Experimental calibration of the reduced partition function ratios of tetrahedrally coordinated silicon from the Debye–Waller factors

Zhang, Dongzhou; Chen, Ming; Dera, Przemysław; Eng, Peter J.

doi:10.1007/s00410-021-01820-6

Cited by 3 publications

(1 citation statement)

References 81 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Each diffraction image covers a φ angle range of 0.5°, resulting in a total of 680 collected diffraction images for post analysis 36 . High purity nitrogen gas was introduced from the bottom of a double-walled alumina tube heater, passed over the tungsten coiled wire heating element, and covered the capillary in hot gas 37 . Resistive heating was achieved upon power supply up to ~ 275 W. A type-K thermocouple at the tube exit, positioned a few millimeters from the sample was used to measure the gas temperature.…”

Section: Methodsmentioning

confidence: 99%

Dehydration kinetics of nanoconfined water in beryl probed by high temperature single crystal synchrotron X-ray diffraction

Nguyen,

Zhang,

et al. 2024

Sci Rep

Self Cite

View full text Add to dashboard Cite

Understanding changes in material properties through external stimuli plays a key role in validating the expected performance of materials and engineering material properties in a controlled manner. Here, we introduce a fundamental protocol to deduce dehydration reactions kinetics of water confined in nanopore channels, with the cyclosilicate beryl as the scaffold of interest, using time-resolved synchrotron X-ray diffraction (SXRD), in the temperature interval of 298–1038 K. The temperature-dependent intensity $$(I)$$ ( I ) of the strongest reflection (112) was used as the crystallite variable. An estimation of an isobaric thermal crystallite coefficient, $$k$$ k , analogous with the isobaric thermal expansion coefficient, established the rate of relative crystallization as a function of temperature, $$\frac{\partial I}{\partial T}$$ ∂ I ∂ T . A plot of $$lnk$$ lnk and $$\frac{1}{T}$$ 1 T gives rise to two kinetic steps, indicating a slow dehydration stage up to ~ 700 K and a fast dehydration stage up to the investigated temperature 1038 K. The crystal structure of beryl determined up to 1038 K, in temperature increment as small as 10 K, indicates the presence of channel ions Na and Fe and a gradual decrease of water upon heating.

show abstract

Section: Methodsmentioning

confidence: 99%