硅胶
材料科学
吸附
催化作用
热稳定性
离子液体
化学工程
傅里叶变换红外光谱
溶胶凝胶
多孔性
打赌理论
热重分析
基质(化学分析)
异构化
吸附
有机化学
化学
复合材料
纳米技术
工程类
作者
Rohit L. Vekariya,Abhishek Dhar,Jignesh Lunagariya
标识
DOI:10.1080/09276440.2017.1277889
摘要
Imidazolium-based metal and halogen-free Brönsted acidic ionic liquid (BAIL) (3,3′-(hexane-1,6-diyl)bis(2-methyl-1-(3-sulfopropyl)-1H-benzimidazolium) hydrogensulfate [HbMBIM-PS][HSO4] was synthesized. The physicochemical properties of this BAIL were investigated using a variety of different analytical and spectroscopic techniques such as 1H and13C-NMR, FT-IR, mass, UV–vis and TGA spectra. A porous silica matrix has been synthesized using BAIL and tetraethoxysilane (TEOS) as silica source by nonhydrolytic sol–gel method. The properties of IL confined silica gel matrix have been studied using FTIR, TGA, SEM, N2-sorption measurement (BET characterization for determining pore parameters), and NH3-TPD techniques. From the N2-sorption measurement, it has been found that BET surface area decreased while pore volume, average pore size and porosity decreased. The thermal stability of the IL has been found to increase upon confinement in silica gel matrix. The results suggested that IL had been successfully confined on silica gel. This IL confined silica gel catalyst is environment friendly and useful for alkane isomerization and esterification reactions.
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