Transport diffusion of argon in AlPO4-5 from equilibrium molecular dynamics simulations

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Hoogenboom, J.P. and Tepper, H.L. and Vegt, N.F.A. van der and Briels, W.J. (2000) Transport diffusion of argon in AlPO4-5 from equilibrium molecular dynamics simulations. Journal of Chemical Physics, 113 (16). pp. 6875-6881. ISSN 0021-9606

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Abstract:Transport diffusion of argon in the unidirectional channels of the molecular sieve AlPO4-5 has been studied using molecular dynamics simulations. Using the Green–Kubo formalism, this nonequilibrium property is, for the first time, extracted from just one equilibrium simulation. Apart from the computational advantages above nonequilibrium simulations, the new method also provides a way to check the validity of the assumption of linear response, which is at the basis of both methods. The transport diffusion coefficient for argon at 87 K and half the maximum loading is found to be equal to Dt = (1.4±0.1)×10–5 cm2/s, of which approximately 20% can be attributed to correlated, collective motion.
Item Type:Article
Copyright:© 2000 American Institute of Physics
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/59758
Official URL:http://dx.doi.org/10.1063/1.1310663
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