Appeal No. 1997-1536
Application 08/342,817
through 51).
Matviya discloses stable, catalytically-active high
temperature carbonaceous char capable of rapidly decomposing
hydrogen peroxide in aqueous solutions (column 1, lines 5
through 8). The chars are prepared from an inexpensive and
abundant nitrogen-poor feedstock such as bituminous coal or a
bituminous coal-like carbonaceous material (column 2, lines 43
through 57). The feedstock material is pulverized and mixed if
necessary with a small amount of a suitable binder and then
extensively oxidized at temperatures less than 700EC until
additional gains in catalytic activity are no longer evident
(column 2, lines 58 through 65). The oxidized low temperature
char is then exposed to a nitrogen-containing compound such as
urea during the initial calcination, preferably between 850EC
and 950EC in the presence of the nitrogen-containing compound
and preferably under an inert gas (column 3, lines 1 through
18). The calcined char is then cooled in an oxygen-free or
inert atmosphere to a temperature less than 400EC (column 3,
lies 19 through 29).
Hayden discloses a process for the production of a
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