引用本文:
范忠雷, 李殿卿, Edward Rosenberg. 聚烯丙基胺硅胶复合材料的合成及其吸附性能[J]. 应用化学,
2003, 20(9): 867-870.
Citation: FAN Zhong-Lei, LI Dian-Qing, Edward Rosenberg. Synthesis and Adsorption Property of Poly(allylamine)-Silica Composite[J]. Chinese Journal of Applied Chemistry, 2003, 20(9): 867-870.
Citation: FAN Zhong-Lei, LI Dian-Qing, Edward Rosenberg. Synthesis and Adsorption Property of Poly(allylamine)-Silica Composite[J]. Chinese Journal of Applied Chemistry, 2003, 20(9): 867-870.
聚烯丙基胺硅胶复合材料的合成及其吸附性能
摘要:
利用氯丙基三氯硅烷与硅胶表面羟基反应制备了烷基化硅胶(CPTCS硅胶),所得产物与聚烯丙基胺(PAA-15)反应合成了PAA-硅胶复合材料。测定了PAA-硅胶复合材料的FTIR光谱、胺基含量和润湿角,考察了溶液pH值、吸附时间和吸附温度对其吸附性能的影响,得到在25℃、pH=3.5条件下,复合材料对Cu2+的吸附容量为0.85mmol/g;当pH=4.0时,对Pb2+的吸附容量可达到0.53mmol/g。结果表明,PAA-硅胶复合材料吸附性能优良,是一处良好的吸附材料。
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关键词:
- 硅胶
- / 氯丙基三氯硅烷硅胶
- / 聚烯丙基胺硅胶复合材料
- / 吸附
English
Synthesis and Adsorption Property of Poly(allylamine)-Silica Composite
Abstract:
Poly(allylamine)-silica composite(PAA-silica composite) was synthesized by grafting chloropropyltrichloro-silane(CPTCS-silica) gel onto PAA polymer in the solution. The PAA-silica composite with amino group content of 1.75 mmol/g was obtained by reacting 75 g CPTCS-silica with 185 g PAA-15 in 100 mL methanol. The result shows that PAA-silica composite could be used as an adsorbent for metal ions, which has an adsorption capacity of 0.85 mmol/g for Cu(Ⅱ) at pH=3.5 and of 0.53 mmol/g for Pb(Ⅱ) at pH=4.0 at 25℃, respectively. The structures and properties of silica gel, CPTCS-silica and PAA-silica composites were characterized by the FTIR spectra and angles of contact.
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Key words:
- silica gel
- / CPTCS-silica
- / poly(allylamine)-silica composite
- / adsorption
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