Evonik Degussa Gmbh

Matthias Blug

Horst-Werner Zanthoff

Robert Franke

Dirk Fridag

Bart Hamers

Stefan Nordhoff

Julia Strautmann

Jens Busse

Sascha Hoch

Hanna Hahn

Bernhard Kaiser

Wolfram Jaegermann

Wolfram Calvet

Sachsa Hoch

Busse Jens

The invention relates to a photoelectrochemical cellfor light-driven production of hydrogen and oxygen, especially from water or another electrolyte based on aqueous solution, having a photoelectric layer structureand an electrochemical layer structurein a layer construction, where&#x2014;the photoelectric layer structurefor absorption of lightuninfluenced by the electrolyteforms a front sideof the layer structure, and&#x2014;the electrochemical layer structure, for accommodation of the electrolyte, forms a reverse sideof the layer construction, and&#x2014;a conductive and corrosion-inhibiting coupling layerforms electrical contact between the photoelectric layer structureand the electrochemical layer structurein the layer construction, where&#x2014;the electrochemical layer structurehas an electrode structure of a front electrodeand an electrode structure of a rear electrode, between which is arranged an ion exchange layersuch that an integrated layer constructionis formed with the ion exchange layerin contact with the electrode structure of the front electrodeformed for conversion of the electrolyteand/or with the electrode structure of the rear electrode

Photoelectrochemical cell, system and process for light-driven production of hydrogen and oxygen with a photoelectrochemical cell, and process for producing the photoelectrochemical cell

Provided is a process for producing an aldehyde from an alkylene. The process includes (a) photocatalytically dehydrogenating at least one alkane to obtain a mixture comprising at least one olefin and hydrogen, (b) adding carbon dioxide and hydrogen to the mixture, and (c) hydroformylating the olefin to at least one aldehyde. The process also includes converting carbon dioxide and hydrogen into water and carbon monoxide prior to the hydroformylating. In addition, the conversion of carbon dioxide and hydrogen into water and carbon monoxide is performed by a reverse water gas shift reaction.

Energy efficient synthesis of aliphatic aldehydes from alkenes and carbon dioxide

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Witten, Germany

Matthias Blug