Chemical Engineering Journal Advances
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2025
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IF 7.1
Jisheng Li,Xu Zhao,Yuheng Fan,Changyu Sun,Yufeng Hu,Laiyong Zhang,Fayan Zhu,Jilong Han
Boric acid, a vital chemical in industries, agriculture, and high-tech fields, is primarily extracted from Salt Lake brines via liquid-liquid extraction. The efficiency differences between alcohols remain unclear. This study investigates boric acid extraction using isobutanol and isooctanol, combining experiments and theoretical calculations to reveal microscopic mechanisms. Experiments show that under low pH, multi-stage extraction significantly impacts efficiency, with isooctanol outperforming isobutanol. Computational results reveal that isooctanol’s hydroxyl oxygen has a more negative electrostatic potential, forming stronger, more stable hydrogen bonds with boric acid. Isooctanol also exhibits shorter interaction distances and higher interaction energy with boric acid compared to isobutanol. The study concludes that isooctanol’s superior performance is due to its ability to form more and longer-lived hydrogen bonds. This work provides new theoretical insights into boric acid extraction and aids in designing efficient extractants.
研究领域:
化学工程
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理论计算
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DOI
高影响因子
CATALYSIS LETTERS
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2022
·Vol. 153
·期 4
·1215-1226
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IF 2.936
Wang Shiqing,Li Yafei,Lan Xiaocheng,Liu Boyang,Wang Tiefeng
Ni phosphide and Lewis acid–base pair site of Al 2 O 3 were combined as highly efficient catalyst for direct amination of 1-octanol to 1-octylamine. Due to the higher dehydrogenation activity and the site isolation effect, Ni 3 P/Al 2 O 3 -TPP prepared by organophosphorus was 4.0 times more active than Ni/Al 2 O 3 and increased the selectivity to 1-octylamine from 71.4 to 92.8% at 0.4 MPa NH 3 . Graphical Abstract
研究领域:
催化化学
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材料科学
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高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2020
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IF 2.369
Lingbo Feng,Wei Zhang,Minglan Ge,Yufeng Yi,Jieming Xiong
Excellent extraction ability and easy regeneration of the extractant are highly important for the recovery of acetic acid from water by solvent extraction. In this paper, the extraction capability of octanol isomers and some conventional extractants was investigated. It was found that the extraction capability of 2-octanol was significantly better than that of the traditional extractant isopropyl acetate. The liquid–liquid equilibrium data for the ternary system of water + acetic acid + 2-octanol were measured at different temperatures (293.2, 303.2, and 313.2 K) under 101 kPa. The results showed that the distribution coefficient and selectivity decreased with an increase in acetic acid concentration and the temperature had little impact on the distribution coefficient, suggesting that the extraction could be conducted over a large temperature range. The reliability of the equilibrium data was also verified using the Othmer–Tobias and Hand equations, and the correlation coefficients were all close to 1.0, suggesting that the experimental data was reliable. Furthermore, the NRTL (nonrandom two-liquid) and UNIQUAC (universal quasichemical) models were employed to correlate the experimental data, and the binary interaction parameters of the ternary system were obtained. The results indicated that, for the UNIQUAC model, the root-mean-square deviations between the experimental and simulated data at different temperatures were from 0.63% to 0.94% and those for the NRTL model were all within 0.6%, which indicate that the NRTL model is more suitable for the ternary system of water + acetic acid + 2-octanol.
研究领域:
化学工程
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分离科学
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高影响因子
JOM
·
2018
·Vol. 70
·期 4
·581-586
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IF 2.145
Liao Yulong,Zhao Zhongwei
Tungsten was recovered from sulfuric–phosphoric acid leach solution of scheelite using 2-octanol and tributyl phosphate (TBP). Approximately 76% of the tungsten and less than 6.2% of the iron were extracted when using 70% 2-octanol, showing good selectivity for tungsten over iron; the tungsten extraction could not be significantly enhanced using a three-stage countercurrent simulation test. Moreover, more than 99.2% of the W and 91.0% of the Fe were extracted when using 70% TBP, showing poor selectivity, but after pretreating the leach solution with iron powder, less than 5.5% of the Fe was extracted. The loaded phases were stripped using deionized water and ammonia solution. The maximum stripping rate of tungsten from loaded 2-octanol was 45.6% when using water, compared with only 13.1% from loaded TBP. Tungsten was efficiently stripped from loaded phases using ammonia solution without formation of Fe(OH) 3 precipitate. Finally, a flow sheet for recovery of tungsten with TBP is proposed.
研究领域:
冶金工程
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化学工程
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DOI
高影响因子
FUEL
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2023
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IF 7.4
Jianqiang Yin,Hongzheng Zhu,Liang Yuan,Bingyou Jiang,Gaochao Pan,Wenliang Zhu,Qinghui Shi
Using the high-speed motion acquisition system, we studied the adhesion ability and wetting ability of coal dust under the effect of four octanol solutions. The adhesion ability followed the order: 2-Octanol > 4-Octanol > 1-Octanol > 3-Octanol. The wrap angle of coal dust on the octanol surface exhibited an increasing trend with the rise in coal proportion of dust. The observed behavior was substantiated by the interaction force, ascertained through molecular dynamic simulations. The interaction force between coal dust and 3-Octanol was the smallest leading to the weakest adhesion ability by the 3-Octanol solution. The contact angle of octanol solution droplet at the coal dust surface under the same octanol concentration was investigated to follow the order: 2-Octanol > 4-Octanol > 1-Octanol > 3-Octanol. The wetting velocity decreased as the coal proportion of dust increased. The wetting ability followed the order: 2-Octanol < 4-Octanol < 1-Octanol < 3-Octanol. The surface energy of dust increased as the coal proportion decreased. The dedusting efficient under the effect of octanols depended on the difference in surface energy between the coal dust and the octanol solution. The greater the Δ γ (difference between the surface energy of the dust and solution), the weaker the adhesion ability, and the stronger the wetting ability. The findings of our study can offer valuable insights for the development of dedusting reagent design.
研究领域:
化学工程
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环境科学
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高影响因子
HYDROMETALLURGY
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2019
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IF 3.465
Yongli Li,Zhongwei Zhao
For more than a hundred years, extraction with ethyl ether has been the most used method for synthetizing H 3 PW 12 O 40 . However, the use of ethyl ether as the extraction agent faced many problems, such as strict regulation by public safety and environment authorities, poor operating environment, significant dissolution loss, low yields (approximately 80%), and difficulty in realizing continuous production. To overcome these problems, a new extraction method has been proposed in this paper, which uses 2-octanol as the extraction agent and water as the stripping agent. Under optimal conditions (30% 2-octanol in kerosene, O:A = 1:1, 180 g/L H 2 SO 4 , 20 g/L H 3 PO 4 , 45 °C, and a contact time of 2 min), 90.2% of H 3 PW 12 O 40 contained in the solution was extracted in a single stage; the loaded H 3 PW 12 O 40 could then be stripped completely via 3-stage continuous countercurrent stripping by maintaining O:A = 5:1, 65 °C, and t = 5 min. Finally, the obtained strip liquor, containing more than 550 g/L H 3 PW 12 O 40 , was evaporated to obtain crystals, resulting in an increased recovery rate of 10%.
研究领域:
化学工程
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材料科学
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高影响因子
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
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2022
·Vol. 101
·期 7
·4217-4229
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IF 2.5
Jia Wang,Rongchun Shen,Yueqiang Cao,Wei Li,Jinghong Zhou
1,2-butanediol (1,2-BDO) and 1,2-propanediol (1,2-PDO) are inevitably side produced in the ethylene glycol (EG) production processes from non-petroleum routes, but are very difficult to separate by the ordinary distillation method because of the closeness of their boiling temperatures to EG, thus compromise the economy of these processes. The azeotropic distillation process using 1-octanol (CPO) as an entrainer to separate EG and 1,2-BDO mixture with or without 1,2-PDO was studied in this paper. Four binary vapour–liquid equilibrium data of EG-1,2-BDO, EG-CPO, 1,2-BDO-CPO, and 1,2-PDO-CPO were measured using an Ellis equilibrium kettle and regressed with the thermodynamic model of non-random two liquid to obtain the corresponding binary interaction parameters. On this basis, azeotropic distillations with CPO as an entrainer were designed to separate EG and 1,2-BDO with or without 1,2-PDO. The complete separation processes, including the azeotropic distillation and CPO recovery process consisting of extraction with H 2 O and subsequent distillation, were simulated and optimized with Aspen Plus for both the EG-1,2-BDO binary mixture and the EG-1,2-BDO-1,2-PDO ternary mixture. The simulation results show that the azeotropic distillation method with CPO as an entrainer can effectively separate the mixture of EG-1,2-BDO and EG-1,2-BDO-1,2-PDO, achieving EG of 99.90% purity with 99.98% recovery and 1,2-BDO of 99.30% purity with 99.45% recovery for the binary mixture, and achieving EG of 99.90% purity with 99.80% recovery, 1,2-BDO of 99.35% purity with 99.35% recovery, and 1,2-PDO of 90.59% purity with 94.38% recovery for the ternary mixture. These processes are promising for industrial application and can significantly improve the economy of non-petroleum EG production.
研究领域:
化学工程
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分离技术
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DOI
高影响因子
SEPARATION SCIENCE AND TECHNOLOGY
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2017
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IF 1.106
Shiwei Wang,Xiuxiang Tao
This study investigated the synergistic effect of viscosity regulators (polyethylene glycol, sodium carboxymethyl cellulose, and polyacrylamide) and frother (2-octanol) on upgrading the flotation performance of low-rank coal. The results of flotation tests were consistent with the analysis of induction time and supported by the results of SEM, viscosity, foaming ability, and foam layer stability. In the present work, it was observed that the highest combustible matter recovery was obtained by mixing the polyethylene glycol (PEG300) with 2-octanol, which increased from 32.9% to about 64.4% accompanied by a little increase of ash content (0.54%). Therefore, it demonstrated that the combination of PEG300 and 2-octanol provided the highest combustible matter recovery and better flotation selectivity.
研究领域:
矿物加工工程
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化学工程
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DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
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2011
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IF 2.356
Meilan Wang,Tao He,Yanfei Pan,Weiping Liao,Shangzhou Zhang,Wei Du
Hydrolysis of tetrabutyl titanate (TBT) and crystallization from hydrolyzed intermediates were carried out in a simple ternary system including n -octanol, TBT and water. Anatase TiO 2 nanocrystals (NCS) were prepared with precise size control below 10 nm. The hydrolysis rate at different water concentration ( C water ) was evaluated by measuring the induction time before turbidity changing of the synthetic solution. Fourier transform infrared spectrum (FT-IR) and thermogravimetric/differential thermal analysis (TG/DTA) techniques were applied to make clear the composition of hydrolyzed intermediates obtained at different C water . Powder X-ray diffraction (XRD) technique was used to track the crystallization process of TiO 2 NCS. Transmission electron microscopy (TEM), XRD, FT-IR and TG/DTA techniques were used to characterize the particular properties of NCS. The C water controlled mechanism responsible for the slow hydrolysis and crystallization were discussed. Since no other organic capping ligands or rapid injecting techniques were used to limit NCS’ growth and the solvent n -octanol can be easily separated and reused, this simple synthetic process is of green chemistry and has application potential in large-scale preparation of inorganic NCS.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
Biomass Conversion and Biorefinery
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2022
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IF 4.05
Li Keying,Zhu Hengji,Zhao Yu,Yan Jingwei,Zhang Jiajian,Lin Xiuhua,Fan Liwei,Lu Zexiang
The solvent has an important impact on liquefaction conversion from biomass to efficiently obtain fuels and chemicals. In this paper, the catalytic liquefaction of woody biomass was studied using fir sawdust as raw material and concentrated sulfuric acid as catalyst in GVL/1-octanol mixed solvent with mechanical stirring and oil bath heating. The influence of GVL on liquefaction yield was discussed, and the liquefaction productions were characterized by some analysis methods to analyze the liquefaction mechanism. The results show that adding GVL benefits to improving liquefaction yield and generating high value-added monophenol because of the enhancement of the surface wettability of biomass and the inhibition of polymerization of mononuclear aromatics with other degradation products. The maximum liquefaction yield of 76.07% was obtained under the suitable conditions of fir sawdust 10 g, temperature 150 ℃, reaction time 60 min, mass ratio of sawdust/solvent 1:6, catalyst concentration 0.6 mol·L −1 , and mass ratio of GVL/1-octanol 4:6. The mechanism study reveals that aromatics originated by lignin degradation as well as small molecule ketones from cellulose and hemicellulose degradation. GVL/1-octanol as an eco-friendly solvent system exhibits a promising prospect of application in woody biomass conversion. Graphical abstract
研究领域:
生物化学
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可再生能源
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绿色化学
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DOI
高影响因子
Journal of Environmental Sciences
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2021
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IF 5.565
Qiongyang Zhou,Ying Wang,Xiaochen Wang,Yuanqi Bai
Aiming to investigate the impacts of n -octanol addition on the oxidation reactivity, morphology and graphitization of diesel exhaust particles, soot samples were collected from a four-cylinder turbocharged diesel engine fueled with D100 (neat diesel fuel), DO15 (85% diesel and 15% n -octanol, V/V ) and DO30 (70% diesel and 30% n -octanol, V/V ). All tests were conducted at two engine speeds of 1370 and 2150 r/min under a fixed torque of 125 N·m. The soot properties were characterized by thermogravimetric analyzer (TGA), transmission electron microscopy (TEM) and Raman spectroscopy (RS). The higher volatile organic fraction content, lower soot oxidation temperatures and lower activation energy from TGA results indicated that both the increasing n -octanol concentration and engine speed enhanced the soot oxidation reactivity. Additionally, quantitative analysis of TEM images showed that the soot derived from DO30 had the smallest primary particle diameters and fractal dimension, followed by those of soot produced by DO15 and D100. The RS results demonstrated that the n -octanol addition and higher engine speed led to a larger D1-FWHM (D1-full width at half maximum), A D1 /A T (area ratio of D1 band and the total spectral) and A D3 /A T (area ratio of D3 band and the total spectral) as well as a smaller L a (crystallite width), revealing a lower degree of graphitization. Furthermore, the correlations between characterization parameters of soot properties and reactivity were nonlinear.
研究领域:
环境科学
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材料科学
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燃烧学
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产品关联
DOI
PubMed
高影响因子
MINERALS ENGINEERING
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2020
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IF 3.795
Xiaoxiao Qiao,An Liu,Zhihong Li,Jinchuan Fan,Canjin Luo,Panpan Fan,Yizhou Liu,Minqiang Fan
A novel combined reagent dodecylamine (DDA)–2-octanol–kerosene was employed to overcome the problems associated with DDA, that is, DDA has a high freezing point and needs to be acidified with hydrochloric or acetic acid when it is used for flotation. The analysis of the basic physical properties of the agent showed that DDA–2-octanol–kerosene had significant advantages in freezing point and dispersibility and its freezing point can be reduced to below 0 °C. From the flotation results of magnetite, it can be seen that DDA–2-octanol–kerosene has a better selectivity. Response Surface Methodology based on a three-level, three-variable Box–Behnken design (BBD) was employed to define the quadratic relationship between the recovery of quartz and the composition of the mixed agent. The results indicated that the recovery of quartz increased with the increase of DDA or 2-octanol dosage, however, kerosene had a marginal positive effect on the recovery of quartz when the amount of kerosene was less than 0.76 times that of DDA and otherwise a negative effect. This study provides a new method and technical support for its industrial application for the reverse flotation of iron ore for the combination of agents in the field of iron ore flotation. And allows for a deeper macro-level understanding of the interaction between the DDA–2-octanol–kerosene ternary mixed agents.
研究领域:
矿物加工工程
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化学工程
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材料科学
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DOI
高影响因子
危险品化学品经营许可证（带存储）