Heterogeneously catalyzed partial gas phase oxidation of...

Details Heterogeneously catalyzed partial gas phase oxidation of... Heterogeneously catalyzed partial gas phase oxidation of...

2007-01-02

2007-01-02

Zucker, Paul A. (Department: 1621)

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

Organic compounds

Carboxylic acids and salts thereof

Reexamination Certificate

active

10803897

ABSTRACT:
In a process for heterogeneously catalyzed partial gas phase oxidation of acrolein to acrylic acid, the starting reaction gas mixture is oxidized over a fixed catalyst bed 1 which consists of at least two fixed catalyst bed zones and is accommodated in two successive temperature zones A, B, and the transition from temperature zone A to temperature zone B does not coincide with a transition from one fixed catalyst bed zone to another fixed catalyst bed zone.

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