Heterogeneously catalyzed partial gas phase oxidation of...

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

2006-01-03

2006-01-03

Richter, Johann (Department: 1621)

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

Organic compounds

Carboxylic acids and salts thereof

C562S532000, C562S531000

Reexamination Certificate

active

06982347

ABSTRACT:
In a process for partially oxidizing acrolein to acrylic acid in the gas phase under heterogeneous catalysis, the starting reaction gas mixture is oxidized at an acrolein loading of ≦145 and ≧70 l (STP) of acrolein/l of fixed catalyst bed·h over a fixed catalyst bed which is accommodated in two successive reaction zones A, B, the highest temperature of the reaction gas mixture within reaction zone A being above the highest temperature of the reaction gas mixture within reaction zone B.

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