Basf Aktiengesellschaft

Basf Se Corporation

Basf Magnetics Gmbh

Emtec Magnetics Gmbh

Basf Aktiengellsellschaft

The Dow Chemical Company

Reinhard Körner

Ekkehard Schwab

Frank Funke

Thomas Hill

Johann-Peter Melder

Klaus Ebel

Frank Rosowski

Klaus Harth

Markus Schubert

Christian Walsdorff

Wilhelm Ruppel

Till Gerlach

Gerald Vorberg

Signe Unverricht

Götz-Peter Schindler

Jürgen Zühlke

Michael Baier

Erhard Henkes

Hermann Petersen

Wilma M Dausch

Ronald J Veitch

Michael Krämer

Hans-Georg Göbbel

Lisa Lobree

Walter Himmel

Peter Poganiuch

Thomas Lautensack

Emil Pfannebecker

Bernd Hoppner

Michael Bajer

Werner Wimbersky

Michael KRÄMER

The invention relates to a catalyst for the oxidation of SOto SO. The catalyst contains an active substance which contains vanadium, alkali metal compounds and sulfate applied to a support. The support contains naturally occurring diatomaceous earth, wherein the support contains at least one relatively soft naturally occurring uncalcined diatomaceous earth which has a percentage reduction of at least 35% in its Dvalue determined in a particle size determination according to the dry method in comparison with the wet method.

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Iron oxides are upgraded by calcining at from 700 to 1200&#xb0; C.

Iron oxides with a higher degree of refining

The present invention relates to a process for the preparation of iron-doped ruthenium catalysts supported on carbon, and their use for the selective liquid phase hydrogenation of carbonyl compounds to give the corresponding alcohols, in particular for the hydrogenation of citral to give geraniol or nerol or of citronellal to give citronellol.

Preparation of ruthenium/iron catalysts supported on carbon

In a process for preparing 3-aminomethyl-3,5,5-trimethylcyclohexylamine (isophoronediamine, IPDA) having a cis/trans isomer ratio of at least 70/30 from 3-cyano-3,5,5-trimethylcyclohexanone (isophoronenitrile, IPN), NHand H, the hydrogenation is carried out at from 50 to 200&#xb0; C. and a pressure of from 50 to 300 bar in the presence of a hydrogenation catalyst having an alkali metal content of &#x2266;0.03% by weight, calculated as alkali metal oxide referring to the total weight of the catalyst. The alkali metal content is made up of the contents of Li, Na, K, Rb and Cs; in particular, the alkali metal content is the Na content. A process for producing hydrogenation catalysts having an alkali metal content (in particular a sodium content) of &#x2266;0.03% by weight, calculated as alkali metal oxide/sodium oxide referring to the total weight of the catalyst, and the hydrogenation catalysts themselves are also provided by the invention.

Method for the production of isophorondiamine (ipda,3-aminomethyl-3,5,5-trimethylcyclohexylamine)

Ferromagnetic pigments

Acicular cobalt-containing magnetic iron oxides having a high coercive force and a core/shell structure and hence low temperature dependence of the coercive force are prepared by a process in which, in a first stage, surface activation is effected by means of iron(II) and cobalt ions under alkaline conditions on the iron oxide core under an inert gas atmosphere and thereafter, in a second stage, an epitactic coating of cobalt ferrite is applied, which coating is formed oxidatively from iron (II) and cobalt (II) hydroxide, likewise under alkaline reaction conditions. The total amount of cobalt ions used for doping remains unchanged compared with the known doped iron oxides or is even smaller. In the second process stage, the achievable coercive force can be controlled by the proportion of air in the gas mixture during the formation of the epitactic coating.

Preparation of acicular cobalt-containing magnetic iron oxide

Growing community of inventors

Frankenthal, Germany

Reinhard Körner