Densities and Viscosities of Ethyl Heptanoate and Ethyl Octanoate at Temperatures from 303 to 353 K and at Pressures up to 15 MPa

Liu, Xiang Yang; Lai, Tianwang; Guo, Xudong; He, Maogang; Dong, Wei; Shang, Tansu; Yang, Weiping

doi:10.1021/acs.jced.7b00386

Cited by 22 publications

(16 citation statements)

References 35 publications

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“…UAE has little effect on extractions using sunflower oil and this can be ascribed to the fact that sunflower oil is more viscous at the chosen temperature (60 °C) (21.8 mPa·s [ 33 ]) than FAEE (0.75 mPa·s [ 34 ]) and is, therefore, less prone to cavitation. At the same time, the viscosity of FAEE is low enough to facilitate mass transfer while the viscosity of sunflower oil is still high.…”

Section: Resultsmentioning

confidence: 99%

Fatty Acid Ethyl Esters (FAEE): A New, Green and Renewable Solvent for the Extraction of Carotenoids from Tomato Waste Products

et al. 2021

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Currently there is a drive towards the minimisation and reclamation of valuable materials from the waste products of the food and beverage industry. This can be achieved through the extraction of residual nutraceuticals from such materials. Tomato pomace contains carotenoids and other chemicals which can be extracted directly into edible oils to improve the health-giving properties of such oils. We report here a novel green solvent, fatty acid ethyl esters (FAEE), which is significantly more effective than sunflower oil and hexane for the extraction of lycopene and beta-carotene from tomato skin waste. FAEE are a non-toxic renewable resource that is environmentally friendly and to our knowledge has never been used as a vegetal extraction fluid. The efficiency of FAEE extraction was significantly improved relative to both sunflower oil and hexane under ultrasound-assisted extraction (UAE) conditions. In addition, FAEE have the additional and significant advantage that once enriched with the extracted nutraceuticals can be used directly as a food additive.

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Section: Resultsmentioning

confidence: 99%

Fatty Acid Ethyl Esters (FAEE): A New, Green and Renewable Solvent for the Extraction of Carotenoids from Tomato Waste Products

et al. 2021

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“…Viscosity has a significant impact on the spray characteristics and combustion of the fuel [13]. For decades, the experimental viscosity of oxygenated compounds has been widely reported [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33] often with significant scatter. In addition to the provision of accurate data, a rigid theoretical model for the viscosity of oxygenated fuels is required to further our knowledge and assist applications.…”

Section: Introductionmentioning

confidence: 99%

“…For each component, the parameters in Eq. ( 12) are obtained by correlating the experimental 183 data from literatures [14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33]…”

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Viscosity of oxygenated fuel: A model based on Eyring’s absolute rate theory

Zhu

Yang

Liu

et al. 2019

Fuel

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A viscosity model was proposed for oxygenated fuel components; it was based on Eyring's absolute rate theory and a cubic equation of state Soave-Redlich-Kwong. The viscosity was associated with flow energy which could be divided into the activation energy and the vacancy-formation energy, and then a reference state for simplifying the calculation process was introduced in the present model. This work also reported a viscosity database at temperatures from 243.15 K to 413.15 K and pressures up to 200 MPa for 31 oxygenated fuel components containing alcohols, esters and ethers in order to verify the proposed model. The average absolute relative deviations between calculated and experimental data were lower than 2.37%. Furthermore, the free-volume model, which has a similar consideration of flow energy with this work, was chosen to further investigate the performance of the present model, and in general, the present model showed a better accuracy than the free-volume model. Finally, it was shown that the proposed model could be extended to the mixtures successfully.

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“…13 There are plenty of experimental viscosity data for oxygenated fuels from atmospheric pressure to hundreds of megapascals reported in the literature. 14−20 However, experimental data are always discrete points and cannot really meet the actual demand. The accurate viscosity model established on the basis of experimental data is more meaningful to provide sufficient viscosity data of oxygenated fuels.…”

Section: Introductionmentioning

confidence: 99%

General Model Based on Artificial Neural Networks for Estimating the Viscosities of Oxygenated Fuels

et al. 2019

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Oxygenated fuel is a promising alternative fuel for engines because of the advantage of low emission. In this work, a general model based on back-propagation neural networks was developed for estimating the viscosities of different kinds of oxygenated fuels including esters, alcohols, and ethers, whose input variables are pressure, temperature, critical pressure, critical temperature, molar mass, and acentric factor. The viscosity data of 31 oxygenated fuels (1574 points) at temperatures ranging from 243.15 to 413.15 K and at pressures ranging from 0.1 to 200 MPa were collected to train and test the back-propagation neural network model. The comparison result shows that the predictions of the proposed back-propagation neural network model agree well with the experimental viscosity data of all studied oxygenated fuels using the general parameters (weight and bias). The average absolute relative deviations for training data, validation data, and testing data are 1.19%, 1.27%, and 1.30%, respectively.

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Densities and Viscosities of Ethyl Heptanoate and Ethyl Octanoate at Temperatures from 303 to 353 K and at Pressures up to 15 MPa

Cited by 22 publications

References 35 publications

Fatty Acid Ethyl Esters (FAEE): A New, Green and Renewable Solvent for the Extraction of Carotenoids from Tomato Waste Products

Fatty Acid Ethyl Esters (FAEE): A New, Green and Renewable Solvent for the Extraction of Carotenoids from Tomato Waste Products

Viscosity of oxygenated fuel: A model based on Eyring’s absolute rate theory

General Model Based on Artificial Neural Networks for Estimating the Viscosities of Oxygenated Fuels

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