Process for the preparation of a micro-meso porous material with a high surface area and controlled distribution of the porosity
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United States of America Patent
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Jun 6, 2000
Grant Date -
N/A
app pub date -
May 30, 1997
filing date -
Jun 13, 1996
priority date (Note) -
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Abstract
The present invention relates to a process for the preparation of a micro-meso porous material which comprises: a) preparing a mixture starting from a tetraalkylorthosilicate, a C.sub.3 -C.sub.6 alkyl alcohol or dialcohol, a tetraalkylammonium hydroxide having the formula R.sub.1 (R.sub.2).sub.3 N--OH wherein R.sub.1 is a C.sub.3 -C.sub.7 alkyl and R.sub.2 is a C.sub.1 or C.sub.3 -C.sub.7 alkyl, optionally in the presence of one or more metal compounds, in which the molar ratios are within the following ranges: alcohol/SiO.sub.2
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