Sud-chemie Ag

Volkswagen Ag

Sud-chemie Aktingesellschaft

Sud Chemie Aktiengesellschuft

Michael Schneider

Karl Kochloefl

Gerd J Maletz

Karel Kochloefl

Hans J Wernicke

Ortwin Bock

Jurgen Ladebeck

Friedrich Schmidt

Bernd Ludewig

Ralf Mayer

Jürgen R Ladebeck

Gotz Burgfels

Götz Burgfels

Josef Schönlinner

Franz Maier

Axel Konig

Helge Neuner

Heiko Schröder

Joscha Roth

Daniel Dias

Gerhardt Maletz

Sebastian Thomschke

Gerhard Maletz

Christoph Heinisch

Gerhard Diez

Josef E Rauch

Wolfgang Liebelt

Hans-Jürgen Wernicke

Carl-Ernst Hofstadt

Joachim Pohl

Karl-Werner Ellinger

Kurt Korbel

Heiko SCHRÖDER

A device for producing an output light emission having a light source for emitting light and a first polarizing beam splitter element positioned so at least one portion of the emitted light is incident thereupon, wherein a first reflected light beam of a first polarization state and a second transmitted light beam of a second polarization state are produced. The device also includes a first liquid crystal element having at least two states which are actuated using a control unit. The first liquid crystal element at least partially reflects the first light beam, wherein the polarization state of the first light beam is altered based on the state of the first liquid crystal element. The first polarizing beam splitter element is positioned so the first light beam is incident thereupon after reflection at the first liquid crystal element.

Device and method for producing an output light emission, and headlight

A catalyst is described based on crystalline aluminosilicates of the pentasil type, characterized in that it is constructed from primary crystallites with an average diameter of at least 0.01 &#x3bc;m and less than 0.1 &#x3bc;m, that are combined to at least 20% to agglomerates of 5 to 500 &#x3bc;m, in which the primary crystallites or agglomerates are bonded together by finely divided aluminum oxide, that its BET surface is 300 to 600 m/g and its pore volume (determined according to mercury porosimetry) is 0.3 to 0.8 cm/g, that it is present in H form and that the amount of finely divided aluminum oxide binder is 10 to 40 wt. %, referred to the total weight of the aluminosilicate, in which the finely divided aluminum oxide binder is used in the reaction charge as peptizable aluminum oxide hydrate, sodium aluminate being used as aluminum and alkali source, and primary synthesis of the crystalline aluminosilicate occurs without addition of acid. A method is also described for production of such a catalyst and its preferred applications.

Catalysts based on crystalline aluminosilicate

The invention relates to a catalyst for conversion of carbon monoxide with steam into hydrogen, carbon dioxide and hydrogen-rich synthesis gases. The conversion can be done at temperatures above roughly 300.degree. C. In addition, a chromium-free catalyst for the aforementioned purpose is described which contains the following in 'application form:'

Chromium-free catalyst based on iron oxide for conversion of carbon

A molded catalyst body that contains in a reduced state a metal of the ferrous group and/or copper on a support and is characterized by the following features:

Molded catalyst body

The invention describes a chromium-free catalyst for hydrogenation of organic compounds, especially organic compounds containing the carbonyl function, such as aldehydes, ketones, or carboxylic acids or their esters, to the corresponding alcohols wherein the catalysts is characterized by the following features:

Chromium-free catalyst for the hydrogenation of organic compounds

A catalyst for the conversion of carbon monoxide which before reductive activation, has the chemical composition which corresponds to the formula

Copper oxide-aluminum oxide-magnesium oxide catalysts for conversion of

A catalyst for the hydrogenation of carboxylic acid alkyl esters to higher alcohols which in the oxide form comprises a chemical composition represented by the formula

Catalyst and process for hydrogenation of carboxylic acid alkyl esters

An SiO.sub.2 -containing copper oxide-chromium oxide catalyst is obtained through heat treatment of copper oxide and chromium oxide, or of a precursor compound convertible into copper oxide or chromium oxide in the presence of an SiO.sub.2 component; it is characterized by the fact that, after the heat treatment,

SiO.sub.2 -containing cooper oxide-chromium oxide catalyst for the

Acid-resistant copper oxide-chromium oxide catalysts for hydrogenation of fatty acids or fatty acid mixtures and/or the esters thereof are obtained through heat treatment of copper oxide and chromium oxide or of precursor compounds that are convertible into copper oxide or chromium oxide and which contain aluminum zirconium, cerium and/or lanthanum oxide as an additional metal component. The acid resistance is defined by the fact that the amount of copper which is dissolved by stirring 10 g of the catalyst for 2 minutes in 100 ml of 10 weight percent acetic acid at 20.degree. C., is a maximum of 200 mg.

Acid-resistant copper oxide-chromium oxide catalyst for the

A catalyst based on crystalline aluminosilicates of the pentasil type, having an Si/Al atomic ratio of at least 10, has the structure of primary crystallites of a mean diameter of at least 0.1 micron and at most 0.9 micron, which crystallites are partially combined into agglomerates the primary crystallites and/or agglomerates being mutually joined by finely disperse alumina obtainable by hydrolysis of aluminum-organic compounds, the BET surface area of the catalyst being 300 to 600 m.sup.2 /g and its pore volume (determined by mercury porosimetry) being 0.3 to 0.8 cm.sup.3 /g.

Catalyst based on crystalline aluminosilicate

A catalyst for the selective hydrogenation of polyunsaturated hydrocarbons which contain entirely or predominantly more than five carbon atoms, containing palladium with a promotor on a metal oxide support. The promotor is a metal from the subgroup IB of the periodic system (preferably silver) and the metal oxide support (TiO.sub.2 optionally mixed with CeO.sub.2 and/or ZrO.sub.2) is macroporous, the pore volume being about 0.2 to 0.4, preferably about 0.25 to 0.30 ml per g of carrier and the proportion of the macropores having a diameter of more than 14 nm being at least 65%.

Catalyst for the selective hydrogenation of polyunsaturated hydrocarbons

A process for decreasing the content of nitrogen oxides in flue gases. The process comprising contacting the flue gases with a catalyst. The catalyst contains at least one of the metals titanium, zirconium, vanadium, tungsten, molybdenum, or cerium in the form of one or more of their oxides combined with a silicate with a layer structure (layer silicate) comprising acid-activated kaolin. The crystalline layer structure of the acid-activated kaolin is essentially retained, while being not yet X-ray amorphous. The acid activation increases the BET surface area at least 15% and preferably at least 50% in terms of the BET surface area of the kaolin before acid activation. The atomic ratio of the silicon in the acid-activated kaolin to the metal in the oxide is from 0.2 and 50 and preferably from 0.4 to 25.

Process for decreasing the content of nitrogen oxides in flue gases

A ferruginous catalyst for decreasing the content of nitrogen oxide in flue gases. The catalyst comprising an active constituent in the form of a combination of a compound of iron and of an acid aluminosilicate that has a layered structure.

Ferruginous catalyst for decreasing the content of nitrogen oxides in

A catalyst for the production of synthesis gas or hydrogen from aqueous methanol by dissociation or steam reforming. The catalyst contains:

Catalyst for the production of synthesis gas or hydrogen and process for

A catalyst for decreasing the content of nitrogen oxides in flue gases. The catalyst contains at least one of the metals titanium, zirconium, vanadium, tungsten, molybdenum, or cerium in the form of one or more of their oxides combined with a silicate with a three-layer structure (three-layer silicate) selected from the group consisting of illite and mica. The atomic ratio of the silicon in the three-layer silicate to the metal in the oxide is from 0.2 and 50 and preferably from 0.4 to 25.

Growing community of inventors

Ottobrunn-Riemerling, Germany

Michael Schneider