Evonik Degussa Gmbh

Novartis Ag

Evonik Oxeno Gmbh

Nicole Brausch

Guido Stochniol

Martin Trocha

Peter Wasserscheid

Stephan Wieber

Jörg Sauer

Robert Franke

Dirk Fridag

Hartwig Rauleder

Horst-Werner Zanthoff

Franz-Felix Kuppinger

Alexey Merkulov

Juergen Steiger

Juergen Erwin Lang

Arne Hoppe

Thomas Quandt

Andreas Sabbagh

Matthias Patz

Andrea Christiansen

Goetz Baumgarten

Dorit Wolf

Marc Becker

Imad Moussallem

Olivier Zehnacker

Udo Knippenberg

Jürgen Erwin Lang

Jutta Hessing

Bernhard Stuetzel

Harald Stüger

Jürgen Steiger

André Ebbers

Michael Coelle

Janette Klatt

Thorsten Schwärtzke

Dennis Fruehling

Michael Jakuttis

Jens Haubrock

Thorsten Schwaertzke

Marco Haumann

Sebastian Werner

Andreas Schoenweiz

Joerg Zoellner

Yuecel Oenal

Dennis Fruhling

Markus Weber

Oliver Becker

Götz Baumgarten

Yücel Önal

Bernhard Stützel

Andreas Metlen

Jörg Zöllner

Thomas Tacke

Thomas Haas

Dennis FRÜHLING

A controlled preparation of octachlorotrisilane and higher polychlorosilane such as DCTS and DCPS from monomeric chlorosilane, proceeds by exposing the chlorosilane to a nonthermal plasma and recycling chlorosilane that has not been converted to octachlorotrisilane into the plasma.

Process for preparing octachlorotrisilane and higher polychlorosilanes with utilization of hexachlorodisilane

The present invention provides a composition comprising: a) an inert porous support material, b) an ionic liquid, c) a metal selected from group 9 of the Periodic Table of the Elements, d) a phosphorus-containing organic ligand, e) at least one organic amine. The present invention further provides a process for hydroformylating olefin-containing hydrocarbon mixtures to aldehydes with addition of the inventive composition as a catalytically active composition, wherein: a) the water content of the olefin-containing hydrocarbon mixture is adjusted to not more than 20 ppm, b) the content of polyunsaturated compounds in the olefin-containing hydrocarbon mixture is adjusted to not more than 3000 ppm, c) a molar ratio of organic amines according to claims-to phosphorus-containing organic ligands according to claims-of at least 4:1 is established, d) a molar ratio of phosphorus-containing organic ligands according to claims-to rhodium of at least 10:1 is established.

Use of supported ionic liquid phase (SILP) catalyst systems in the hydroformylation of olefin-containing mixtures to aldehyde mixtures with a high content of aldehydes unbranched in the 2 position

The present invention relates to a process for preparing hydridosilanes from halosilanes, in which a) i) at least one halosilane of the generic formula SiX(where n&#x2267;3 and X=F, Cl, Br and/or I) and ii) at least one catalyst are converted to form a mixture comprising at least one halosilane of the generic formula SiX(where m&#x3e;n and X=F, Cl, Br and/or I) and SiX(where X=F, Cl, Br and/or I), and b) the at least one halosilane of the generic formula SiXis hydrogenated to form a hydridosilane of the generic formula SiH, the hydridosilane of the generic formula SiHis separated from partially halogenated hydridosilanes of the general formula SiHX(where 1&#x3c;y&#x3c;2m+1), and the separated partially halogenated hydridosilanes of the general formula SiHX(where 1&#x3c;y&#x3c;2m+1) are hydrogenated again.

Process for preparing hydridosilanes

The present invention relates to a method for oligomerizing hydridosilanes, wherein a composition comprising substantially at least one non-cyclic hydridosilane having a maximum of 20 silicon atoms as the hydridosilane is thermally converted at temperatures below 235&#xb0; C. in the absence of a catalyst, the oligomers that can be produced according to the method, and the use thereof.

Method for oligomerizing hydridosilanes, the oligomers that can be produced by means of the method, and the use thereof

The present invention relates to a process for purifying low molecular weight hydridosilane solutions, in which a solution to be purified comprising a) at least one low molecular weight hydridosilane, b) at least one solvent and c) at least one impurity selected from the group of the compounds having at least 20 silicon atoms and/or the group of the homogeneous catalyst systems is subjected to a crossflow membrane process with at least one membrane separation step using a permeation membrane.

Process for purifying low molecular weight hydridosilanes

The present invention relates to a process for preparing unsaturated aldehydes or unsaturated carboxylic acids by heterogeneous catalytic gas phase oxidation of unsaturated or saturated hydrocarbons, comprising the process steps of: i) providing a gas mixture comprising a saturated hydrocarbon and catalytically dehydrogenating the saturated hydrocarbon in the gas phase to obtain a gas mixture comprising an unsaturated hydrocarbon in a dehydrogenation reactor having a dehydrogenation catalyst material; or ii) providing a gas mixture comprising oxygen and an unsaturated hydrocarbon; iii) catalytically oxidizing the unsaturated hydrocarbon obtained in process step i) or provided in process step ii) in the gas phase to obtain a gas mixture comprising an unsaturated aldehyde in a first oxidation reactor having a first oxidation catalyst material; wherein at least one of the reactors selected from the dehydrogenation reactor, the first oxidation reactor and the second oxidation reactor comprises at least one foam body.

Use of foam bodies in oxidation reactors for preparing unsaturated aldehydes or carboxylic acids

Process for preparing higher hydridosilanes of the general formula H&#x2014;(SiH)&#x2014;H where n&#x2267;2, in which&#x2014;one or more lower hydridosilanes&#x2014;hydrogen, and&#x2014;one or more transition metal compounds comprising elements of transition group VIII of the Periodic Table and the lanthanides are reacted at a pressure of more than 5 bar absolute, subsequently depressurized and the higher hydridosilanes are separated off from the reaction mixture obtained.

Process for preparing higher hydridosilanes

The invention relates to a method for producing higher hydridosilane wherein at least one lower hydridosilane and at least one heterogeneous catalyst are brought to reaction, wherein the at least one catalyst comprises Cu, Ni, Cr and/or Co applied to a carrier and/or oxide of Cu, Ni, Cr and/or Co applied to a carrier, the hydridosilane that can be produced according to said method and use thereof.

The present invention relates to a process for the preparation of indium(III) halodialkoxides of the generic formula InX(OR)where X=F, Cl, Br, I and R=alkyl radical, alkoxyalkyl radical, in which a composition (A) comprising an indium trihalide InX, where X=F, Cl, Br and/or I, and at least one alcohol of the generic formula ROH, where R=alkyl radical, alkyloxyalkyl radical, is reacted with a composition (B) comprising at least one secondary amine of the generic formula R'NH, where R&#x2032;=alkyl radical, to the indium(III) halodialkoxides which can be prepared by the process and to their use.

Process for the preparation of indium chlordialkoxides

Ionic liquids comprising a mixture of one or more triflate or bis(trifluoromethylsulfonyl)imide salt(s) with one or more Lewis acids(s), wherein the total of the molar contents of the Lewis acid(s) in the mixture is from about 0.01-98%, are provided, that are useful as catalysts in Lewis acid catalyzed reactions.

Mixtures of ionic liquids with lewis acids

Growing community of inventors

Essen, Germany

Nicole Brausch