Hydrothermal synthesis of mesoporous materials from diatomaceous earth

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

研究成果: Article査読

34 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)2114-2122
ページ数9
ジャーナルAIChE Journal
53
8
DOI
出版ステータスPublished - 2007 8月
外部発表はい

ASJC Scopus subject areas

  • バイオテクノロジー
  • 環境工学
  • 化学工学(全般)

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