Low temperature oxydehydrogenation of ethane to ethylene
AssigneeUnion Carbide Corporation
InventorsFrank G. Young, Erlind M. Thorsteinson
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Abstract
Ethane is catalytically oxydehydrogenated to ethylene in a gas phase reaction, in the presence or absence of water, at temperatures of .ltoreq.550.degree. C. using a catalyst comprising oxides of the elements Mo.sub.a X.sub.b Y.sub.c wherein X=Cr, Mn, Nb, Ta, Ti, V and/or W, Y=Bi, Ce, Co, Cu, Fe, K, Mg, Ni, P, Pb, Sb, Si, Sn, Tl and/or U, a=1, b=0 to 2, c=0 to 2, with the proviso that the total value of c for Co, Ni and and/or Fe is <0.5. Acetic acid is also produced.
Claims16
A low temperature process for converting ethane to ethylene which comprises catalytically oxydehydrogenating ethane exothermically at a temperature of 450.degree. C. or less in the gas phase in which the catalyst is a calcined composition containing the elements of Mo, X, and Y in the ratio:
- Mo.sub.a X.sub.b Y.sub.c
- wherein X is at least one of the groups V, Nb and Mn;
- V and W;
- V and Mn;
- or W and Nb.
- Y is selected from the group consisting of Bi, Ce, Co, Cu, Fe, K, Mg, Ni, P, Pb, Sb, Si, Sn, Tl and/or U,
- a is 1
- b is 0.05 to 1
- c is 0 to 2
- with the proviso that the total value of c for Fe, Co and/or Ni is less than 0.5.
A process for the catalytic oxydehydrogenation of ethane to ethylene exothermically in the gas phase at a temperature of 550.degree. C. or less by contacting the ethane under such conditions with a calcined catalyst comprising Mo, V, Nb and one additional element of the group Cu, Ce, Mn and U.
A process for the catalytic oxydehydrogenation of ethane to ethylene exothermically in the gas phase at a temperature of 550.degree. C. or less by contacting the ethane under such conditions with a calcined catalyst comprising Mo, V, Nb and K.
Dependencies are inferred from the claim text.