TY - JOUR

T1 - Excess Enthalpies Analysis of Biofuel Components: Sunflower Oil–Alcohols Systems

AU - Golikova, Alexandra

AU - Shasherina, Anna

AU - Anufrikov, Yuri

AU - Misikov, Georgii

AU - Kuzmenko, Petr

AU - Smirnov, Alexander

AU - Toikka, Maria

AU - Toikka, Alexander

PY - 2024/3/13

Y1 - 2024/3/13

N2 - 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.

AB - 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.

KW - excess enthalpy;

KW - calorimetry;

KW - sunflower oil;

KW - thermochemistry;

KW - Redlich–Kister equation;

KW - NRTL

UR - https://www.mendeley.com/catalogue/29fac2a5-1ece-3b13-a9ce-fa3be0691154/

U2 - 10.3390/ijms25063244

DO - 10.3390/ijms25063244

M3 - Article

VL - 25

JO - International Journal of Molecular Sciences

JF - International Journal of Molecular Sciences

SN - 1422-0067

IS - 6

M1 - 3244

ER -