Excess Enthalpies for Binary Mixtures of the Reactive System Acetic Acid + n-Butanol + n-Butyl Acetate + Water: Brief Data Review and Results at 313.15 K and Atmospheric Pressure

Golikova, Alexandra; Shasherina, Anna Yu.; Anufrikov, Yuri A.; Misikov, Georgii; Toikka, Maria; Zvereva, Irina A.; Тойкка, А. М.

doi:10.3390/ijms24065137

Cited by 3 publications

(1 citation statement)

References 34 publications

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“…Permittivity, dielectric loss and electrical conductivity were measured at 30 • C and 60 • C. Data on viscosity were obtained in the temperature range 30 • C-80 • C. The density of the mixtures was studied at 50 • C. This paper is dedicated to the physico-chemical properties of three alcohols (npropanol, n-butanol and n-pentanol) blended with oil. Earlier, we investigated liquidliquid equilibria and excess enthalpies in multicomponent systems containing ethanol [37], propanol [38], butanol [39] and pentanol [40]. Because the observed alcohols are not only used as the additive to fuels or the biodiesel fuel itself, and, together with carboxylic acids and corresponding esters are the components of various natural oils, the alcohol-oil blends can be observed as model ones to investigate the physico-chemical properties which can be needed for industrial application.…”

Section: Introductionmentioning

confidence: 99%

Excess Enthalpies Analysis of Biofuel Components: Sunflower Oil–Alcohols Systems

Golikova,

Shasherina,

Anufrikov

et al. 2024

IJMS

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This study addresses the pressing issues of energy production and consumption, in line with global sustainable development goals. Focusing on the potential of alcohols as “green” alternatives to traditional fossil fuels, especially in biofuel applications, we investigate the thermochemical properties of three alcohols (n-propanol, n-butanol, n-pentanol) blended with sunflower oil. The calorimetric analysis allows for the experimental determination of excess enthalpies in pseudo-binary mixtures at 303.15 K, revealing similarities in the trends of the curves (dependence on concentrations) but with different values for the excess enthalpies for each mixture. Despite the structural differences of the alcohols studied, the molar excess enthalpy values exhibit uniformity, suggesting consistent mixing behavior. The peak values of excess enthalpies for systems with sunflower oil and n-propanol, n-butanol and n-pentanol are, respectively, 3255.2 J/mole, 3297.4 J/mole and 3150.1 J/mole. Both the NRTL and Redlich–Kister equations show satisfactory agreement with the obtained values.

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Section: Introductionmentioning

confidence: 99%

Excess Enthalpies Analysis of Biofuel Components: Sunflower Oil–Alcohols Systems

Golikova,

Shasherina,

Anufrikov

et al. 2024

IJMS

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Excess Enthalpies and Heat of Esterification Reaction in Acetic Acid–n-Butanol–n-Butyl Acetate–Water System at 313.15 K

Golikova,

Anufrikov,

Shasherina

et al. 2024

Russ J Gen Chem

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The Material Balance of Complex Separation Flowsheets

Frolkova,

Sibirtsev

et al. 2024

Processes

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The paper shows the expediency of supplementing the balance simplex method by calculating the number of free variables of separation flowsheets containing recycle flows. The need to determine and set the free variables that provide lower energy consumption when calculating the material balance of flowsheets with recycling is justified. The problem of material balance multivariance is illustrated, and ways to solve it are shown with the example of separation flowsheets for two ternary mixtures: n-butanol + water + toluene and n-butanol + butyl acetate + water. Separation flowsheets containing three distillation columns and a liquid–liquid separator are proposed for both systems. The dependence of the recycle flow values and the energy consumption of distillation columns and separation flowsheets on the selection and setting of values of free variables in solving the balance problem is shown. The dependence of energy consumption on the composition of the original mixture is studied for an n-butanol + butyl acetate + water system. Recommendations for setting free variables for flowsheets of the separation of ternary mixtures with three binary (and one ternary) azeotropes are formulated. The technique of highlighting the region of separation flowsheet operability is illustrated. The column operating parameters that ensure the production of products of a given quality with minimal energy consumption are determined. It is shown that with the incorrect selection and setting of variables (during balance task solvation), the energy consumption for mixture separation can be overestimated by more than 40%.

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Excess Enthalpies for Binary Mixtures of the Reactive System Acetic Acid + n-Butanol + n-Butyl Acetate + Water: Brief Data Review and Results at 313.15 K and Atmospheric Pressure

Cited by 3 publications

References 34 publications

Excess Enthalpies Analysis of Biofuel Components: Sunflower Oil–Alcohols Systems

Excess Enthalpies Analysis of Biofuel Components: Sunflower Oil–Alcohols Systems

Excess Enthalpies and Heat of Esterification Reaction in Acetic Acid–n-Butanol–n-Butyl Acetate–Water System at 313.15 K

The Material Balance of Complex Separation Flowsheets

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