METHOD FOR MANUFACTURING UNSATURATED ALDEHYDE AND/OR UNSATURATED CARBOXYLIC ACID

摘要

A method for partial oxidation of an alkene using a fixed bed multitube reactor to manufacture the corresponding unsaturated aldehyde and/or unsaturated carboxylic acid, wherein multiple catalyst layers, which are formed by dividing the reaction tube gas flow direction by N (N ≥ 2), are provided, and when the change (°C) in hot spot temperature per 1°C change of reaction bath temperature in a catalyst layer is (Sn), Sn ≤ 6 in at least one of the multiple catalyst layers.