发明名称 |
Silica adsorbent on magnetic substrate |
摘要 |
Adsorbent particles comprising superparamagnetic and/or low Curie Temperature transition metal-containing cores surrounded by a hydrous siliceous oxide coating can be formed by an aqueous process wherein the core is precipitated from an aqueous solution and a siliceous oxide coating is deposited thereon while complete drying of the core is avoided until after the siliceous oxide is deposited. The resulting siliceous adsorbents exhibit strong superparamagnetic and/or low Curie temperature magnetic properties with low transition metal leachability. |
申请公布号 |
US6296937(B2) |
申请公布日期 |
2001.10.02 |
申请号 |
US20010756149 |
申请日期 |
2001.01.08 |
申请人 |
W. R. GRACE & CO.-CONN. |
发明人 |
PRYOR JAMES NEIL;CRUMP LINDA LEE |
分类号 |
B01D15/00;B01J20/10;B01J20/28;B01J20/32;G01N33/543;(IPC1-7):B32B5/16 |
主分类号 |
B01D15/00 |
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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