二乙烯三胺桥联聚倍半硅氧烷的合成及其对Au(Ⅲ)的吸附性能研究  

DIETHYLENETRIAMINE BRIDGED POLYSILSESQUIOXANE ADSORPTION OF Au(Ⅲ) STUDY

作　　者：金梦[1] 晁楠楠 孙昌梅[1] 曲荣君[1] 张盈[1] 

机构地区：[1]鲁东大学化学与材料科学学院,山东烟台264025

出　　处：《离子交换与吸附》2017年第4期289-300,共12页Ion Exchange and Adsorption

基　　金：国家自然科学基金(No.51302127,51373074,51073075,51143006);山东省中青年科学家奖励基金(No.2008BS04011);山东省自然科学基金(No.2009ZRB01463,Y2007B19);烟台市科技发展计划项目(No.2013ZH350);鲁东大学科学基金(No.08-CXA001,032912,042920,LY20072902)

摘　　要：以3-氯丙基三甲氧基硅烷(CPTS)和二乙烯三胺(DETA)为原料,合成二乙烯三胺桥联单体;通过二乙烯三胺桥联单体的自凝胶及其在以十六烷基三甲基溴化铵(CTAB)为致孔剂条件下的溶胶-凝胶反应中,分别合成了两种DETA桥联聚倍半硅氧烷吸附材料。比表面及孔径分析结果表明,CTAB的加入使材料的比表面积略有增加,而累积孔体积和平均孔径则显著增大。吸附实验结果表明,两种DETA桥联聚倍半硅氧烷材料对Au(Ⅲ)表现出优异的吸附能力,静态饱和吸附量高达5~6mmol/g,吸附动力学符合拟二级模型;等温吸附符合Langmuir吸附模型。The diethylenetriamine bridge linking monomer was synthesized via the reaction between 3-chloropropyl trimethoxysilane （CPTS） and diethylenetriamine （DETA）. Two DETA bridged polysilsesquioxane adsorbent materials were prepared by Sol-gel reaction with diethylenetriamine bridge linking monomer and with cetyl trimethyl ammonium bromide （CTAB） as porogen conditions. Surface area and pore size analysis showed that the cumulative pore volume and average pore size significantly increased with slight increase of specific surface area with CTAB as porogen reagent. Adsorption experiment results showed that both DETA bridging polysilsesquioxane materials exhibited excellent adsorption capacity of Au（III） with a static adsorption capacity of Au（III） up to 5-6mmol/g and the Pseudo-second-order model adsorption kinetics, which was consistent with Langmuir adsorption isotherm model.

关 键 词：桥联聚倍半硅氧烷 吸附 二乙烯三胺 AU(III) 

分 类 号：O647.3[理学—物理化学]