Appeal 2007-0121
Application 10/324,594
The appealed claims are directed to a sorbent composition comprising
perlite, zinc oxide and a promoter metal component; a method of making
such a sorbent composition; and a desulfurized fluid obtained by contacting
a sulfur-containing fluid with a reduced sorbent. The preparation method
involves separation and crushing steps in order to obtain selectively crushed
expanded perlite particles. The obtained expanded perlite particles are
combined with zinc oxide and a promoter metal to form an unreduced
sorbent. Claims 1, 18 and 39 are illustrative and reproduced below:
1. A method of making a sorbent composition, said method
comprising the steps of:
(a) separating an initial quantity of uncrushed expanded perlite
particles into a large particle portion and a small particle portion;
(b) crushing said small particle portion to obtain selectively
crushed perlite particles having a mean particle size less than the
mean particle size of said small particle portion; and
(c) combining said selectively crushed perlite particles with zinc
oxide and a promoter metal to form an unreduced sorbent.
18. A sorbent composition comprising:
perlite;
zinc oxide; and
a reduced-valence promoter metal component,
wherein said perlite has a mean particle size in the range of from
about 2 to about 40 microns, wherein less than about 10 weight
percent of said perlite has a particle size greater than 75
microns.
2
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