Compositions: ceramic – Ceramic compositions – Pore-forming
Patent
1988-08-08
1989-05-02
Lieberman, Allan M.
Compositions: ceramic
Ceramic compositions
Pore-forming
501 68, 502263, 502407, 502 80, 423131, C04B 3804
Patent
active
048267902
ABSTRACT:
A particulate porous material suitable for use as a high surface area column packing material comprises particles substantially all of which are not smaller than 5 micrometers and not larger than 1 millimeter in diameter, and each particle is in the form of a substantially cellular body and consists predominantly of an open, three-dimensional matrix of crystals of mullite which define between them interconnecting pores having a width in the range of from 5 nanometers to about 2 micrometers. The particles can be coated with a reactive layer. There is also disclosed a process for producing the particulate porous material wherein a particulate product comprising particles substantially all of which are between 5 micrometers and 1 millimeter in diameter and consisting predominantly of a mixture of mullite crystals and silica is treated with a concentrated aqueous solution of an alkali metal hydroxide at a temperature of at least 50.degree. C.; and the treated particulate product is then washed, dewatered and dried. The particulate porous material may be used as a packing material for a chromatographic or ion exchange column, or for performing biochemical separations, and is particularly useful for immobilizing biological components such as biological macromolecules or biological cells.
REFERENCES:
patent: 2536122 (1951-01-01), Bertorelli et al.
patent: 2939764 (1960-06-01), Schoenfelder et al.
patent: 4601997 (1986-07-01), Speronello et al.
patent: 4628042 (1986-12-01), Speronello et al.
Gould Caryl
Jones Thomas R.
ECC International Limited
Lieberman Allan M.
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