Thermodynamic Properties of 1-Butanol + Ethyl Laurate Binary Mixtures by Combining Experimental Speeds of Sound with Volume Translated Peng–Robinson Equation of State

Dong, Ao; Zhan, Taotao; Su, Yuqi; He, Hongyu; Jia, Weijie; He, Maogang; Zhang, Ying

doi:10.1021/acs.jced.3c00289

Cited by 1 publication

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“…The combining rules are as follows: σ i j = false( σ i + σ j false) 2 ε i j = ε i ε j false( 1 − k i j false) where σ i and ε i are the diameter of the hard-sphere fragment and depth of pair potential of the i th component, respectively; k ij is the binary interaction parameter (BIP). The effect of temperature on BIP has been discussed, ,, and we directly adopt the second-order polynomial form for BIP in this work, defined as follows: k i j = falsefalse ∑ i = 0 2 d i true( T T ref true) i where T ref = 100 K and d i is a polynomial coefficient.…”

Section: Resultsmentioning

confidence: 99%

“…Finally, the expended relative combined uncertainty of the speed of sound in the binary system is assessed to be 1.6% (k = 2, confidence level = 95%). Tests with 1-propanol have been performed in our previous literature, 23 showing that the experimental measurement system has high efficiency and accuracy. 4 and Figure5.…”

Section: Measurement Methodology and Apparatusmentioning

confidence: 99%

“…where σ i and ε i are the diameter of the hard-sphere fragment and depth of pair potential of the ith component, respectively; k ij is the binary interaction parameter (BIP). The effect of temperature on BIP has been discussed, 23,28,29 and we directly adopt the second-order polynomial form for BIP in this work, defined as follows:…”

Section: Measurement Methodology and Apparatusmentioning

confidence: 99%

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Speed of Sound Measurements and Thermophysical Modeling of Binary Mixtures of Methyl Laurate and n-Dodecane

He,

Zhan,

Chen

et al. 2024

J. Chem. Eng. Data

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The speed of sound in binary mixtures of methyl laurate and n-dodecane can directly characterize fuel injection and NOx emissions from diesel engines. Currently, experimental data on the speed of sound of binary mixtures have not yet been reported. In this study, the speeds of sound of the binary system were measured by using Brillouin light scattering. The speeds of sound were measured in the range of 298.15−568.15 K and 0.1−9 MPa. The relative combined expanded uncertainty for the reported speed of sound is estimated to be 1.6% with the level of confidence is 0.95 (k = 2). The experimental data were correlated as a function of temperature and pressure resulting with absolute average percentage deviations of 0.19, 0.16, 0.20, 0.24, and 0.22% for the mole fractions of n-dodecane being 0.100, 0.300, 0.500, 0.700, and 0.900, respectively. Considering the effect of temperature on the binary interaction parameter k ij , k ij of the PC-SAFT equation of state (EoS) was fitted using experimental data for methyl laurate and n-dodecane. The speeds of sound of binary system were calculated using the PC-SAFT EoS, and the average absolute relative deviation is 2.7%.

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