Non-destructive high-resolution X-ray micro computed tomography for quantifying dry water particles

Farhang, Faezeh, Nguyen, Tuan D. and Nguyen, Anh V. (2014) Non-destructive high-resolution X-ray micro computed tomography for quantifying dry water particles. Advanced Powder Technology, 25 4: 1195-1204. doi:10.1016/j.apt.2014.06.006


Author Farhang, Faezeh
Nguyen, Tuan D.
Nguyen, Anh V.
Title Non-destructive high-resolution X-ray micro computed tomography for quantifying dry water particles
Journal name Advanced Powder Technology   Check publisher's open access policy
ISSN 0921-8831
1568-5527
Publication date 2014-07
Year available 2014
Sub-type Fully published paper
DOI 10.1016/j.apt.2014.06.006
Open Access Status
Volume 25
Issue 4
Start page 1195
End page 1204
Total pages 10
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2015
Language eng
Subject 2211 Mechanics of Materials
1500 Chemical Engineering
Abstract Dry water, a powder containing up to 98%wt. water and 2-6%wt. hydrophobic nanoparticles, is a novel material for novel applications like CO2 capture, transportation and storage in the form of clathrate hydrates. In this study, novel high-resolution X-ray micro computed tomography (HRXMT) was used as an in situ, non-destructive tool to visually and quantitatively examine the inner structure of dry water that has not been accessible previously. Specifically, the HRXMT was used to study the effect of silica/water wt. ratio on the number, surface area and volume distributions of dry water. The results showed that dry water was stable under ambient condition for long time. The technique was also successful in characterizing the structure changes in dry water after exposing to low temperature, high pressure and stirring. Low temperature did not affect the structure significantly, while high pressure and slow stirring broke the structure fairly readily with separation of dry water into the primary solid and liquid phases. These findings are useful to our understanding of the role of dry water in promoting the formation of CO2 and gas hydrates.
Keyword XCT
Hydrophobic fumed silica
Surface area distribution
Volume distribution
Hydrate
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Fully published paper
Collections: School of Chemical Engineering Publications
Official 2015 Collection
 
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