Long-term operation of a heterogeneously catalyzed gas phase...

Details Long-term operation of a heterogeneously catalyzed gas phase... Long-term operation of a heterogeneously catalyzed gas phase...

2006-04-04

2006-04-04

Zucker, Paul A. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

C562S535000

Reexamination Certificate

active

07022877

ABSTRACT:
A process for the long-term operation of a heterogeneously catalyzed gas phase partial oxidation of acrolein to acrylic acid, in which the temperature of the fixed catalyst bed is increased over time and partial oxidation is interrupted and an oxygen-containing gas is conducted through the fixed catalyst bed before the temperature increase is 8° C.

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