Studiengesellschaft Kohle Mbh

H2 Solar Gmbh

Martin Demuth

Kurt Schaffner

Alfred E Ritter

Andrij Kuklya

Klaus Kerpen

Peter Ritterskamp

The invention relates to a method for the photoelectrochemical production of hydrogen and oxygen and for the simultaneously or separately conducted photoelectrical/photovoltaic production of electricity, characterized in that water is brought into contact with silicides, while applying light at the same time, or the contact with water can be foregone if electricity is produced exclusively. The invention enables the production of hydrogen and oxygen in a simple way directly from water, wherein the use of UV light and cost-intensive catalysts can be foregone.

Silicides for photoelectrochemical water splitting and/or the production of electricity

In a process for photochemical and thermochemical generation of hydrogen and/or oxygen, water is contacted with at least one Si-containing compound selected from silicides, silicide-like compositions, and oxides of the silicides and silicide-like compositions. The Si-containing compound is selected from metallosilicides and non-metallic silicides of the formula RSiOwherein R represents an organic, metallic, organometallic, biochemically derived and/or inorganic residue, wherein Si is silicon. The compound is preferably a silicide moiety with X&#x3e;zero.

Generation of hydrogen and oxygen from water and storage thereof with silicides

The invention relates to a method for carrying out photochemical and thermochemical solar syntheses by means of flat-bed solar light collectors without devices for focusing the sunlight. The method is particularly well suited for producing flavors, aromas and complex thereof. The flat-bed solar light collector is suitable especially for producing steroids and derivatives thereof. It can further be used for the photooxidation (photooxygenation) of terpene olefins and therefore for the synthesis of fragrants such as rose oxide, myrtenol and myrtenal which are of industrial interest. The solar collector is also suitable for photochemical addition reactions and rearrangements.

Photochemical and thermochemical solar syntheses using flat-bed solar collectors/solar reactors

Disclosed are new 1,3-dioxenones having the formulae ##STR1## in an optically pure state, a process for preparing same and the use thereof.

Optically pure 1,3-dioxenones, methods for preparing same and use thereof

New bicyclo[2.2.2]oct-5-en-2-ones of the formulae Ia and Ib in the form of pure enantiomers and processes for preparing them are described. The compounds are used for the preparation of pure enantiomers of the formula V by sensitized photoreaction or of pure enantiomers of the formula VI by unsensitized photoreaction.

Processes for the preparation of pure enantiomers of

New bicyclo[2.2.2]oct-5-en-2-ones of the formula Ia and Ib in the form of pure enantiomers and processes for preparing them are described. The compounds are used for the preparation of pure enantiomers of the formula V by sensitized photoreaction or of compounds of the formula VI by unsensitized photoreaction.

Pure enantiomers of bicyclo[2.2.2]oct-5-en-2-ones, processes for their

New bicyclo[2.2.2]oct-5-en-2-ones of the formulae Ia and Ib in the form of pure enantiomers and processes for preparing them are described. The compounds are used for the preparation of pure enantiomers of the formula V by sensitized photoreaction or of compounds of the formula VI by unsensitized photoreaction.

Growing community of inventors

Mülheim an der Ruhr, Germany

Martin Demuth