Non-destructive X-ray Computed Tomography for Studying the Structure of Dry Water

摘要: Dry water is a powder containing up to 98% water and could be used as a novel material in a number of ways, including capture and storage of CO2. It can be prepared by mixing water with 2-6% wt hydrophobic nano particles. Dry water has been examined using various imaging techniques such as optical microscopy, SEM and TEM. 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 obtain the dry water structure and coalescence of dry water particles upon being subjected to low temperature, compression by high pressure and stirring. The results showed that dry water was stable under ambient condition for long times. Low temperature did not affect the structure effectively while high pressure …