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CN107469797B 一种二巯基丁二酸改性多孔磁性复合微球的制备方法 失效 - 权利终止

一种二巯基丁二酸改性多孔磁性复合微球的制备方法
摘要：
本发明公开了一种二巯基丁二酸改性多孔磁性复合微球的制备方法，其特征在于，首先，将脱脂棉和淀粉溶解于1‑乙基‑3‑甲基咪唑磷酸二乙酯盐，添加纳米铁酸锌，制备得到氨基化多孔磁性复合微球；然后，采用γ－氨丙基三甲氧基硅烷将多孔磁性复合微球表面氨基化，得到氨基化磁性多孔棉复合微球；最后，在反应器中，按如下组成加入，甲醇：62~68%，二巯基丁二酸：15~20%，搅拌溶解，氨基化多孔磁性复合微球：15~20%，于60±2℃恒温、搅拌、反应3h，冷却后，固液分离，干燥，得到二巯基丁二酸改性多孔磁性复合微球。该吸附剂对铅、汞具有很高的吸附容量，既成本低又绿色环保，机械强度高，可反复使用10次以上，吸附剂容易分离。
摘要（英）：

The invention discloses a preparation method of dimercaptosuccinic-acid modified porous magnetic composite microspheres. The preparation method is characterized by comprising the following steps: firstly dissolving degreasing cotton and starch in 1-ethyl-3-methylimidazole diethyl phosphate, and adding nano zinc ferrite to prepare and obtain aminated porous magnetic composite microspheres; and then adopting gamma-aminopropyltrimethoxysilane to aminate the surfaces of the porous magnetic composite microspheres so as to obtain aminated porous cotton magnetic composite microspheres; finally adding the following components in percent by weight, namely 62-68% of methanol and 15-20% of dimercaptosuccinic acid, into a reactor, stirring for dissolving, adding 15-20% of aminated porous magnetic composite microspheres, stirring at a constant temperature of 60+/-2 DEG C, stirring, reacting for 3 hours, cooling, carrying out solid-liquid separation, and drying to obtain the dimercaptosuccinic-acid modified porous magnetic composite microspheres. The dimercaptosuccinic-acid modified porous magnetic composite microspheres have high absorbing capacity for lead and mercury, is low in cost, is environment-friendly, can be repeatedly used for more than 10 times due to high mechanical strength, and is easy in separation.

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