Patent ID: 9580446
Date: 2017-02-28
CPC Classifications: B01D,B01J,C07C,C07F,D21H

Claim:
1. A gas separating material that selectively separates a target gas defined as a hydrocarbon gas having a carbon-carbon double bond and having 2 or 4 carbon atoms from a mixed gas containing the target gas and a hydrocarbon gas having the same number of carbon atoms as the target gas, comprising a metal complex of: 2,3-pyrazinedicarboxylic acid; at least one metal M ion selected from the group consisting of copper, zinc, and cadmium; an organic ligand (B) capable of bidentate coordination to the metal ion, represented by the following general formula (2): wherein the organic ligand (B) capable of bidentate coordination is 1,2-di(4-pyridyl)ethane represented by the general formula (2) wherein all of R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , and R 12 are hydrogen atoms, and X is —CH 2 —CH 2 —, or 1,3-di(4-pyridyl)propane represented by the general formula (2) wherein all of R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , and R 12 are hydrogen atoms, and X is —CH 2 —CH 2 —CH 2 —; and the composition thereof is the following composition formula (I): wherein M 2+ is an ion of the metal M, A 2− is 2,3-pyrazinedicarboxylate dianion, and B is an organic ligand (B) capable of bidentate coordination to the metal ion, and wherein the target gas is ethylene or 1,3-butadiene.