Synthesis and Characterization of Bimodal Mesoporous Silica Derived from Rice Husk Ash

  • Chanyarak Watthanachai Chulalongkorn University
  • Chawalit Ngamcharussrivichai Chulalongkorn University
  • Somchai Pengprecha Chulalongkorn University


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Bimodal mesoporous silica (BMS) was obtained by synthesizing a silica derived from rice husk ash (RHA) with the structure-directing agents (Pluronic P123 and CTAB) using the sol-gel technique. RHA from biomass power plant was extracted with NaOH. The characteristic of BMS, UMS-P123, UMS-CTAB and RHS were performed with XRD, FT-IR, XRF, N2 adsorption-desorption isotherm, SEM and TEM techniques. As the result, BMS with large mesopore were obtained from the material like SBA-15 which are the dominant characteristic of Pluronic P123, and incorporated of CTAB, which the small mesopore were original from the parent templates. BMS shows higher specific surface area (>700 m2/g) pore volume (1.30 cm3/g) and pore size (9.20 nm) than the unimodal mesoporous silica (UMS-P123 and UMS-CTAB). Therefore, BMS synthesized from rice husk ash had the excellent material that could find the applications in adsorbent and also gave environmental benefits and renewable resource.

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Author Biographies
Chanyarak Watthanachai

Interdisciplinary Program in Environmental Science, Graduate School, Chulalongkorn University, Bangkok 10330, Thailand

Chawalit Ngamcharussrivichai

Center of Excellence on Catalysis for Bioenergy and Renewable Chemicals (CBRC), Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand

Somchai Pengprecha

Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand

Vol 23 No 1, Jan 31, 2019
How to Cite
C. Watthanachai, C. Ngamcharussrivichai, and S. Pengprecha, “Synthesis and Characterization of Bimodal Mesoporous Silica Derived from Rice Husk Ash”, Eng. J., vol. 23, no. 1, pp. 25-34, Jan. 2019.

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