The reactor and process for the catalytic gas-phase reaction, as well as a process for the application of a catalyst in a reactor

摘要

Reactor (1) comprising a plurality of reaction channels (2), the at least partially with a catalyst (3) are provided, in which at least two reaction channels (2) a over a length (4) of the reaction channels (2) have different course of a catalytic concentration. Furthermore, a process for the application of a catalyst (3) in a plurality of reaction channels (2) of a reactor (1), a process for the catalytic gas-phase reaction, a device for the production of (meth) acrylic acid, as well as a process for the preparation of highly pure (meth) acrylic acid is proposed.