carbon monoxide, oxygen, nitrogen, hydrocarbons comprising from 1 to 4 carbon atoms, noble gases, hydrogen sulfide, ammonia, sulfur oxides, nitrogen oxides, siloxanes, or organic vapor.

14 . The separation material according to claim 12 , wherein the separation material separates methane and carbon dioxide, hydrogen and carbon dioxide, nitrogen and carbon dioxide, ethylene and carbon dioxide, methane and ethane, ethane and ethylene, propane and propene, or air and methane.

15 . A method for separating a gas mixture, the method comprising:
bringing the metal complex comprised in the separation material according to claim 12 into contact with the gas mixture in a pressure range of 0.01 to 10 MPa.

16 . The method according to claim 15 , wherein the method is a pressure swing adsorption process or a temperature swing adsorption process.

17 . A method for producing the metal complex according to claim 1 , the method comprising:
reacting, in a solvent, the multivalent carboxylic acid compound, the metal ion, the organic ligand, and the monodentate organic ligand to precipitate.

Assignees

• Kuraray Co

Inventors

• Inubushi Yasutaka
• Ikeda Chikako
• Hori Takashi
• Yane Takako

Classifications

• B01D53/02 Primary

  by adsorption, e.g. preparative gas chromatography {(solid sorbent compositions B01J20/00, preparation of inorganic compounds or elements C01)} · CPC title

• B01D2259/4566

  for use in transportation means · CPC title

• C07F1/08 Primary

  Copper compounds · CPC title

• B01D53/047

  Pressure swing adsorption · CPC title

• B01D2259/4525

  for storage and dispensing systems · CPC title