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Title: Effect of the exchange-correlation potential on the transferability of Bronsted-Evans-Polanyi relationships in heterogeneous catalysis
Author: Fajin, Jose L. C.
Viñes Solana, Francesc
Cordeiro, M. Natália D. S.
Illas i Riera, Francesc
Gomes, José R. B.
Keywords: Catàlisi heterogènia
Reaccions químiques
Heterogeneus catalysis
Chemical reactions
Issue Date: 1-May-2016
Publisher: American Chemical Society
Abstract: As more and more accurate density functional methods emerge, the transferability of Bronsted-Evans-Polanyi (BEP) relationships obtained with previous models is an open question. In this work, BEP relationships derived from different density functional theory based calculations are analyzed to answer this question. In particular, BEP relationships linking the activation energy of O-H bond breaking reactions taking place on metallic surfaces with the adsorption energy of the reaction products are chosen as a case study. These relationships are obtained with the widely used Perdew-Wang (PW91) generalized gradient approximation (GGA) exchange-correlation functional and with the more accurate meta-GGA Tao-Perdew Staroverov-Scuseria (TPSS) one. We provide compelling evidence that BEP relationships derived from PW91 and TPSS functionals are essentially coincidental. This finding validates previously published BEP relationships and indicates that the reaction activation energy barrier can be obtained by the determination of the energy reaction descriptor value at the less computationally demanding GGA level; an important aspect to consider in future studies aimed at the computational design of catalysts :with improved characteristics.
Note: Versió postprint del document publicat a:
It is part of: Journal of Chemical Theory and Computation, 2016, vol. 12, num. 5, p. 2121-2126
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ISSN: 1549-9618
Appears in Collections:Articles publicats en revistes (Ciència dels Materials i Química Física)

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