Verfahren zur Herstellung von Acrylsäure oder Methacrylsäure durch Gasphasenoxidation von Propan oder Isobutan

摘要

The invention relates to a method for the production of acrylic acid or methacrylic acid, wherein propane or isobutane a reacted with molecular oxygen in the gas phase in a fluidized bed reactor containing a catalyst, wherein the catalyst contains a multi-metal oxide comprising a molybdenum, tellurium and/or antimony, vanadium and niobium. A catalyst activator containing at least one tellurium compound is added during the reaction.