Use of coated catalysts for the hydrogenation of maleic anhydride to give tetrahydrofuran and gamma-butyrolactone.

摘要

Tetrahydrofuran and gamma-butyrolactone are prepared from at least, maleic anhydride or succinic by hydrogenating catalytically maleic anhydride vaporous or anhydride succinic vaporous in the presence of hydrogen in contact with a catalyst comprising a support essentially inert, AL LESS partially porous, having an outer surface and a catalytically active oxide material, coating ON THE OUTER SURFACE OF SUPPORT THAT JOINS STRONGLY SUPPORT WHERE THE MATERIAL OXIDE catalytically active oxides UNDERSTANDS MIXED COPPER AND ALUMINUM ICZN.