Hydrothermal synthesis of mesoporous materials from diatomaceous earth

Zhenzi Jing, Hirotaka Maeda, Koji Ioku, Emile H. Ishida

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

Hydrothermal synthesis of mesoporous materials from diatomaceous earth has been carried out under saturated steam pressure (0.2-1.56 MPa) at 393-473 K for up to 72 h by slaked lime introduction. During the hydrothermal synthesis process, calcium silicate hydrate (CSH) was among the first phase formed and invariably appeared before tobermorite. The CSH formation seemed to exert a positive effect on the strength development and pore size evolution initially; whilst the tobermorite formation appeared to further enhance the strength and narrow the pore size. With curing at 473 K for 18 h, both of the strength and pore size distribution tended to reach optimal at which the pore size distribution also ranges between mesoporous area (2-50 nm in diameter). The highest strength seemed to coincide with the finest pore size distribution of the synthesized porous material during hydrothermal processing in this study.

Original languageEnglish
Pages (from-to)2114-2122
Number of pages9
JournalAICHE Journal
Volume53
Issue number8
DOIs
Publication statusPublished - 2007 Aug
Externally publishedYes

Fingerprint

Silicic Acid
Diatomaceous Earth
Mesoporous materials
Hydrothermal synthesis
Pore size
Earth (planet)
Steam
Calcium silicate
Hydrates
Pressure
Hydrated lime
Curing
Porous materials
calcium silicate
tobermorite
Processing
lime
K-18 conjugate

Keywords

  • Diatomaceous earth
  • Hydrothermal synthesis
  • Mesoporous materials
  • Pore distribution
  • Tensile strength

ASJC Scopus subject areas

  • Biotechnology
  • Chemical Engineering(all)
  • Mechanical Engineering
  • Environmental Engineering
  • Polymers and Plastics

Cite this

Hydrothermal synthesis of mesoporous materials from diatomaceous earth. / Jing, Zhenzi; Maeda, Hirotaka; Ioku, Koji; Ishida, Emile H.

In: AICHE Journal, Vol. 53, No. 8, 08.2007, p. 2114-2122.

Research output: Contribution to journalArticle

Jing, Zhenzi ; Maeda, Hirotaka ; Ioku, Koji ; Ishida, Emile H. / Hydrothermal synthesis of mesoporous materials from diatomaceous earth. In: AICHE Journal. 2007 ; Vol. 53, No. 8. pp. 2114-2122.
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