Vanadium phosphorus oxygen oxidation catalysts useful for preparing anhydrides from alkanes
AssigneePetro-Tex Chemical Corporation
InventorRalph O. Kerr
Life of this patent
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Abstract
A catalyst complex useful for the partial oxidation of alkanes to the corresponding anhydrides, e. g., converting normal C.sub.4 hydrocarbons to maleic anhydride in vapor phase, comprising as components vanadium, phosphorus, oxygen, Nb, Cu, Mo, Ni, Co and Cr. Preferred are those compositions containing in additiion one or more of Ce, Nd, Ba, Hf, U, Ru, Re, Li or Mg.
Claims12
A catalyst composition for use in the partial oxidation to C.sub.4 to C.sub.10 alkane hydrocarbons to anhydrides consisting of vanadium, phosphorus, oxygen and a modifying component consisting of the elements Nb, Cu, Mo, Ni, Co and Cr or the elements Nb, Cu, Mo, Ni, Co and Cr and one or more of the elements selected from the group of Ce, Nd, Ba, Hf, U, Ru, Re, Li, or Mg, wherein the atomic ratio of vanadium:phosphorus:modifying component is 1:0.90 to 1.3:0.005 to 0.4, respectively.
A catalyst composition for use in the partial oxidation of C.sub.4 to C.sub.10 alkane hydrocarbons to anhydrides consisting of vanadium, phosphorus and oxygen and a modifying component of Nb, Cu, Mo, Ni, Co, Ce, Nd, Cr, Ba and Hf or Nb, Cu, Mo, Ni, Co, Ce, Nd, Cr and Ba, wherein the atomic ratio of vanadium:phosphorus:modifying component is 1:0.90 to 1.3:0.005 to 0.4, respectively.
A catalyst composition for use in the partial oxidation of C.sub.4 to C.sub.10 alkane hydrocarbons to anhydrides consisting of vanadium, phosphorus and oxygen and a modifying component of Nb, Cu, Mo, Ni, Co and Cr and (1) one or more of the elements selected from the group consisting of Ce, Nd, Ba, Hf, Ru, Re, Li and Mg or (2) U and one or more of the elements selected from the group consisting of Ce, Nd, Ba, Hf, Ru, Re, Li and Mg, wherein the atomic ratio of vanadium:phosphorus:modifying component is 1:0.90 to 1.3:0.005 to 0.4, respectively.
Dependencies are inferred from the claim text.