Theoretically consistent calculation of viscous activation parameters through the Eyring equation and their interpretation

Autor(es)

dos Santos, Lucas J. ^[1] ; Espinoza-Velasquez, Luis Alonso ^[1] ; Coutinho, Joao A. P. ^[2] ; Monteiro, Simone ^[1]

Afiliação do(s) autor(es)

^[1] Univ Brasilia, Inst Chem, Campus Univ Darcy Ribeiro, BR-70910000 Brasilia, DF - Brazil

^[2] Univ Aveiro, CICECO Aveiro Inst Mat, Dept Chem, Aveiro - Portugal

• Tipo de documento: Artigo Científico
• Fonte: Fluid Phase Equilibria; v. 522, NOV 1 2020.
• Citações Web of Science: 0

Resumo

The activation parameters of viscous flow can be used to probe the molecular interactions in fluids from viscosity experimental data. They are assessed by mathematical derivations of the Eyring equation, but differences in these derivations can generate parameters that lead to conflicting interpretations. In this work, a new method for the estimation of the activation parameters of viscous flow is proposed and compared with two other methods previously reported in the literature. It is shown that the new method is the only presenting theoretically consistent trends, as confirmed by its application to alkanes and ionic liquids. (C) 2020 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 14/21252-0 - Equilíbrio e processos de produção de biocombustíveis e bioprodutos
• Beneficiário: Antonio José de Almeida Meirelles
• Modalidade de apoio: Auxílio à Pesquisa - Temático