About the influence of lattice vibrations on the diffusion of methane in a cation-free LTA zeolite

被引:61
作者
Fritzsche, S
Wolfsberg, M
Haberlandt, R
Demontis, P
Suffritti, GB
Tilocca, A
机构
[1] Univ Leipzig, Fak Phys & Geowissensch, D-04103 Leipzig, Germany
[2] Univ Calif Irvine, Inst Surface & Interface Sci, Irvine, CA 92697 USA
[3] Univ Sassari, Dipartimento Chim, I-07100 Sassari, Italy
关键词
D O I
10.1016/S0009-2614(98)01060-4
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The influence of lattice vibrations on the diffusion of methane in st cation-free zeolite of structure Type LTA is examined. It is shown that contrary to earlier published results the self-diffusion coefficients obtained with flexible and with rigid lattices are practically the same. This finding is true over a wide range of temperatures and for different interaction parameters. The reason why earlier papers did not state this independence of D on the lattice vibrations is explained. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:253 / 258
页数:6
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