The density (ρ), dynamic viscosity (η), and speed of sound (u) of benzyl acetate (BA) and aromatic isomers [iso-butylbenzene (IBB), sec-butylbenzene (SBB), tert-butylbenzene (TBB)] binary liquid systems were measured at T = (293.15–313.15 K) temperature under 0.1 MPa pressure over the entire concentration range of benzyl acetate. The density, dynamic viscosity, and speed of sound data for three liquid systems were analyzed using the Jouyban–Acree (J–A) model. Using measured data, thermodynamic properties such as excess molar volume (<InlineEquation ID="IEq1"> <EquationSource Format="TEX">${V}_{\text{m}}^{\text{E}}$</EquationSource> <EquationSource Format="MATHML"><math> <msubsup> <mi>V</mi> <mrow> <mtext>m</mtext> </mrow> <mtext>E</mtext> </msubsup> </math></EquationSource> </InlineEquation>), excess molar isentropic compressibility (<InlineEquation ID="IEq2"> <EquationSource Format="TEX">${k}_{s,\text{m}}^{\text{E}}$</EquationSource> <EquationSource Format="MATHML"><math> <msubsup> <mi>k</mi> <mrow> <mi>s</mi> <mo>,</mo> <mtext>m</mtext> </mrow> <mtext>E</mtext> </msubsup> </math></EquationSource> </InlineEquation>), apparent molar volumes (<InlineEquation ID="IEq3"> <EquationSource Format="TEX">${V}_{\text{m},\phi ,1}$</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>V</mi> <mrow> <mtext>m</mtext> <mo>,</mo> <mi>ϕ</mi> <mo>,</mo> <mn>1</mn> </mrow> </msub> </math></EquationSource> </InlineEquation> and <InlineEquation ID="IEq4"> <EquationSource Format="TEX">${V}_{\text{m},\phi ,2}$</EquationSource> <EquationSource Format="MATHML"><math> <msub> <mi>V</mi> <mrow> <mtext>m</mtext> <mo>,</mo> <mi>ϕ</mi> <mo>,</mo> <mn>2</mn> </mrow> </msub> </math></EquationSource> </InlineEquation>), viscosity deviation (∆η), and excess Gibbs free energy of activation (<InlineEquation ID="IEq5"> <EquationSource Format="TEX">${G}^{\text{E}}$</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow> <mi>G</mi> </mrow> <mrow /> <mrow> <mrow /> <mo>∗</mo> <mtext>E</mtext> </mrow> </mmultiscripts> </math></EquationSource> </InlineEquation>) for viscous flow were determined. Further, the observed <InlineEquation ID="IEq6"> <EquationSource Format="TEX">${V}_{\text{m}}^{\text{E}}$</EquationSource> <EquationSource Format="MATHML"><math> <msubsup> <mi>V</mi> <mrow> <mtext>m</mtext> </mrow> <mtext>E</mtext> </msubsup> </math></EquationSource> </InlineEquation>, ∆η, <InlineEquation ID="IEq7"> <EquationSource Format="TEX">${G}^{\text{E}}$</EquationSource> <EquationSource Format="MATHML"><math> <mmultiscripts> <mrow> <mi>G</mi> </mrow> <mrow /> <mrow> <mrow /> <mo>∗</mo> <mtext>E</mtext> </mrow> </mmultiscripts> </math></EquationSource> </InlineEquation>, and <InlineEquation ID="IEq8"> <EquationSource Format="TEX">${k}_{s,\text{m}}^{\text{E}}$</EquationSource> <EquationSource Format="MATHML"><math> <msubsup> <mi>k</mi> <mrow> <mi>s</mi> <mo>,</mo> <mtext>m</mtext> </mrow> <mtext>E</mtext> </msubsup> </math></EquationSource> </InlineEquation> data were correlated with data obtained using the Redlich–Kister (R–K) model. Moreover, the excess molar volume was theoretically characterized using Prigogine–Flory–Patterson (PFP) theory. Thermodynamic studies suggest the development of new unlike interactions (unpacking efficiency, and dispersion forces) between benzyl acetate and aromatic isomers.

Thermodynamic Properties of Binary Liquid Mixtures of Benzyl acetate and Aromatic isomers (iso-Butylbenzene, sec-Butylbenzene, tert-Butylbenzene) at T = (293.15 – 313.15) K

期刊论文
发表日期：

2026年3月9日

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Ramachandra Rao Panem,
Gavinolla Pranitha,
Srinivasa Reddy Bireddy,
Jagadeesh Kumar Ega,
Siddhartha Marupati,
Bolloju Satheesh

摘要

The density (ρ), dynamic viscosity (η), and speed of sound (u) of benzyl acetate (BA) and aromatic isomers [iso-butylbenzene (IBB), sec-butylbenzene (SBB), tert-butylbenzene (TBB)] binary liquid systems were measured at T = (293.15–313.15 K) temperature under 0.1 MPa pressure over the entire concentration range of benzyl acetate. The density, dynamic viscosity, and speed of sound data for three liquid systems were analyzed using the Jouyban–Acree (J–A) model. Using measured data, thermodynamic properties such as excess molar volume ( ${V}_{\text{m}}^{\text{E}}$ $V_{m}^{E}$ ), excess molar isentropic compressibility ( ${k}_{s,\text{m}}^{\text{E}}$ $k_{s, m}^{E}$ ), apparent molar volumes ( ${V}_{\text{m},\phi ,1}$ $V_{m, ϕ, 1}$ and ${V}_{\text{m},\phi ,2}$ $V_{m, ϕ, 2}$ ), viscosity deviation (∆η), and excess Gibbs free energy of activation ( ${G}^{*\text{E}}$ $G^{* E}$ ) for viscous flow were determined. Further, the observed ${V}_{\text{m}}^{\text{E}}$ $V_{m}^{E}$ , ∆η, ${G}^{*\text{E}}$ $G^{* E}$ , and ${k}_{s,\text{m}}^{\text{E}}$ $k_{s, m}^{E}$ data were correlated with data obtained using the Redlich–Kister (R–K) model. Moreover, the excess molar volume was theoretically characterized using Prigogine–Flory–Patterson (PFP) theory. Thermodynamic studies suggest the development of new unlike interactions (unpacking efficiency, and dispersion forces) between benzyl acetate and aromatic isomers.