Method for the production of acrolein and / or acrylic acid.

摘要

A process for the preparation of acrolein and / or acrylic acid from propane, the process comprising the following steps: (a) dehydrogenation homogeneous and / or heterogeneous propane to propene to yield propene or a mixture A comprising propane and propene. (B) separation of propene or propane gas mixture A by absorption onto an absorbent. (C) separation of propene or propene and propane from the absorbent to give one propene or a B gas comprising propene and propane and (d) use of the gas B obtained in step (c) for an oxidation of propene to acrolein and / or acrylic acid, in which there is carried out a dehydrogenation heterogeneously catalyzed propane without a supply of oxygen between steps (c) and (d), and wherein the hydrogenation is carried out oxidatively and step ( d) takes place directly after step (c).