Bayer Aktiengesellschaft

Lanxess Deutschland Gmbh

Klaus Rohbock

Andreas Schlegel

Jürgen Kischkewitz

Peter Bailly

Peter Woditsch

Gunter Linde

Manfred Eitel

Jurgen Kischkewitz

Bernd Krockert

Reinhard Thiel

Rudolf Wiemers

Kurt Schafer

The present invention relates to a filtration unit containing pellets or granules of fine-particle iron oxides and/or iron oxyhydroxides with a large specific surface area, processes for their production and processes for their use in the filtration units.

Adsorption vessels

The present invention relates to pellets or granules based on iron oxides and/or iron oxyhydroxides and iron(III) hydroxide, a unit suitable for the through-flow of a fluid medium at least partially filled with an adsorbent/catalyst in pellet form consisting essentially of iron oxide and/or iron oxyhydroxide embedded in an iron hydroxide matrix, processes for their production comprising filtering, drying and shaping steps and their processes of their use.

Contact and adsorbent granules

Colored building materials are produced by incorporating into the building materials inorganic pigments in the form of granulates which are free-flowing and not dust forming wherein the pigments are produced from spray dried granulates by after-granulating.

Process for coloring building materials

A process for regenerating a deactivated oxidation catalyst, especially one containing vanadium oxide, wherein the deactivated catalyst is treated with an aqueous solution of ammonia and/or an amine at an elevated temperature so as to dissolve at least a portion of the catalyst and the resultant solution or suspension is treated in a known manner to obtain the reactivated catalyst.

Process for regenerating spent vanadium oxide containing oxidation

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Kempen, Germany

Klaus Rohbock