Siemens Aktiengesellschaft

Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

Sud-Chemie Ag

Ford-Werke Ag

Angelika Heinzel

Klaus Wanninger

Albert Nazipovich Chigapov

Konstantin Ledjeff

Alexander Susdorf

Jürgen Koy

Peter Hübner

Disclosed is a mixed oxide catalyst, preferably for selective oxidation of CO in hydrogen rich gas mixtures, or in oxygen containing gas mixtures in the presence of water and carbon dioxide, comprising about 15 to 30 at.-% Cu, about 55 to 77 at.-% Mn and about 7.5 to 10 at.-% Ce.

Ce/Cu/Mn-catalysts

The invention provides a rebalance cell for a Cr/Fe redox storage system. The rebalance cell has a catalyst for the reduction of Fe.sup.3+ ions by means of hydrogen. The catalyst separates a gas chamber of the rebalance cell (holding hydrogen) and a liquid chamber of the rebalance cell (holding Fe.sup.3+ electrolyte). The catalyst is in the form of an activated charcoal made hydrophobic and coated with a platinum metal, gold or silver. The catalyst can also be in the form of tungsten carbide made hydrophobic.

Rebalance cell for a Cr/Fe redox storage system

The combination of gold, thallium, lead and bismuth is used as a catalyst in a battery comprised of at least one 'redox' cell to accelerate the oxidation of chromous ions to chromic ions and the reduction of chromic ions to chromous ions. The gold, thallium, lead and bismuth catalyst is coated on an electronically conductive, inert electrode which is in the anode fluid of the 'redox' cell.

Redox battery

Growing community of inventors

Freiburg, Germany

Angelika Heinzel