Eltron Research, Inc.

Eltron Research & Development, Inc.

US Government As Represented by the Secretary of the Army

Electric Power Research Institute Incorporated

James H White

Michael F Schwartz

Anthony F Sammells

Jesse Wade Taylor

Sara L Rolfe

Shane E Roark

Erick J Schutte

Stephen T Hobson

Ernest H Braue, Jr

Richard Bley

Anthony F Sammels

Processes are disclosure which comprise alternately contacting an oxygen-carrying catalyst with a reducing substance, or a lower partial pressure of an oxidizing gas, and then with the oxidizing gas or a higher partial pressure of the oxidizing gas, whereby the catalyst is alternately reduced and then regenerated to an oxygenated state. In certain embodiments, the oxygen-carrying catalyst comprises at least one metal oxide-containing material containing a composition having the following formulas: (a) CeBB'B&#x2033;O, wherein B=Ba, Sr, Ca, or Zr; B&#x2032;=Mn, Co, and/or Fe; B&#x2033;=Cu; 0.01&#x3c;x&#x3c;0.99; 0&#x3c;y&#x3c;0.6; 0&#x3c;z&#x3c;0.5; (b) CeNiBO, wherein B=Zr, Ba, Ca, La, or K; 0.02&#x3c;x&#x3c;0.1; 0&#x3c;y&#x3c;0.1; and 0.02&#x3c;*&#x3c;0.15; and 1&#x3c;&#x3b4;&#x3c;2.2 and (c) coal ash either as a catalyst material itself or as a support for said unary or binary metal oxides.

Cyclic catalytic upgrading of chemical species using metal oxide materials

Provided herein are adsorbents and methods of using the adsorbents to at least partially remove one or more adsorbates. In an aspect, an adsorbate within a phase is at least partially removed by providing an adsorbent material and contacting the adsorbent material with the phase having an adsorbate, to at least partially remove the adsorbate. Various adsorbents are disclosed having the chemical formula REBB'B&#x2033;O, where RE is RE is a rare earth metal, B is a trivalent metal ion, B&#x2032; is a transition metal ion or an alkaline earth element, B&#x2033; is a transition metal ion, 0&#x2266;x&#x2266;0.25, 0&#x2266;y&#x2266;0.95, 0&#x2266;z&#x2266;0.75, w is a number which results in charge balance, and x+y+z&#x3c;1.

Metal oxide system for adsorbent applications

Processes are disclosure which comprise alternately contacting an oxygen-carrying catalyst with a reducing substance, or a lower partial pressure of an oxidizing gas, and then with the oxidizing gas or a higher partial pressure of the oxidizing gas, whereby the catalyst is alternately reduced and then regenerated to an oxygenated state. In certain embodiments, the oxygen-carrying catalyst comprises at least one metal oxide-containing material containing a composition having one of the following formulas: (a) CeBB'B&#x2033;O, wherein B=Ba, Sr, Ca, or Zr; B&#x2032;=Mn, Co, or Fe; B&#x2033;=Cu; 0.01&#x3c;x&#x3c;0.99; 0&#x3c;y&#x3c;0.6; 0&#x3c;z&#x3c;0.5; and 1&#x3c;&#x3b4;&#x3c;2.2; (b) SrLaBB&#x2032;B&#x2033;O, wherein B=Co or Fe; B&#x2032;=Al or Ga; B&#x2033;=Cu; 0.01&#x3c;v&#x3c;1.4; 0.1&#x3c;w&#x3c;1.6; 0.1&#x3c;x&#x3c;1.9; 0.1&#x3c;y&#x3c;0.9; 0&#x3c;z&#x3c;2.2; and 3&#x3c;&#x3b4;&#x3c;5.5).

Catalyst compositions and methods for F-T synthesis which exhibit high CO conversion with minor levels (preferably less than 35% and more preferably less than 5%) or no measurable carbon dioxide generation. F-T active catalysts are prepared by reduction of certain oxygen deficient mixed metal oxides.

Fischer-tropsch catalysts

This invention relates to gas-impermeable, solid state materials fabricated into membranes for use in catalytic membrane reactors. This invention particularly relates to solid state oxygen anion- and electron-mediating membranes for use in catalytic membrane reactors for promoting partial or full oxidation of different chemical species, for decomposition of oxygen-containing species, and for separation of oxygen from other gases. Solid state materials for use in the membranes of this invention include mixed metal oxide compounds having the brownmillerite crystal structure.

Solid state oxygen anion and electron mediating membrane and catalytic membrane reactors containing them

Catalyst compositions are provided that are useful in selectively removing carbon monoxide from a hydrogen-containing gas. These catalyst compositions preferably have the formula: nN/Ce A A&prime; A&Prime; O , where A, A&prime;, A&Prime; are independently selected from the group consisting of: Zr, Gd, La, Sc, Sr, Co, Cr, Fe, Mn, V, Ti, Cu and Ni; N is one or more members of the group consisting of: Pt, Pd, and Au; n is a weight percent between 0 and 25; x, y and z are independently 0 to 0.9; x&plus;y&plus;z is 0.1 to 0.9; and &dgr; is a number which renders the composition charge neutral; or nN/(MO ) (CeO ) , where M is one or more members of the group selected from: Zr, Co, Cr, Fe, Mn, V, Ti, Ni and Cu; N is one or more members of the group selected from: Pt, Pd, and Au; n is a weight percent between 0 and 25; y is 0.1 to 0.9; and x and &dgr; make the compositions charge neutral.

Selective removal of carbon monoxide

Catalyst compositions for destruction of volatile organic carbons (VOCs) in an oxygen-containing gas stream at low temperatures comprising: one or more first metals selected from the group consisting of: Ce and Zr; and at least one of: (a) one or more second metals selected from the group consisting of: Gd, La, Sr and Sc; (b) one or more third metals selected from the group consisting of: Ti, V, Mn, Fe, Co, Cr, Ni, Au, Ag and Cu; and (c) one or more fourth metals selected from the group consisting of Pt, Pd, Rh, Ru, Re, Os and Ir are provided. Catalyst compositions provided may be single-phase, mixed-metal oxides, or multi-phase. Catalysts of this invention have improved activity for VOC reduction at low temperatures in gaseous systems.

Catalysts for low-temperature destruction of volatile organic compounds in air

A topical skin protectant formulation containing a barrier cream and an active moiety for protecting warfighters and civilians against all types of harmful chemicals, specifically chemical warfare agents (CWA's). The topical skin protectant offers a barrier property and an active moiety that serves to neutralize chemical warfare agents into less toxic agents.

Active topical skin protectants using polyoxometallates

This invention relates to catalytic reactor membranes having a gas-impermeable membrane for transport of oxygen anions. The membrane has an oxidation surface and a reduction surface. The membrane is coated on its oxidation surface with an adherent catalyst layer and is optionally coated on its reduction surface with a catalyst that promotes reduction of an oxygen-containing species (e.g., O , NO , SO , etc.) to generate oxygen anions on the membrane. The reactor has an oxidation zone and a reduction zone separated by the membrane. A component of an oxygen containing gas in the reduction zone is reduced at the membrane and a reduced species in a reactant gas in the oxidation zone of the reactor is oxidized. The reactor optionally contains a three-dimensional catalyst in the oxidation zone. The adherent catalyst layer and the three-dimensional catalyst are selected to promote a desired oxidation reaction, particularly a partial oxidation of a hydrocarbon.

Two component-three dimensional catalysis

Solid state proton and electron mediating membrane and use in catalytic membrane reactors

A process for production of synthesis gas employing a catalytic membrane reactor wherein the membrane comprises a mixed metal oxide material.

Mixed electron- and proton-conducting metal oxide materials are provided. These materials are useful in fabrication of membranes for use in catalytic membrane reactions, particularly for promoting dehydrogenation of hydrocarbons, oligomerization of hydrocarbons and for the decomposition of hydrogen-containing gases. Membrane materials are perovskite compounds of the formula:

Solid state proton and electron mediating membrane and use in catalytic

The method for the reagentless removal of nitrogen oxides from oxygen rich exhaust streams which includes impinging the exhaust gases upon a catalyst which includes a Lewis base metal cation, bismuth oxide and a mixture of transition metal cations.

Method for the reagentless removal of nitrogen oxides from exhaust

Solid state oxygen anion and electron mediating membrane and catalytic

The invention provides various solid catalysts for decomposition of exhaust gases. Catalysts include, among others, those of formula Ce.sub.0.5 La.sub.0.4 Sr.sub.0.1 Pd.sub.0.025 O.sub.3x and BiCo.sub.0.8 Cu.sub.0.2 O.sub.3x. The invention also relates to catalytic reactors for decomposition of exhaust gases utilizing solid catalysts of the invention. The invention further provides methods for synthesis of various mixed metal oxide catalysts for decomposition of exhaust gas pollutants.

Growing community of inventors

Boulder, CO, United States of America

James H White