Catalysts for gas phase oxidations
AssigneeBASF SE
InventorsSamuel Neto, Jurgen Zuhlke, Sebastian Storck, Frank Rosowski
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Abstract
A catalyst for gas-phase oxidations which comprises an inert support and a catalytically active composition comprising transition metal oxides applied thereto, or a precatalyst, is described. The (pre)catalyst is obtained by treating the inert support with an aqueous suspension or solution of the transition metal oxides or their precursor compounds, where the suspension contains a binder dispersion and the binder is a copolymer of an α-olefin and a vinyl-C2-C4-carboxylate whose vinyl C2-C4-carboxylate content is at least 62 mol %.
Claims17
A catalyst for gas-phase oxidations prepared by a process comprising contacting a support with an aqueous suspension or solution comprising a transition metal oxides composition or their precursor compounds, wherein the suspension or solution contains a binder dispersion consisting essentially of a copolymer of an α-olefin and a vinyl-C2-C4-carboxylate whose vinyl C2-C4-carboxylate content is at least 62 mol %.
A precatalyst comprising transition metal oxides attached to a support with a binder, wherein the binder consists essentially of a copolymer of an α-olefin and a vinyl-C2-C4-carboxylate, wherein the vinyl C2-C4-carboxylate content is at least 62 mol %.
A binder composition in combination with transition metal oxides, the binder composition consisting essentially of a copolymer of an α-olefin and a vinyl-C2-C4-carboxylate, wherein the vinyl C2-C4-carboxylate content is at least 62 mol %.
Dependencies are inferred from the claim text.