Appeal No. 1997-3632 Page 2
Application No. 08/248,565
claims 2-4 and 16 stand or fall with claim 17, the sole
independent claim on appeal. See page 4 of the brief. Claim
17 is reproduced below.
17. A process for treating a charge
hydrocarbon characterized by an initial boiling
point of from about 70EF to 700EF, and
containing undesired nitrogen and sulfur which
comprises maintaining a bed of sulfided carbon-
supported catalyst containing:
(i) at least one metal selected from
10-40 wt% tungsten or 5-18wt% molybdenum; and
(ii) 3-12 wt% of a non-noble Group VIII
metal; and
(iii)1-10 wt% chromium,
(iv) wherein the metals are loaded onto the
carbon support from aqueous solutions of salts
of the elements, and
(v) wherein the carbon support has a B.E.T.
surface area in the range of 600 m /g to 20002
m /g, a total pore volume for nitrogen of at2
least 0.4 cc/g, and an average pore diameter by
nitrogen absorption, defined as Average Pore
Diameter (Angstroms):
= 40,000 X Pore Volume for Nitrogen in
cc/g.
Nitrogen BET Surface Area in m /g.2
of between 16 and 50 Angstroms,
passing said charge hydrocarbon in the
presence of hydrogen, at a hydrogen feed rate of
200-5000 SCFB into contact with said sulfided
catalyst defined above at hydrotreating
conditions, including a temperature of 570EF-
720EF and a pressure of 400-1500 psig, thereby
effecting hydrodenitrogenation and
hydrodesulfurization of said charge hydrocarbon
containing undesired nitrogen and sulfur and
forming a product stream of hydrocarbon
containing a lesser quantity of undesired
nitrogen and sulfur, and recovering said product
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