| abstract |
"PROCESSES FOR THE CATALYTIC OXIDATION IN GASEOUS PHASE OF ACROELINE PROPENE AND FOR THE PREPARATION OF ACRYLIC ACID". The invention relates to a process for the gas catalytic oxidation of propene to acrolein in which the initial reaction gas mixture, with a propylene charge <242> 160 N1 / 1.h, is fed over a bed catalyst fixed that is accommodated in two reaction zones A, B arranged in a spatially successive manner, with the temperature of reaction zone B being maintained at a higher temperature than that of reaction zone A. |