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Volumn 101, Issue 33, 1997, Pages 6394-6408

Molecular dynamics simulations of alkanes in the zeolite silicalite: Evidence for resonant diffusion effects

Author keywords

[No Author keywords available]

Indexed keywords

ACTIVATION ENERGY; COMPUTATIONAL METHODS; CONFORMATIONS; DIFFUSION IN SOLIDS; MATHEMATICAL MODELS; MOLECULAR STRUCTURE; PARAFFINS; THERMAL EFFECTS; ZEOLITES;

EID: 0031208595     PISSN: 15206106     EISSN: None     Source Type: Journal    
DOI: 10.1021/jp970774a     Document Type: Article
Times cited : (114)

References (76)
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    • Maginn, E. J.; Bell, A. T.; Theodorou, D. N. Low-Occupancy Sorption Thermodynamics of Long Alkanes in Silicalite Via Molecular Simulation. In Zeolites and Related Microporous Materials: State of the Art 1994; Weitkamp, J., Karge, H. G., Pfeifer, H., Hölderich, W. F., Eds.; Studies in Surface Science and Catalysis 84; Elsevier Science Publishers B.V.; Amsterdam, 1994.
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    • The orthorhombic silicalite structure has been shown to undergo a reversible phase transition at about 330 K to a structure having monoclinic symmetry. Below this temperature, the monoclinic form is most stable, and above it the orthorhombic form is most stable (Hay, D. G.; Jaeger, H.; West, G. W. J. Phys. Chem. 1985, 89, 1070-1072).
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    • The potential parameters for bond angle fluctuations were taken from van der Ploeg et al. (van der Ploeg, P.; Berendson, H. J. C. J. Chem. Phys. 1982, 76, 3271-3276), while the torsion potential was originally given by Ryckaert et al. (Ryckaert, J. P.; Bellemans, A. Faraday Discuss. Chem. Soc. 1978, 66, 95-106).
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    • See, for example: Jorgensen, W. L.; Madura, J. D; Swenson, C. J. J. Am. Chem. Soc. 1984, 106, 6638-6646. Rodríguez, A. L.; Vega, C.; Freire, J. J.; Lago, S. Mol. Phys. 1991, 73, 691-701. Smit, B.; Karaborni, S.; Siepmann, J. I. J. Chem. Phys. 1995, 102, 2126-2139.
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    • See, for example: Jorgensen, W. L.; Madura, J. D; Swenson, C. J. J. Am. Chem. Soc. 1984, 106, 6638-6646. Rodríguez, A. L.; Vega, C.; Freire, J. J.; Lago, S. Mol. Phys. 1991, 73, 691-701. Smit, B.; Karaborni, S.; Siepmann, J. I. J. Chem. Phys. 1995, 102, 2126-2139.
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    • 0000921686 scopus 로고
    • See, for example: Jorgensen, W. L.; Madura, J. D; Swenson, C. J. J. Am. Chem. Soc. 1984, 106, 6638-6646. Rodríguez, A. L.; Vega, C.; Freire, J. J.; Lago, S. Mol. Phys. 1991, 73, 691-701. Smit, B.; Karaborni, S.; Siepmann, J. I. J. Chem. Phys. 1995, 102, 2126-2139.
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    • An all-atom model is currently being investigated. This model is similar to the CVFF and PCFF forcefields used in the commercial software package offered by MSI, San Diego, CA
    • An all-atom model is currently being investigated. This model is similar to the CVFF and PCFF forcefields used in the commercial software package offered by MSI, San Diego, CA.
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    • For example, see refs 24-26
    • For example, see refs 24-26.
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    • note
    • 12 took roughly 3 CPU hours per ns of simulation time on a Sun Ultra 170 workstation.
  • 66
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    • note
    • s.
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    • note
    • In essence, the concept of a "negative" activation energy makes no sense in terms of the classic concept of an activated process. Nevertheless, we report values for the apparent activation energy as a means of quantifying the temperature dependence of the self-diffusivity.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.