Method for preparing carboxylic acids

摘要

The present invention relates to a heterogeneous catalyst for preparing carboxylic acids, the catalyst comprising nanoparticles which comprise a support containing a magnetic core and a shell of an inorganic oxide layer, wherein at least one organic or inorganic metal salt and an imide compound are deposited in and/or on the inorganic oxide layer; as well as to a method for preparing carboxylic acids utilizing that heterogeneous catalyst.