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 silylated silica having hydrophilic sites is useful as a catalyst support and for ion exchange in chromatography.
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申请公布号 |
WO0216267(A1) |
申请公布日期 |
2002.02.28 |
申请号 |
WO2001CA01161 |
申请日期 |
2001.08.17 |
申请人 |
UNIVERSITE LAVAL;BONNEVIOT, LAURENT;BADIEI, ALIREZA;CROWTHER, NICOLAS |
发明人 |
BONNEVIOT, LAURENT;BADIEI, ALIREZA;CROWTHER, NICOLAS |
分类号 |
C01B33/12;C01B37/02;C09C1/30;(IPC1-7):C01B37/02 |
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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