Purification of acrolein from an oxidation product gas comprises stabilizing the acrolein with copper and/or copper salts during absorption and/or distillation

摘要

Purification of acrolein from a gas mixture produced by catalytic gas-phase oxidation of propane, propene, propanol and/or their precursors, by absorbing the acrolein from the cooled gas mixture with water and distilling the absorbate, comprises stabilizing the acrolein with copper and/or copper salts during absorption and/or distillation.