Inventor
WIRTH FRIEDRICH
11 patents
Patents
11 patentsUS4282116AAug 4, 1981
Supported catalyst containing vanadium and titanium and/or zirconium for the preparation of phthalic anhydride
BASF AG25 citations81
US4077984AMar 7, 1978
Manufacture of phthalic anhydride from o-xylene or naphthalene
BASF AG25 citations80
US4036783AJul 19, 1977
Supported catalyst containing vanadium and titanium
BASF AG22 citations80
US4568427AFeb 4, 1986
Continuous isolation of phthalic anhydride and maleic anhydride from reaction gases
BASF AG15 citations72
US4324694AApr 13, 1982
Supported catalysts containing vanadium pentoxide, titanium dioxide, phosphorus, rubidium and/or cesium, with or without zirconium dioxide
BASF AG11 citations72
US4096094AJun 20, 1978
Supported catalysts containing vanadium pentoxide and titanium dioxide
BASF AG15 citations72
US4007136AFeb 8, 1977
Supported catalyst for the oxidation of o-xylene and/or naphthalene to phthalic anhydride
BASF AG7 citations71
US4008255AFeb 15, 1977
Recovery of phthalic anhydride
BASF AG14 citations68
US4411818AOct 25, 1983
Reactivation of vanadium-containing oxidation catalysts
BASF AG5 citations61
US4489775ADec 25, 1984
Desublimator for isolating sublimation products from reaction gases
BASF AG2 citations60
US4369327AJan 18, 1983
Preparation of phthalic anhydride
BASF AG3 citations57