Symrise Gmbh & Co Kg

Uhde Gmbh

Bayer Materialscience Ag

Thomas Turek

Matthias Brandt

Ingo Wöhrle

Peter Esser

Aurélia Reckziegel

Meinhard Schwefer

Stephan Klein

Rainer Maurer

Peter Lehner

Markus Kögel

Susanne Buchholz

Stephen Klein

A method and device for removal of NO in nitric acid production are disclosed. The device is arranged after a heat exchanger, post ammonia burning, before the absorption tower and contains a catalyst, which essentially comprises one or several iron loaded zeolites.

Removal of laughing gas in nitric acid production

A process is described for reducing the NOconcentration and NO concentration from the residual gas from nitric acid production. The process encompasses the passing of the residual gas leaving the absorption column, prior to entry into the residual gas turbine, through a combination of two stages. The first stage here reduces the NOcontent and the second stage the NO content of the gas, the NO/NO ratio prior to entry of the gas into the second stage being in the range from 0.001 to 0.5, and this gas being brought into contact in the second stage with a catalyst which is substantially composed of one or more iron-loaded zeolites.

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The invention describes a process for the production of aromatic amines by the catalytic hydrogenation of aromatic nitro compounds, with the process being characterized by at least one catalytic hydrogenation step and the catalyst consists at least of a monolithic support and a catalytically active coating.

Process for the production of aromatic amines by heterogeneously catalysed hydrogenation

The present invention relates to supported catalysts based on ReO/(&#x2014;AlOfor use in the preparation of cycloalkadienes in a metathesis reaction, a process for preparing cycloalkadienes in the presence of these supported catalysts and also the use of the resulting cycloalkadienes for preparing fragrances.

Metathesis catalysts

The present invention relates to a process for preparing cycloalkadienes using supported catalysts based on ReO/&#x3b3;-AlOand also to the use of the resulting cycloalkadienes for the preparation of fragrances.

Process for preparing cycloalkadienes

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Düsseldorf, Germany

Thomas Turek