Patent ID: 6136222
Filing Date: 2000-10-24
Classification: B01D,C01B,C07F

Abstract:
A nitrogen-absorbing and -desorbing composition consisting essentially of a solvent with a solubility parameter of .gtoreq.20 MPa.sup.1/2 and a transition metal complex, said complex comprising(a) a metal selected from Cr, W, Mn, Fe, Co and Ni;(b) at least one reversibly bound molecular nitrogen ligand; and(c) at least one other monodentate or multidentate ligand that, together with said at least one molecular nitrogen ligand provides four, five or six coordinating atoms to the metalwherein said transition metal complex is present in a concentration of .gtoreq.0.1 M in said solvent and said complex enhances the nitrogen solubility therein relative to the nitrogen solubility in said solvent alone.