METHOD FOR GAS PHASE OXIDATION USING A MODERATOR LAYER

METHOD FOR GAS PHASE OXIDATION USING A MODERATOR LAYER

Method for gas phase oxidation comprises directing a gaseous flow comprising at least an aromatic hydrocarbon and molecular oxygen through at least two catalyst layers that are arranged in current direction, where the activity of the catalyst in the border of the catalyst layer is different from one...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: WILMER, HAGEN, ALLMANN, HANS-MARTIN, LAUTENSACK, THOMAS
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Beschreibung
Zusammenfassung:Method for gas phase oxidation comprises directing a gaseous flow comprising at least an aromatic hydrocarbon and molecular oxygen through at least two catalyst layers that are arranged in current direction, where the activity of the catalyst in the border of the catalyst layer is different from one another, and arranging a moderator layer between two catalyst layers that are arranged one behind the other in the flow direction of the gaseous flow. Method for gas phase oxidation comprises directing a gaseous flow comprising at least an aromatic hydrocarbon and molecular oxygen through at least two catalyst layers that are arranged in current direction, where the activity of the catalyst in the border of the catalyst layer is different from one another, and arranging a moderator layer between two catalyst layers that are arranged one behind the other in the flow direction of the gaseous flow, where the moderator layer is catalytically less active than the catalysts adjoining upstream and downstream or is catalytically inactive; and the highly active catalyst layer is situated downstream to the moderator layer as the catalyst layer upstream to the moderator layer.