应用化学2019，Vol.36Issue(1)：51-57,7.DOI:10.11944/j.issn.1000-0518.2019.01.180069
以短链季铵盐/脂肪酸盐为模板合成超微孔二氧化硅
Synthesis of Ordered Supermicroporous Silica Using Short-Chain Quaternary Ammonium/Fatty Acid Salts as Template
摘要
Abstract
Supermicroporous materials possess pore size of 1～2 nm.They are expected to exhibit size-and shape-based separation/catalytic applications, which plays important role in modern industry.It is challenging to find an economic/simple surfactant system for the synthesis of supermicroporous materials.In this work, supermicroporous silica was synthesized using short-chain quaternary ammonium salt (decyltrimethyl ammonium bromide, denoted C10TAB) surfactant system mixed with fatty acid salts as the templating agents.The samples were characterized by small-angle X-ray diffraction (XRD) , N2 adsorption-desorption, Fourier transform infrared spectroscopy (FTIR) , scanning electron microscopy (SEM) and transmission electron microscopy (TEM) .The results indicate that the length of alkyl chain in co-surfactant, the dosage amount, crystallization temperature have great effects on the regularity of the pore structure.We can obtain highly ordered supermicroporous silica when using sodium octanoate (denoted SO) as co-surfactant in the molar ratio of n (C10TAB) ∶n (Na2SiO3) ∶n (SO) ∶n (H2O) =1∶1.5∶0.3∶800, at the crystallization temperature of 80℃.The calcinated materials possess surface area 1300 m2/g and pore volume 0.49 cm3/g with a pore size distribution centered at about 1.90 nm.关键词
超微孔二氧化硅/短链季铵盐/脂肪酸盐/胶束/混合表面活性剂Key words
supermicroporous silcia/short-chain quaternary ammonium salt/fatty acid salts/micellar/mixed surfactants system分类
化学化工引用本文复制引用
王仁亮,朱延美,冀海伟..以短链季铵盐/脂肪酸盐为模板合成超微孔二氧化硅[J].应用化学,2019,36(1):51-57,7.基金项目
胶体与界面化学教育部重点实验室 (山东大学) 开放课题 (201407) （山东大学）
泰山医学院高层次课题培育计划 (2015GCC19) （2015GCC19）
山东省高等学校科技计划项目 (J17KB072) 资助 （J17KB072）
