Non-hydrothermal synthesis of mesoporous materials using sodium silicate from coal fly ash

Halina Misran, S. Ramesh, M. A. Yarmo, R. A. Kamarudin

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Abstract

Siliceous mesoporous materials with pores of ordered 2-D hexagonal structure were successfully prepared without hydrothermal treatment from condensation-polymerization of various concentration of quaternary ammonium salt as structure directing agents and silica precursor from the supernatant of coal fly ash (CFA) in the presence of catalyst. The synthesized materials had high surface area of ca. 740 m2 g-1 and pore volume of ca. 0.42 mL g-1. The synthesized material exhibited a narrow size pore distribution and the mean pore diameter as measured by Dollimore-Heal method was about 2.3 nm. The formation of ammonium salt that act as precipitant during the synthesis enable the hydrolysis and co-condensation of the sodium silicate at room temperature.

Original languageEnglish
Pages (from-to)344-351
Number of pages8
JournalMaterials Chemistry and Physics
Volume101
Issue number2-3
DOIs
Publication statusPublished - 15 Feb 2007

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

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