Ultraporous gel monoliths having predetermined pore sizes and their production
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United States of America Patent
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Jul 18, 1989
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N/A
app pub date -
Feb 25, 1985
filing date -
Feb 25, 1985
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Expired
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Abstract
A method of fabricating an ultraporous SiO.sub.2 containing gel monoliths having a predetermined mean pore size with narrow distribution of the size of the pores around the mean. A SiO.sub.2 containing sol is prepared while simultaneously controlling and preselecting the temperature, time and nature of aging solution, and drying the resultant gel to obtain an ultraporous SiO.sub.2 containing monolith having a predetermined mean pore size from about 10 .ANG. to about 400 .ANG. with narrow distribution of the size of pores around the mean and the resultant article.
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