Process for reversibly binding oxygen
AssigneeAir Products and Chemicals, Inc.
InventorsDorai Ramprasad, Ingrid K. Meier, Ronald M. Pearlstein, Guido P. Pez
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Abstract
High capacity solid state compositions comprising cyanocobaltate complexes have been developed which are capable of reversibly chemically binding oxygen to selectively remove oxygen from an oxygen-containing fluid stream. The cyanocobaltate complexes which make up the compositions comprise a cobalt (II)-containing anion having from 3 to 5 cyanide ligands wherein at least one cyanide stretching mode, as measured by infrared spectroscopy, is between 2074 cm.sup.-1 and 2140 cm.sup.-1. Additionally, these complexes have a charge-balancing cation having a molecular volume in excess of 40.ANG..sup.3.
Claims18
A process for removing oxygen from a fluid stream containing oxygen and at least one other component, said process comprising bringing said fluid stream into contact with a solid state composition comprising one or more cyanocobaltate complexes comprising a cobalt(II)-containing anion having from 3 to 5 cyanide ligands wherein at least one cyanide stretching mode, as measured by infrared spectroscopy, is between 2074 cm.sup.-1 and 2140 cm.sup.-1, and which complex further comprises a charge-balancing cation having a molecular volume in excess of 40.ANG..sup.3, such that said complex selectively and reversibly binds oxygen thereby removing oxygen from the fluid stream.
Dependencies are inferred from the claim text.