Preparation of activated carbon-zeolite composite materials from coal fly ash

Michihiro Miyake, Yumi Kimura, Toru Ohashi, Motohide Matsuda

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Composite materials consisting of activated carbon and zeolites, which are expected to be suitable for environmental applications, were successfully prepared using coal fly ash with unburned carbon of ca. 8.0 mass% as a source material. The main components (SiO2 and Al2O3) along with unburned carbon were activated by NaOH fusion treatment at 750 °C in a N2 atmosphere, and subsequently converted into zeolites Na-X and/or Na-A with good crystallinity by hydrothermal treatment. The type of zeolite phase formed was dependent on the hydrothermal treatment conditions including NaOH concentration. In this report, the influence of preparation parameters and the presence or absence of unburned carbon on the chemical conversion of coal fly ash into composite materials consisting of activated carbon and zeolites is described.

Original languageEnglish
Pages (from-to)170-177
Number of pages8
JournalMicroporous and Mesoporous Materials
Volume112
Issue number1-3
DOIs
Publication statusPublished - Jul 1 2008

Keywords

  • Activated carbon
  • Coal fly ash
  • Fusion treatment
  • Hydrothermal treatment
  • Zeolite

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

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