Verfahren der heterogen katalysierten Gasphasenoxidation von Propan zu Acrolein und/oder Acrylsäure

摘要

The invention relates to a method for carrying out the heterogeneously catalyzed gas phase oxidation of propane into acrolein and/or acrylic acid in which the initial mixture of reaction gas is fed over a fixed-bed catalyst which is comprised of catalyst charges A, B arranged in two reaction zones A, B that are placed in a spatially successive manner, whereby the temperature of reaction zones A, B are kept at different temperatures.