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Author(s): |
Yingmei Xu, Key Laboratory of Biotechnology and Bioresources Utilization , The State Ethnic Affairs Commission-Ministry of Education School of Biological Science of Dalian Nationalities University, Dalian 116600, China
Qi Ji, Key Laboratory of Biotechnology and Bioresources Utilization , The State Ethnic Affairs Commission-Ministry of Education School of Biological Science of Dalian Nationalities University, Dalian 116600, China
Jiawei Shi, School of Chemical Engineering of Dalian University of Technology, Dalian 116012, China
Demin He, School of Chemical Engineering of Dalian University of Technology, Dalian 116013, China
Dongmei Wang, School of Chemical Engineering of Dalian University of Technology, Dalian 116014, China
Jun Guan, School of Chemical Engineering of Dalian University of Technology, Dalian 116015, China
Qiumin Zhang, School of Chemical Engineering of Dalian University of Technology, Dalian 116016, China |
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Abstract: |
The oil shale residues from oil production were taken as raw material and cationic surfactant as modifier, the hydroxyl groups on the aggregated silica surface were alkylated directly. The structure of alkylated Si-hydroxyl on modified silica surface was characterized by means of infrared spectroscopy, nuclear magnetic resonance analysis, thermal gravimetric analysis and scanning electron microscopy analysis. The results showed that the modified silica was obtained and modification rate of surface hydroxyl groups is about 84%.The modification conditions were optimized on the base of the application of orthogonal experimental method, and the optimum parameters are that the reaction temperature is 40℃, pH value is within the range of 9-10 and the molar ratio of cationic surfactant to silica surface hydroxyl is 2:1.
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