Process for coating silica spheres

Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter

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423339, 427215, 502 8, B32B 904

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active

051962675

ABSTRACT:
Silica microspheres formed by hydrolysis of a silica precursor having a mean diameter in the range of about 0.1 to 10 .mu.m are provided with a thin surface layer, often a monolayer, of a metal to provide the appearance of a solid particle of the metal as its oxide. The microspheres are contacted with an aqueous or alcoholic solution of a metal compound to deposit the surface layer.

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patent: 4983369 (1991-01-01), Barder et al.
Anderson et al., "New Routes to Supported Bimetallic Rhodium-Tin Catalysts" Nov./1990, pp. 241-244.

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