Method for preparing sulfonated organic porous material
AssigneeOrgano Corporation
InventorsHiroshi Inoue, Koji Yamanaka, Akiko Yoshida, Yusaku Suenaga
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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 μm 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.
Claims20
A method for preparing a sulfonated organic porous material comprising 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 μm and a total pore volume of 1–50 mug to obtain an organic porous material in which 2.7–5.0 mg-equivalent/g (on a dry basis) of sulfonic acid groups has been introduced.
Dependencies are inferred from the claim text.