For xenon atoms adsorbed in Na-A xeolite, electronic interactions cause shifts in NMR frequencies, resulting in a spectrum with discrete peaks from xenon atoms in cages with different xenon occupancies. Using two-dimensional exchange NMR, it is possible to determine the microscopic rates of intercag
Adsorption of xenon in zeolite Y: a molecular dynamics study
β Scribed by S. Yashonath
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 399 KB
- Volume
- 177
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
A molecular dynamics calculation of a realistic model of xenon adsorprion in sodium-Y zeolite is reported. The equilibrium properties such as the energy distribution function, the centre-of-cage-centre-of-mass radial distribution function, and the cageoccupancy distribution function are obtained. The results are in reasonable agreement with those of earlier calculations. The dynamics is significantly slower than that observed for other small organic molecules. Xenon exhibits anisotropic motion in the large cavity.
π SIMILAR VOLUMES
Molecular dynamics calculations have been used to investigate theeffect of temperature on the mobility of methane in faujasite. At room temperature, methane molecules reside mostly in the vicinity of the supercage walls. Migration between supercages of the zeolite structure occurs predominantly via
Molecular dynamics calculations on xenon adsorbed in the cubic cavity of cloverite, a gallophosphate, is presented. Guest-host radial distribution functions, guest-host energy distribution functions, power spectra, and diffusion coefficients for xenon are reported at 397, 494, and \(716 \mathrm{~K}\