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

M. Halina, S. Ramesh, Mohd. Ambar Yarmo, R. A. Kamarudin

Research output: Contribution to journalArticle

46 Citations (Scopus)

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

Fingerprint

Coal Ash
sodium silicates
fly ash
Mesoporous materials
Coal
Ammonium Compounds
Fly ash
coal
Silicates
Salts
Sodium
porosity
synthesis
Polycondensation
Silicon Dioxide
Pore size
Condensation
Hydrolysis
condensation
Silica

Keywords

  • Coal fly ash
  • Mesoporous silica
  • Room temperature synthesis

ASJC Scopus subject areas

  • Materials Chemistry

Cite this

Non-hydrothermal synthesis of mesoporous materials using sodium silicate from coal fly ash. / Halina, M.; Ramesh, S.; Yarmo, Mohd. Ambar; Kamarudin, R. A.

In: Materials Chemistry and Physics, Vol. 101, No. 2-3, 15.02.2007, p. 344-351.

Research output: Contribution to journalArticle

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