Heterogenically catalysed gas-phase partial oxidation method...

Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide

Reexamination Certificate

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Details

C502S248000, C502S255000, C502S305000, C502S312000, C502S313000, C502S314000, C502S316000, C502S318000, C502S321000

Reexamination Certificate

active

07129195

ABSTRACT:
The invention relates to a method for the heterogenically catalyed gas-phase partial oxidation of precursor compounds of (meth)acrylic acid in a fixed catalyst bed, containing as the catalyst an activated mass of mixed oxide, shaped to form a geometric body. Said geometric body is a geometric base body, into whose surface a cavity is incorporated.

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