COMPLEX SOLUTION FOR SEPARATING OXYGEN AND SEPARATION OF OXYGEN

摘要

PROBLEM TO BE SOLVED: To obtain the subject solution capable of adsorbing oxygen to precipitate a solid phase and separating oxygen from an oxygen-containing gas in high efficiency, by dissolving a specific cobalt Schiff base complex and an axial ligand coordinating in the 5 site in its axial direction in an organic solvent. SOLUTION: This complex solution for separating oxygen is obtained by dissolving a cobalt Schiff base complex of the formula (R1 to R3 are each H, phenyl or a 1-10C alkyl or alkoxy, R4 to R6 are each phenyl, a 1-10C alkyl or alkoxy or a halogen; Me is methyl) and an axial ligand coordinating in the 5 site in its axial direction (e.g. imidazole) in an organic solvent (e.g. o- dichlorobenzene) in 0.1-1mol/1 concentration of the cobalt Schiff base complex and is capable of separating oxygen from an oxygen-containing gas such as air in high efficiency by a phase separation due to the binding of the oxygen- adsorbed complex to oxygen to cause precipitation as a solid phase.