Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Metal – metal oxide or metal hydroxide
Reexamination Certificate
2003-12-05
2008-03-25
Nguyen, Cam N. (Department: 1754)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Metal, metal oxide or metal hydroxide
C502S258000, C502S260000, C502S263000, C502S328000, C502S332000, C502S336000, C502S338000, C502S341000, C502S349000, C502S350000, C502S351000, C502S355000, C502S407000, C502S414000, C502S415000, C502S439000
Reexamination Certificate
active
07348293
ABSTRACT:
A homogeneous, amorphous catalyst support comprising a modifying-metal-oxide and a base-metal oxide, the catalyst support having a Surface to Bulk modifying-metal/base-metal atomic ratio of from about 0.6 to about 1.3 and exhibiting an X-ray diffraction having broader line width and lower intensity than is exhibited by the base-metal oxide is disclosed. More specifically, a homogeneous, amorphous silica-modified-alumina catalyst support useful in the Fischer-Tropsch process is disclosed. A silica-modified-Alumina catalyst support of the present invention maintains the desirable properties of alumina and exhibits higher resistance to acid than unmodified alumina.
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Chevron U.S.A. Inc.
Nguyen Cam N.
Roth Steven H.
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