发明名称 |
Formation of hydrophilic sites in partially silylated micelle templated silica |
摘要 |
The invention relates to a method of preparing a partially silylated silica having at a surface thereof hydrophilic sites defined by non-silylated hydroxyl groups. The method of the invention comprises the steps of (a) providing a micelle templated silica having at a surface thereof surfactant-protected hydroxyl groups and unprotected hydroxyl groups; (b) treating the micelle templated silica with a base-generating silylating agent to silylate the unprotected hydroxyl groups and thereby obtain a partially silylated micelle templated silica; and (c) treating the partially silylated micelle templated silica with an acid to displace the surfactant, thereby obtaining a partially silylated silica having at the surface thereof hydrophilic sites defined by non-silylated hydroxyl groups. Such a partially silyalated silica having hydrophilic sites is useful as a catalyst support and for ion exchange in chromatography. |
申请公布号 |
AU8739301(A) |
申请公布日期 |
2002.03.04 |
申请号 |
AU20010087393 |
申请日期 |
2001.08.17 |
申请人 |
UNIVERSITE LAVAL |
发明人 |
LAURENT BONNEVIOT;ALIREZA BADIEI;NICOLAS CROWTHER |
分类号 |
C01B33/12;C01B37/02;C09C1/30 |
主分类号 |
C01B33/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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