Appeal No. 2000-0073
Application No. 08/883,716
wherein M equals Sn, Ti, Fe, Cu, Nb, Ta, Co, Ni, Mg,
Li, Na, Ga and mixtures thereof,
a is from about 0.5 to about 5.0,
b is from about 0.1 to 5.0, and
x is the number of oxygen atoms required to
satisfy the valency requirement of the other
elements.
comprising (1) mixing the vanadium compound, at least a portion of the
antimony compound, and at least a portion of the M compound and an
aqueous sol containing a portion of the support material to form an aqueous
slurry, heating the slurry to remove the water, and calcining at a temperature
of at least about 150°C to form a catalyst precursor; (2) mixing the catalyst
precursor with an aqueous sol containing the remaining portion of the
support for the catalyst and any remaining portion of the Sb compound and M
compound to form a second slurry; (3) drying the second slurry to remove
the water to form a dry mixture; and (4) calcining the dried mixture at a
temperature of at least 150°C to form the finished catalyst.
As evidence of unpatentability of the claimed subject matter, the Examiner relies on
the following references:
Brazdil et al. (Brazdil ‘016) 5,214,016 May 25, 1993
Brazdil et al. (Brazdil ‘588) 5,498,588 Mar. 12, 1996
-3-
Page: Previous 1 2 3 4 5 6 7 8 Next
Last modified: November 3, 2007