Basf Aktiengesellschaft

Michigan State University

Klaus Kühling

Hans-Josef Sterzel

Otto Watzenberger

Hendrik Schönfelder

Gabriele Unger

Mercouri G Kanatzidis

Duck-Young Chung

Iron pentacarbonyl is prepared by reacting iron with carbon monoxide in suspension and in the presence of a mixture of alkali metal sulfide and sulfur as a catalyst.

Preparation of iron pentacarbonyl

A thermoelectrically active p- or n-conductive semiconductor material is constituted by a ternary compound of the general formula (I)(PbGe)Te&#x2003;&#x2003;(I)with x value from 0.16 to 0.5,wherein 0 to 10% by weight of the ternary compound may be replaced by other metals or metal compounds, wherein the semiconductor material has a Seebeck coefficient of at least &#xb1;200 &#x3bc;V/K at a temperature of 25&#xb0; C.

Pb-Ge-Te-compounds for thermoelectric generators or Peltier arrangements

Iron pentacarbonyl is prepared by reacting iron with carbon monoxide in suspension and in the presence of a polysulfide of the general formula RSR' as a catalyst, where R is an organic radical and x is a number from 2 to 8.

In a photovoltaic cell having a photovoltaically active semiconductor material constituted by a plurality of metals or metal oxides, the photovoltaically active material is selected from a

Photovoltaically active materials and cells containing them

Capacitors having an inert porous shaped body onto which a first electrically conductive layer, a second layer of barium titanate and a further electrically conductive layer have been applied.

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Mutterstadt, Germany

Klaus Kühling