Catalyst – solid sorbent – or support therefor: product or process – Solid sorbent – Organic
Patent
1988-09-22
1990-08-21
Konopka, Paul E.
Catalyst, solid sorbent, or support therefor: product or process
Solid sorbent
Organic
55386, 2101982, 2101983, 210656, 427387, 428405, B01J 2032, B01J 2022, B01D 1508, B32B 514
Patent
active
049506358
ABSTRACT:
Dual zone porous materials having an external zone and an internal zone are prepared by contacting a suspension of a porous support, such as particulate silica, in a solvent with a halosilane and a catalyst for the halosilane in order to form first silyl groups predominantly on the external surfaces of the porous support. Preferably thereafter the porous support is contacted with a silane having second silyl groups in order to a form second silyl groups predominantly on the internal surfaces.
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Tangney Thomas J.
Williams Dwight E.
Dow Corning Corporation
Konopka Paul E.
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