Method for continuous catalytic hydrogenation

The invention relates to the preparation of alicyclic carboxylic acids or their derivatives by selective hydrogenation of the corresponding aromatic carboxylic acid (derivatives) in at least two series-connected reactors, at least one reactor being operated in loop operating mode. The catalyst volum...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KAIZIK ALFRED, GRASS MICHAEL, REEKEN BURKHARD, TUCHLENSKI AXEL
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:The invention relates to the preparation of alicyclic carboxylic acids or their derivatives by selective hydrogenation of the corresponding aromatic carboxylic acid (derivatives) in at least two series-connected reactors, at least one reactor being operated in loop operating mode. The catalyst volumes in the method are set in such a manner that the catalyst volume required, based on the conversion rate, is as low as possible.