Method for the prevention of post oxidation of methacrolein

C - Chemistry – Metallurgy – 07 – C

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260/565.1

C07C 45/86 (2006.01) B01J 8/06 (2006.01) C07C 45/35 (2006.01) C07C 45/37 (2006.01) C07C 45/38 (2006.01) C07C 47/22 (2006.01)

Patent

CA 1313679

ABSTRACT This invention provides a method for the prevention of oxidation of resulting methacrolein immediately after its discharge from a reaction tube upon production of the methacrolein by vapor-phase oxidation of isobutylene, tertiary butanol or methallyl alcohol with a molecular-oxygen-containing gas in the presence of a catalyst. An inert gas and/or recirculated reaction gas or a mixed gas of an inert gas and/or recirculated reaction gas and air is fed and mixed with a reaction product gas immediately after an outlet of the reaction tube.

572505

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