✦ LIBER ✦

Kinetic investigation of methacrylic acid synthesis on hetropoly-compounds

✍ Scribed by Dr.-Ing. Thomas Haeberle; Prof. Dr.-Ing. Gerhard Emig

Publisher: John Wiley and Sons
Year: 1988
Tongue: English
Weight: 839 KB
Volume: 11
Category: Article
ISSN: 0930-7516
DOI: 10.1002/ceat.270110151

No coin nor oath required. For personal study only.

✦ Synopsis

Dedicated to Professor Dr. Hanns Hofmann on the occasion of his 65th birthday

The kinetics of heterogeneously catalyzed methacrylic acid synthesis from isobutyric acid has been investigated. Initial catalyst screening pointed to l0-molybdo-2-vanado-phosphoric acid and its Cs-salts as the most promising catalysts. A model describing the reaction behaviour of all the different heteropoly-compounds used in this work was developed. A relationship was found between model parameters and composition of different catalysts. First insight was gained into the catalyst deactivation phenomena. Deactivation appears to be caused mainly by loss of molybdenum with simultaneous collapse of the Keggin structure.

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