Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Silicon containing or process of making
Reexamination Certificate
2005-05-03
2005-05-03
Bos, Steven (Department: 1754)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Silicon containing or process of making
C502S236000, C502S237000, C502S239000
Reexamination Certificate
active
06887822
ABSTRACT:
A method for making a silica supported catalyst involves impregnating a silica component with a catalytic metal using an aqueous, alkaline bath before drying. More specifically, the method involves forming and washing a silica component, such as a silica gel or a co-gel, for example a silica-zirconia co-gel. Then, the washed silica component is contacted with the alkaline bath to effect the impregnation with the catalytic metal, such as cesium, to form an activated silica component. Subsequently, the activated silica component is dried to form the catalyst. The resulting catalysts demonstrate good mechanical strength.
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Sultanov et al., “Preparation of a strengthened aluminosilicate catalyst from industrial spherodial silica gel,” USSR Katal. Pererab. Uglevodorod. Syria (1971), No. 5 91-104. From Ref.Zh., Khim. 1972, Abstr. No. 24L142. Journal written in Russian. CAN 78:164644 AN1973:164644 CAPLUS [Copyright 2001 ACS].
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Bos Steven
PQ Corporation
RatnerPrestia
Wright, Sr. William G.
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