JOURNAL OF SOLUTION CHEMISTRY
·
2022
·Vol. 52
·期 1
·91-104
·
IF 2
Yu Yingmin,Yi Lingxiao,Wei Jiajun,Guo Hongyue,Li Min
The liquid–liquid equilibrium (LLE) data for ethylene glycol + 2-ethyl-1-hexanol + { n -hexane, 1-hexene, 2-propyl-1-heptanol, and isopropyl ether} were measured at 298.2 K under 101.3 kPa. The distribution constant ( D ) and selectivity ( S ) of 2-ethyl-1-hexanol in the systems were calculated to analyze the extraction ability of the four extractants. The Bachman and Othmer–Tobias equations were chosen to examine the experimental LLE data. The linear correlation coefficient R 2 is greater than 0.98, indicating that the linear fitting of the experimental data is good. The data were regressed by thermodynamic models NRTL and UNIQUAC. The deviation between experimental data and simulated data was calculated by the root mean square deviation (RMSD) and the absolute average deviation (AAD). The RMSD is less than 0.79% and the AAD is less than 0.46%. It indicates that the two models are suitable for the regression of the system.
研究领域:
化学工程
·
热力学
✓ 已验证
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2022
·
IF 3.119
Yingmin Yu,Xiaocheng Zhang,Lingxiao Yi,Min Li,Fangyu Zhang,Jiajun Wei
Liquid–liquid equilibrium (LLE) data of ternary systems {2-ethyl-1-hexanol + ethylene glycol + water/n-heptane} were measured at 298.2, 308.2, and 318.2 K under 101.3 kPa. The distribution coefficient (D) and selectivity coefficient (S) of the systems were calculated to analyze the extraction ability of the two extractants that separate 2-ethyl-1-hexanol and ethylene glycol. Meanwhile, the NRTL and UNIQUAC activity coefficient models were used to correlate the experimental data and the different model parameters were obtained by data regression. The root-mean-square deviation (RMSD) between the calculated and experimental values was less than 0.96%, indicating that both models have a reasonable correlation with the experimental data of the ternary system and can accurately predict the experimental data. GUI-MATLAB has validated the binary interaction parameters.
研究领域:
化学工程
·
热力学
✓ 已验证
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2019
·
IF 3.375
Xingang Li,Rui Wang,Yutao Yan,Runnan Zhao,Hong Li,Xin Gao
EG is an important industrial raw material, and the hydrolysis of 2-ethyl-1,3-dioxolane (2ED) to re-obtain EG is a very important step to recover EG from an EG and 1,2-BDO azeotropic mixture via a reversible-reaction-assisted intensification process. The applicability of reactive distillation for 2ED hydrolysis in the presence of KRD-002 ion exchange is studied by experiments and simulations. The reaction kinetics were investigated, and the kinetic parameters were derived. Thermodynamic aspects of the reaction system were discussed, and the NRTL model was built. Pilot-plant reactive distillation experiments were performed using the structured catalytic packing unit (SCPI) with several operating condition variations (reflux ratio (RR), feed mole ratio (FMR), and feed-in style). The experimental results are in good agreement with the simulation results, which prove that the equilibrium stage model can describe the hydrolysis experiments quantitatively. The simulation was subsequently used to determine the influence of important design factors and laid the foundation for industrial application.
研究领域:
化学工程
·
工业催化
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF STORED PRODUCTS RESEARCH
·
2025
·
IF 2.8
Chen Wang,Dianxuan Wang,Fangfang Zeng,Liang Chen
The Indian meal moth, Plodia interpunctella , is a globally important pest of dried fruits and nuts; however, little is known about its oviposition preferences among different dried fruits and nuts. The oviposition preference of Plodia interpunctella was measured on goji berry, fig, walnut, hazelnut, normal-oleic, and high-oleic peanut. Differential volatile organic compounds (VOCs) were identified using gas chromatography–electroantennographic detection (GC–EAD) and further validated using electrophysiological recordings, Y-tube olfactometer assays, and oviposition preference bioassays. Females laid significantly more eggs on goji berry, fig, walnut, hazelnut, and normal-oleic peanut than on high-oleic peanut. Nine active VOCs were identified using GC–EAD with undecane, eicosane, hexadecane, nonanal, ethyl caproate, 2-ethyl-1-hexanol, and octane, eliciting a dose response EAG activity. The Y-tube and oviposition bioassays further demonstrated that females were significantly attracted to nonanal and octane, which were abundant in the more preferred nuts and fruits. In contrast, females were repelled by 2-ethyl-1-hexanol, which was more abundant in high-oleic peanut. These findings provide insights into the chemical ecology of P. interpunctella and support the development of volatile-based attractants and repellents for the management of stored products pest.
研究领域:
昆虫学
·
化学生态学
·
害虫管理
·
储藏物保护
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2023
·
IF 2.6
Yingmin Yu,Jiajun Wei,Deming Zhao,Lingxiao Yi,Mai Han,Jingwei Cao,Fangyu Zhang,Xiaocheng Zhang
To recover 2-ethyl-1-hexanol and 1,2-propanediol from waste polyester alcoholysis products, liquid–liquid equilibrium (LLE) data for the ternary system of 2-ethyl-1-hexanol + 1,2-propanediol + (water, n-heptane) at different temperatures (303.2, 313.2, and 323.2 K) were studied at 101.3 kPa. The distribution coefficient (D) and selectivity coefficient (S) were used as indicators to assess the separation effect. The NRTL and UNIQUAC models were used to correlate the experimental data and the root mean square deviation (RMSD) values were calculated to be less than 0.75 and 0.97%, respectively. Finally, the consistency between the experimental data and the regression parameters was verified using the GUI-MATLAB tool. σ-Profiles are used to discuss the interactions of substances in this work. It was found that both extractants could separate and extract 2-ethyl-1-hexanol and 1,2-propanediol effectively, with water being more effective.
研究领域:
化学工程
·
热力学
·
分离科学
✓ 已验证
DOI
高影响因子
JOURNAL OF SOLUTION CHEMISTRY
·
2021
·Vol. 50
·期 4
·544-557
·
IF 1.677
Dong Shihua,Jia Bing,Chen Xiubin,Jiang Xiaobo
For separation of the azeotropes of water + 2-methyl-3-buten-2-ol by liquid–liquid extraction, methyl tert-butyl ether or butyl acetate or 4-methyl-2-pentanone or 2-ethyl-1-hexanol was selected as the extraction solvent. The liquid–liquid equilibrium (LLE) data for water + 2-methyl-3-buten-2-ol + (methyl tert-butyl ether/butyl acetate/4-methyl-2-pentanone/2-ethyl-1-hexanol) ternary systems at 308.2 K under 101.3 kPa were determined. The distribution coefficient and the separation factor were calculated to evaluate the extraction ability of different solvents. The Othmer–Tobias, Bachman, and Hand equations were applied to verify the reliability of the experimental LLE data. Meanwhile, the experimental LLE data were successfully correlated by the NRTL and UNIQUAC models with the root-mean-square deviations (RMSD) were less than 0.42%.
研究领域:
化学工程
·
热力学
·
物理化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）