abstract |
A process for producing acrolein or acrylic acid or mixtures thereof by heterogeneous catalytic partial gas oxidation of propylene. In this process, the starting reaction gas mixture has the following content of 6 to 9% by volume propylene, 8 to 18 vol% molecular oxygen, It has 6 to 30% by volume of propane and 32 to 72% by volume of molecular nitrogen. |