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 language | English |
|---|---|
| Pages (from-to) | 2114-2122 |
| Number of pages | 9 |
| Journal | AICHE Journal |
| Volume | 53 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - 2007 Aug |
| Externally published | Yes |
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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 journal › Article
}
TY - JOUR
T1 - Hydrothermal synthesis of mesoporous materials from diatomaceous earth
AU - Jing, Zhenzi
AU - Maeda, Hirotaka
AU - Ioku, Koji
AU - Ishida, Emile H.
PY - 2007/8
Y1 - 2007/8
N2 - 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.
AB - 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.
KW - Diatomaceous earth
KW - Hydrothermal synthesis
KW - Mesoporous materials
KW - Pore distribution
KW - Tensile strength
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UR - http://www.scopus.com/inward/citedby.url?scp=34547676171&partnerID=8YFLogxK
U2 - 10.1002/aic.11235
DO - 10.1002/aic.11235
M3 - Article
VL - 53
SP - 2114
EP - 2122
JO - AICHE Journal
JF - AICHE Journal
SN - 0001-1541
IS - 8
ER -