Compositions – Preservative agents – Anti-corrosion
Patent
1992-07-10
1999-01-19
Niebling, John
Compositions
Preservative agents
Anti-corrosion
423335, 423338, G01J 1300
Patent
active
058611100
ABSTRACT:
A method for production of high specific surface area silica gel by hydrolysis of silicon tetrahalide, wherein a solution of silicon tetrahalide in a non-reactive solvent such as alcohol is mixed with water to produce silica gel having a high surface area and narrow pore diameter distribution especially suited for use as normal phase packing material in high performance chromatography columns. The water contains fluoride ions if the halide is chloride. Reverse phase packing material can be prepared by reacting the normal phase silica gel with organochlorosilanes to prepare bonded reverse phase material for use in high performance liquid chromotagraphy systems.
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Brame Deborah J.
Chieng Paul C.
Chu Alexander H. T.
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