Method for preparing sulfonated organic porous material
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United States of America Patent
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Oct 10, 2006
Grant Date -
May 6, 2004
app pub date -
Sep 2, 2003
filing date -
Sep 13, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A sulfonated organic porous material in which at least 0.5 mg-equivalent/g (on a dry basis) of sulfonic acid groups has been introduced can be obtained by causing a gaseous substance containing sulfuric anhydride to come in contact with an organic porous material having mesopores existing on the walls of interconnected macropores and having a median radius of 0.01 100 .mu.m and a total pore volume of 1 50 ml/g. This preparation method can ensure the introduction of a large amount of sulfonic acid groups into an organic porous material in a short period of time.
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