Macro and micro solubility between low-carbon alcohols and rapeseed oil using different co-solvents

Jin, Chi; Zhang, Xiyuan; Han, Weiqiang; Geng, Zhenlong; Thomas, M.; Ampah, Jeffrey Dankwa; Wang, Gang; Ji, Jing; Liu, Haifeng

doi:10.1016/j.fuel.2020.117511

Cited by 28 publications

(6 citation statements)

References 55 publications

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“…has gained interest [3]. The reason has been widely discussed in the literature: sustainable and renewable production [4,5], oxygen content, improvement of physical properties (e.g., viscosities, cold flow properties) [6][7][8], reduction of particulate emissions [9][10][11][12], etc. However, the effects on physical properties are far from being proportional to the alcohol content since many of these properties are affected by intermolecular interactions.…”

Section: Introductionmentioning

confidence: 99%

Relaxation Dynamics of Ethanol and N-Butanol in Diesel Fuel Blends from Terahertz Spectroscopy

Patiño-Camino

Cova-Bonillo

Rodríguez–Fernández

et al. 2021

J Infrared Milli Terahz Waves

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Binary blends of ethanol-diesel, n-butanol-diesel, ethanol-biodiesel, and n-butanol-biodiesel have been analyzed with terahertz time-domain spectroscopy in a full range of concentrations and at room temperature. The real and imaginary parts of the complex dielectric constant of the blends were obtained from the spectra and fitted to the Debye model at low volume concentrations (up to 7.5% for ethanol in diesel and up to 20% for butanol in diesel, ethanol in biodiesel, and butanol in biodiesel blends), considering the number of relaxation processes recommended in the literature for each pure component (single for diesel, double for biodiesel, and triple for alcohols). The results indicate that the faster relaxation time in low alcohol mixtures is longer than in pure alcohols. This relaxation time increases as the alcohol content increases. The excess of the real and of imaginary parts of the dielectric constant were individually determined. The analysis of such excess and of its different contributions (volume, contrast, and interactions) suggests that the intermolecular interactions between the different components of the blends dominate the relaxation dynamics in each pseudo-binary system. Ethanol was found to move blends further away from ideal behavior than n-butanol. In fact, these latter blends showed the most ideal behavior, suggesting that the length of the alcohol carbon chain plays an important role. This information allows a possible link between the nonlinear behavior of the physicochemical properties of the blends (e.g., viscosity and surface tension) and the molecular interactions between their constituent molecules. This relation could have direct application for monitoring the fuel composition and quality in the vehicle control systems.

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Section: Introductionmentioning

confidence: 99%

Relaxation Dynamics of Ethanol and N-Butanol in Diesel Fuel Blends from Terahertz Spectroscopy

Patiño-Camino

Cova-Bonillo

Rodríguez–Fernández

et al. 2021

J Infrared Milli Terahz Waves

View full text Add to dashboard Cite

show abstract

“…Moreover, the energy content of vegetable oils is also close to diesel fuel which leads to using vegetable oils in the engine. Many research attempt to apply vegetable oils in the form of blending fuel such as the use of soybean oil, rapeseed oil, palm oil, and palm kernel oil with a combining of alcohols and several cosolvents, as reported by Jin et al [1][2][3]. According to Jin et al [1][2][3], solubilization and fuel properties in the blends of alcohols and vegetable oils were studied in order to improve engine performance.…”

Section: Introductionmentioning

confidence: 99%

“…Many research attempt to apply vegetable oils in the form of blending fuel such as the use of soybean oil, rapeseed oil, palm oil, and palm kernel oil with a combining of alcohols and several cosolvents, as reported by Jin et al [1][2][3]. According to Jin et al [1][2][3], solubilization and fuel properties in the blends of alcohols and vegetable oils were studied in order to improve engine performance. Tis reason demonstrates the signifcant efect of raw material vegetable oils and other chemical compounds on fuel properties.…”

Section: Introductionmentioning

confidence: 99%

Accurate Predicting the Surface Tension of Vegetable-Oil-Based Fuels Using Gibbs’ Thermodynamic Additivity as an Alternative to QSPR

Sitthisuk

Sudaprasert

Phankosol

et al. 2023

Journal of Chemistry

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The surface tension of fuel oil is one important property of the engine combustion process which is correlative to other oil physical and chemical properties. Therefore, this research focuses on the predictive model of fuel oil surface tension through the outstanding alternative fuel for combustion engines such as vegetable oil which is biodegradable, less toxic, has potential in domestic production, and has energy content close to diesel fuel. The six economic saturated/unsaturated vegetable oil samples (rapeseed, sunflower, soybean, palm, corn, and grapeseed oil) are used as the comparison cases for the predictive model of surface tension. The proposed model is formulated by the concept of the Gibbs energy additivity method (GEAM) which apply two properties of oils composition such as the number of carbon atoms (z) and the number of double bonds (nd) of fatty acid at various temperatures to predict surface tension through the regression model. Three common regression models such as the Parachor model and two literature physical relation models are used as the comparative model at 293.15 K and 313.15 K, respectively. The comparison results of the predictive model show the acceptable predicting value in all predictive models, with an overall average absolute deviation (%AAD) of 0.38% for the proposed model, 2.28% for the Eliezer model, and 2.74% with the Esteban model at 293.15 K, while the overall %AAD at 313.15 K presents 0.21% for the proposed model and 9.08% with the Parachor model. However, the proposed model indicates the use of a combination between molecule structure and thermodynamic parameters by its model mismatch reduction and proves to be a handle for precisely predicting surface tension in the case of vegetable oil.

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“…Having undergone development of more than 100 years, internal combustion (IC) engines have become a remarkable part of the world manufacturing economy [1][2][3] and are widely used in ship transportation, construction machinery, aerospace, private vehicles, and other transport fields [4][5][6][7][8]. Although traditional fuel vehicles have been influenced by new energy vehicles in recent years [9][10][11][12], most of the world driving force could still be dominated by IC engines until 2040 [13].…”

Section: Introductionmentioning

confidence: 99%

Effects of Methanol Application on Carbon Emissions and Pollutant Emissions Using a Passenger Vehicle

et al. 2022

Self Cite

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Methanol, as a promising carbon-neutral fuel, has become a research hotspot worldwide. In this study, pure gasoline and gasoline blended with five different volume ratios of methanol (10%, 20%, 30%, 50%, and 75%) were selected as test fuels, which were referred to as M0, M10, M20, M30, M50, and M75. The experiments on carbon and pollutant emissions and performance were carried out on a passenger vehicle with gasoline direct injection (GDI) turbocharged engine using the steady-state, new European driving cycle (NEDC), and acceleration approaches. The results show that under steady-state conditions, as the methanol blending ratio increases, the volume of fuel consumption increases. Compared with pure gasoline, the equivalent fuel consumption and the CO2 emissions are reduced by 0.95 L/100 km (10.6%) and 18.95 g/km (9.6%) in maximum extent by fueling M75, respectively. In the NEDC, the CO2 emissions of M30 are reduced by 5.46 g/km (3.7%) compared with pure gasoline. After blending methanol in gasoline, CO emissions increase, and the emissions of NOx, THC, and PM decrease. The acceleration time is shortened with the increase of blending ratio of methanol. The application of methanol reduces the combustion CO2 emissions by 10% and improves the pollutant emissions.

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Macro and micro solubility between low-carbon alcohols and rapeseed oil using different co-solvents

Cited by 28 publications

References 55 publications

Relaxation Dynamics of Ethanol and N-Butanol in Diesel Fuel Blends from Terahertz Spectroscopy

Relaxation Dynamics of Ethanol and N-Butanol in Diesel Fuel Blends from Terahertz Spectroscopy

Accurate Predicting the Surface Tension of Vegetable-Oil-Based Fuels Using Gibbs’ Thermodynamic Additivity as an Alternative to QSPR

Effects of Methanol Application on Carbon Emissions and Pollutant Emissions Using a Passenger Vehicle

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