Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.21/7182
Título: Self-diffusivity measurements of dimethyl, diethyl, dipropyl, dibutyl, Bis(2-ethylhexyl) adipates from (293e339) K by a PGSEeNMR spin-echo technique
Autor: Ascenso, José R.
Rubio, Guilherme
Diogo, João C.F.
Avelino, Helena M.N.T.
Caetano, Fernando J.P.
Fareleira, João M.N.A.
Palavras-chave: Self-diffusivity
Hydrodynamic radius
Spin-echo
Dialkyl adipates
Data: 2016
Editora: Elsevier
Citação: ASCENSO, R. Ascenso; [et al] - Self-diffusivity measurements of dimethyl, diethyl, dipropyl, dibutyl, Bis(2-ethylhexyl) adipates from (293e339) K by a PGSEeNMR spin-echo technique. Fluid Phase Equilibria. ISSN 0378-3812. Vol. 410, (2016), pp 37-41.
Resumo: The article reports self-diffusivity measurements of dimethyl (DMA), diethyl (DEA), dipropyl (DPA), dibutyl (DBA), and bis(2-ethylhexyl) (DEHA) adipates from (293e339) K by the PGSEeNMR technique. The expanded uncertainty of the results is estimated to better than ±2%. The results are interpreted in terms of the hydrodynamic and the van der Waals radii. The former are calculated a Stokes-EinsteinSutherland-type equation, using recently published viscosity data. Furthermore, recently published density data for those adipates are used to calculate the hard sphere radii at contact in a cubic lattice, in order to compare the radii obtained from transport properties with those obtained from equilibrium data. In this temperature range the self-diffusivities of the liquid dialkyl adipates studied have an Arrhenius-like behavior.
Peer review: yes
URI: http://hdl.handle.net/10400.21/7182
DOI: 10.1016/j.fluid.2015.11.020
ISSN: 0378-3812
1879-0224
Versão do Editor: http://ac.els-cdn.com/S0378381215302259/1-s2.0-S0378381215302259-main.pdf?_tid=6b335d76-527f-11e7-87a7-00000aacb35e&acdnat=1497609467_fe88eccc357b72aa2ed643b9071141c4
Aparece nas colecções:ISEL - Eng. Quim. Biol. - Artigos

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