Reversible oxygen sorbent compositions

Reference Number: N 04-08

Inventors: Ramprasad, Dorai; Pez, Guido P.; Pearlstein, Ronald M.; Meier, Ingrid K.

Owner: NISTAC

USPTO Link: 5208335

Invention Summary

High Capacity solid state cyanocobaltate complexes represented by the chemical formula: where: A is alkali metal atom, alkaline earth metal atom, Zn, Cd or Hg atom; a is any number from 0 to 2.5 each R is independently C.sub.1 -C.sub.1O substituted or unsubstituted alkyl, aryl or aralkyl; or a long chain hydrocarbon polymer b is any number from greater than zero to 3 z is 1, 2 or 3; n is any number from 3 to 5; x is n-2; p is any number from greater than zero to 6; and S is a ligand which is capable of coordinating with [(A).sub.a (R.sub.4 N).sub.b 9 .sup.z+, Co or both. are capable of chemically binding oxygen to form novel oxygen adducts, thereby selectively removing oxygen from an oxygen-containing fluid stream. The bound oxygen may be recovered from the complexes by increasing the temperature or by reducing the partial pressure of O.sub.2 above the adduct.