Preparation of c3-c5.alpha., .beta.-monoethylenically...

Details Preparation of c3-c5.alpha., .beta.-monoethylenically... Preparation of c3-c5.alpha., .beta.-monoethylenically...

C - Chemistry, Metallurgy

07

C

C07C 47/22 (2006.01) B01J 35/00 (2006.01) B01J 37/02 (2006.01) C07C 45/34 (2006.01) C07C 45/35 (2006.01) C07C 51/235 (2006.01) C07C 51/25 (2006.01) C07C 57/055 (2006.01) C07C 253/26 (2006.01) C07C 255/08 (2006.01)

Patent

CA 2115973

Preparation of C3-C5 .alpha.,.beta.-Monoethylenically Unsaturated Aldehydes, Carboxylic Acids, or Nitriles Abstract of the disclosure A process for the preparation of C3-C5 .alpha.,.beta.-monoethylenically unsaturated aldehydes, carboxylic acids, or nitriles by catalytic gas phase oxidation or gasphase ammonoxidation of a reduced form of the desired compound in multiple- tube reactor charged with catalytically active multimetal oxide, in which the volume-based activity of the catalytic charge decreases along the catalyst tubes in the direction of flow abruptly, in step, and/or continuously.

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