Silica microspheres from rice husk: A good opportunity for chromatography stationary phase

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Publication date: 1 October 2018
Source:Industrial Crops and Products, Volume 121

Author(s): Mostafa Shahnani, Maryam Mohebbi, Ahmad Mehdi, Alireza Ghassempour, Hassan Y. Aboul-Enein

The aim of this research is to produce spherical and porous silica particles from rice husk for chromatographic applications in HPLC columns. After complete combustion of rice husk, white powder of silica was obtained which was dissolved in NaOH and subsequently heated to produce sodium silicate solution. Spherical porous silica gel was synthesized from the prepared sodium silicate in the presence of Pluronic P123 as the surfactant, under acidic solution. Different porosities were prepared by applying various factors including different vacuums, temperatures and reaction times in order to obtain the optimum conditions for particle aging. An analytical column was packed with the prepared silica microspheres and evaluated for the separation of 10-deacetylbaccatin III and rutin from taxol and hesperidin, respectively.
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