Thermochemistry of 1-methylnaphthalene hydroconversion : comparison of group contribution and ab-initio models. - Archive ouverte HAL Access content directly
Journal Articles Energy & Fuels Year : 2013

Thermochemistry of 1-methylnaphthalene hydroconversion : comparison of group contribution and ab-initio models.

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Abstract

As a necessary step in the development of microkinetic models for the hydroconversion of heavy hydrocarbon fractions, we report an assessment of various DFT models for the calculation of molecular thermochemical properties in comparison with Benson's group contribution method for reactants, intermediates and products involved in the hydrogenation of 1-methylnaphatalene. The association of the G4 level with homodesmic decomposition schemes (HI-G4-iso method) has significantly improved the accuracy of the thermodynamic calculated properties when the resemblance of reactants and products are taken into account. Although smaller deviations are observed for Benson's GA method, sorne limitations appear when position isomers are included. This gap can be fulfilled with homodesmic/DFT models, whose deviations are not so far from those obtained with Benson's GA method.
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Dates and versions

hal-00907705 , version 1 (10-05-2022)

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Attribution - NonCommercial - CC BY 4.0

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Maria Contreras, Theodorus de Bruin, Pascal Mougin, Hervé Toulhoat. Thermochemistry of 1-methylnaphthalene hydroconversion : comparison of group contribution and ab-initio models.. Energy & Fuels, 2013, 27 (9), pp.5475-5482. ⟨10.1021/ef401064j⟩. ⟨hal-00907705⟩

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