Separation method for halogenated unsaturated carbon compound

Patent metadata

Field	Value
Publication number	US-11053180-B2
Application number	US-202016845834-A
Country	US
Kind code	B2
Filing date	Apr 10, 2020
Priority date	Aug 17, 2015
Publication date	Jul 6, 2021
Grant date	Jul 6, 2021

Abstract

The method according to this disclosure is a method for separating an unsaturated hydrocarbon having 2 or 3 carbon atoms and a halogenated unsaturated carbon compound formed by replacing at least one of hydrogen atoms included in the unsaturated hydrocarbon with a fluorine atom, from each other and is a method for selectively adsorbing either the unsaturated hydrocarbon or the halogenated unsaturated carbon compound by a porous coordination polymer that includes a metallic ion having a valence of 2 to 4 and an aromatic anion having 1 to 6 aromatic ring(s).

First claim

The invention claimed is:

1. A porous coordination polymer comprising a halogenated unsaturated carbon compound having 2 or 3 carbon atoms stored therein, wherein
the porous coordination polymer is represented by a composition formula [Cr 3 O(OH)(bdc) 3 ] where bdc is 1,4-benzenedicarboxylate, [Ni 2 (dhtp)] where dhtp is 2,5-dihydroxyterephthalate, or [Zr 6 O 4 (OH) 4 (bpdc) 6 ] where bpdc is 4,4′-biphenyldicarboxylate.

2. The porous coordination polymer according to claim 1 , wherein
the halogenated unsaturated carbon compound is one or more compound(s) selected from the group consisting of difluoroethylene, trifluoroethylene, tetrafluoroethylene, and hexafluoropropyl ene.

3. The porous coordination polymer according to claim 1 , wherein
a storage amount of the halogenated unsaturated carbon compound at a temperature of 298K and at an adsorption gas pressure of 100 kPa that is an absolute pressure is 25 to 35% by weight relative to a total of a weight of the porous coordination polymer and a weight of the halogenated unsaturated carbon compound.

4. The porous coordination polymer according to claim 1 , wherein the porous coordination polymer is represented by the composition formula [Cr 3 O(OH)(bdc) 3 ] where bdc is 1,4-benzenedicarboxylate.

5. The porous coordination polymer according to claim 1 , wherein the porous coordination polymer is represented by the composition formula [Ni 2 (dhtp)] where dhtp is 2,5-dihydroxyterephthalate.

6. The porous coordination polymer according to claim 1 , wherein the porous coordination polymer is represented by the composition formula [Zr 6 O 4 (OH) 4 (bpdc) 6 ] where bpdc is 4,4′-biphenyldicarboxylate.

Assignees

• Daikin Ind Ltd
• Univ Kyoto

Inventors

• Morikawa Tatsuya
• Shimokawa Mana
• Fujiwara Katsuki
• Tokuno Satoshi
• Higuchi Masakazu
• Kitagawa Susumu

Classifications

• B01J20/226 Primary

  Coordination polymers, e.g. metal-organic frameworks [MOF], zeolitic imidazolate frameworks [ZIF] (preparation of metal complexes containing carboxylic acid moieties C07C51/418; MOF's per se C07F) · CPC title

• C07F11/00

  Compounds containing elements of Groups 6 or 16 of the Periodic Table · CPC title

• C07C65/03

  monocyclic and having all hydroxy or O-metal groups bound to the ring · CPC title

• C07C11/04

  Ethene · CPC title

• C07C21/185

  Tetrafluoroethene · CPC title