期刊
PRAMANA-JOURNAL OF PHYSICS
卷 63, 期 2, 页码 449-453出版社
INDIAN ACADEMY SCIENCES
DOI: 10.1007/BF02705014
关键词
porous materials; diffusion; neutron scattering
Study of diffusivity of acetylene adsorbed in Na-Y zeolite by quasi-elastic neutron scattering (QENS) measurements at temperatures of 300, 325 and 350 K is reported. A model in which the acetylene molecules undergo random-walk diffusion characterized by a Gaussian distribution of jump lengths inside zeolite cages describes the data consistently. The diffusion constant, residence time between jumps and root mean square jump length are determined.
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