Catalytic reactivity of polyoxometalatetes adsorbed in microporous carbons

INOR 695

John Walker, John.e.Walker1@us.army.mil, U.S. Army Natick Soldier Research, Development and Engineering Center, Kansas Street, Natick, MA 01760, Heidi Schreuder-Gibson, heidi.schreudergibson@us.army.mil, Natick Soldier Center, U.S. Army Research Development and Engineering Command, AMSRD-NSC-SS-MS, 40 Kansas St., Natick, MA 01760-5020, Walter Yeomans, U.S. Army Soldier Systems Center, AMSSB-RSS-MS, Kansas Street, Natick, MA 01760-5020, Derek Ball, derekhball@aol.com, Macromolecular Science Team, U.S. Army Natick Soldier Research, Development & Engineering Center, AMSRD-NSC-WS-M, 15 Kansas St., Natick, MA 01760-5020, and Craig Hill, Department of Chemistry, Emory Universtiy, 1515 Pierce Dr, Atlanta, GA 30329.
Effective matrices (porous, robust etc) for immobilization of polyoxometalate catalysts are of considerable interest and potential value. The attractive properties (highly modifiable, robust, inexpensive and non toxic) have made them some of the most actively developed and commercialized catalysts in both homogeneous and heterogeneous modes. Heteropolyacids of the type H5PV2Mo10O40 were demonstrated to be effective in the decontamination of chemical warfare (CW) agents [Inorg. Chem. 33 5015 (1994)] The significant and specific challenges that are addressed in this paper are the design and formulation (synthesis) of new polyxometalates (e.g. [(FeOH2)2Fe2(P2W15O56)2]12- that are able to exhibit reversible redox behavior using atmospheric oxygen. These new classes of oxometalates have been demonstrated to simultaneously decontaminate chemical CW agents and yet retain the requisite properties to be incorporated into microporous carbon systems. Incorporation of these immobilized reactive catalysts into fabric systems, their reactivity against CW agents and their stability will be discussed.
 

Polyoxometalates and Related Clusters in Chemistry and Nanoscience
7:00 PM-10:00 PM, Tuesday, August 21, 2007 BCEC -- Exhibit Hall - B2, Poster

Division of Inorganic Chemistry

The 234th ACS National Meeting, Boston, MA, August 19-23, 2007