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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高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2020
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IF 2.369
Xiaolin Zhao,Ji Mi,Yitong Dai,Guijin He,Yongsheng Guo,Wenjun Fang
exo-Tetrahydrodicyclopentadiene can serve as both the propellant and coolant in hypersonic vehicles. However, its applications are restricted by the poor properties of ignition and combustion to some extent. Fuel additives such as appropriate alcohols have the ability to overcome these deficits. Research on thermophysical properties of the mixtures composed of exo-tetrahydrodicyclopentadiene and fuel additives can provide important information for the research of fuel additives. In this work, densities and viscosities of the ternary system of exo-tetrahydrodicyclopentadiene (1) + n-decane (2) + iso-butanol (3) and three corresponding binary systems have been measured over the whole composition range in the temperature range from 293.15 to 333.15 K with an interval of 5 K and at pressure p = 0.1 MPa. The values of excess molar volumes (VmE) and viscosity deviations (Δη) of three binary systems and the ternary system were calculated and then fitted to the Redlich–Kister equation and four semi-empirical equations, respectively. The variations of VmE and Δη were explained from the viewpoints of intermolecular forces and structural effects. Furthermore, the Jouyban–Acree model was used to correlate the values of densities (ρ) and viscosities (η) of the studied mixtures with high accuracy.
研究领域:
物理化学
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燃料工程
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高影响因子
ENERGY & FUELS
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2019
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IF 3.021
Zhen-Yi Du,Bin-Bin Zhang,Ting-Sheng Chen,Yuli Betancur,Wen-Ying Li
Isobutanol derived from biomass can serve as a potential renewable candidate for the production of light olefins and aromatics, which are the building blocks to manufacture fuels and chemicals in the petrochemical industry. Dependent upon the product requirements, the product selectivity toward olefins or aromatics can be tuned by adjusting the reaction conditions and the properties of HZSM-5 catalysts. On bare HZSM-5, mild conditions (low temperature, low space time, and low acidity) favored the production of olefins and harsh conditions (high temperature, high space time, and high acidity) were more likely to produce aromatics. Ga was impregnated onto HZSM-5 to enhance the production of aromatics. Unexpectedly, Ga introduction only induced the intertransformation between olefins and aromatics without significantly impacting the selectivity of low-value paraffins. The exchanged Ga sites functioning together with Brønsted acid were identified as active Ga species and strengthened the direct dehydrogenation of C6–C8 olefins. The in situ-generated water from isobutanol dehydration affected the formation of Ga species. This resulted in different promotional effects of Ga on the transformation of isobutanol and isobutene. The reaction pathways were developed on the basis of the catalyst evaluation results, in tandem with an in situ diffuse reflectance infrared Fourier transform spectroscopy study on the intermediates formed during isobutanol transformation. Selectivity of olefins and aromatics from isobutanol transformation can be tuned by adjusting reaction conditions and properties of HZSM-5 catalysts.
研究领域:
催化化学
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能源化学
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高影响因子
Carbon Capture Science & Technology
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2024
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IF 10.4
Wei Wei,Donghui Li,Xiaoxuan Yan,Xujia Mu,Zhiyi Li,Zhijun Liu
In recent years, research into biphasic solvents has become an important direction more efficient control of CO 2 emissions. However, most biphasic absorbents still face challenges such as low cyclic capacity and high viscosity of the rich phase. To develop a novel solvent with enhanced cyclic capacity and reduced regeneration energy consumption, a biphasic solvent consisting of DETA/Isobutanol/H 2 O was proposed. The results demonstrate excellent absorption and desorption performance of the DETA/Isobutanol/H 2 O biphasic solvent, with an absorption capacity ranging from 1.13 to 1.35 mol/mol and a cyclic capacity ranging from 0.61 to 0.84 mol/mol. After conducting 5 times absorption-desorption experiments, the cyclic capacity of DETA/Isobutanol/H 2 O biphasic solvent remained at 0.8 mol/mol. The estimated energy consumption for regeneration, under lean phase load, was calculated to be 2.42 GJ/t CO 2 , which was 42.24 % lower than that of 30wt% MEA aqueous solution (4.19 GJ/t CO 2 ). The DETA/Isobutanol/H 2 O solution exhibits promising potential in terms of absorption-desorption performance and regenerative energy consumption, making it an exceptional CO 2 absorbent.
研究领域:
环境科学
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化学工程
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碳捕集与封存
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高影响因子
MEASUREMENT SCIENCE and TECHNOLOGY
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2022
·Vol. 34
·期 2
·025106
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IF 2.398
Qianchun Zhang,Qin Zhou,Yun Wu,Yanxin Li,Fengling Tian,Shan Tang,Li Jiang
In this study, MIL-53(Al) and Sb2SnO5 were synthesized by hydrothermal and precipitation methods, respectively. The doped MIL-53(Al)/Sb2SnO5 showed excellent catalytic properties, specifically for selectivity and sensitivity for isobutanol (IBN). To assess the catalytic properties of MIL-53(Al)/Sb2SnO5, an IBN gas sensor based on cataluminescence of MIL-53(Al)/Sb2SnO5 was developed, and it demonstrated detection of IBN with high sensitivity, high specificity, fast detection, and good stability. The signal response and recovery time of IBN gas sensor were 0.5 s and 6 s, respectively, and a good linear relation was 0.050–2.5 μg ml−1 (R2 = 0.9956) with a low detection limit of 0.015 μg ml−1. Further, the IBN sensor applied in the detection of real samples had satisfactory recoveries (90.0%–108%) with relative standard deviations of 3.2%–6.7%. The developed sensor based on MIL-53(Al)/Sb2SnO5 has great prospects for the practical detection of IBN gas in the fields of environmental analysis, safety monitoring, etc.
研究领域:
材料科学
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环境分析
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传感技术
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高影响因子
FUEL
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2023
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IF 7.4
Zhenqi Sun,Jialin Tan,Guangping Zhou,Hao Huang,Shaoqu Xie
Using fermentation-based alcohol fuel as a substitute for fossil fuels is one of the means to alleviate the oil crisis and exhaust emissions. However, the low fermentation titer and the formation of azeotropes pose challenges to the separation process. In this paper, sugaring-out was proposed to separate a biofuel, namely isobutanol, as sugars are milder than salts and can be used as the fermentation media. The decrease in the water content is a linear function of the initial sugar concentration so that the isobutanol + water azeotrope was broken. The recovery of isobutanol in the 60 wt% isobutanol system using sucrose, glucose, and fructose reached 96.57 %, 97.01 %, and 97.98 %, respectively. After a two-step surgating-out + salting-out process, the isobutanol was purified to 99.82 wt%. The sugaring-out effects of different sugars were quantized by fitting the natural logarithm of isobutanol solubility with sugar molality in the aqueous phase. Due to the different number of hydroxyl groups in the sugar's structure, the order of the sugaring-out effect is glucose ≈ fructose > sucrose. This article provides detailed data on the sugaring-out separation of the concentrated biobutanol systems, which has a guiding role for the use of sugaring-out effect to separate other biofuels from fermentation broth.
研究领域:
生物化学
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分离技术
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高影响因子
TALANTA
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2018
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IF 4.244
Feifei Meng,Zhenyu Lu,Runkun Zhang,Gongke Li
In this paper, a gaseous sensor was described for detection of iso -butanol on the basis of its strong cataluminescence (CTL) emission on nano-MgO surface. The sensor showed high sensitivity and specificity to iso -butanol with response time less than 1 s and recovery time less than 18 s. A good linearly relationship between CTL intensity and the concentration of iso -butanol was observed in the range of 7.6–3350 mg/m 3 ( r = 0.9992), the limit of detection was 2.5 mg/m 3 . The proposed CTL sensor exhibits good specificity to iso -butanol against other compounds including common alcohols. The possible reaction paths of iso -butanol on the MgO surface were investigated in detail. Results shows that the hydrogen atom abstraction of iso -butanol to form β -R iso following consumption via Waddington mechanism possible is a major reaction channel for CTL emission. The sensor was applied to analyze iso -butanol in spiked samples, satisfactory recoveries were obtained in the range of 96.6–112.8% and the RSDs were 5.0–10.1%, indicating that the proposed sensor is a promising candidate for rapid analysis of iso -butanol.
研究领域:
化学传感器
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分析化学
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DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2018
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IF 2.196
Kai Fan,Feng Zhou,Changxu Chen,Ye Li,Weisong Li,Bo Xiao,Chunjian Xu
Isobaric vapor–liquid equilibria of tert-butanol + chlorobenzene and tert-butyl acetate + chlorobenzene binary systems and the tert-butanol + tert-butyl acetate + chlorobenzene ternary system at 101.33 kPa were measured using a circulation VLE still. The data of binary systems passed the thermodynamic consistency test of the Herington method and the Van Ness point test, and the experimental data of the ternary system also passed the Wisniak consistency test. These binary systems’ VLE data were fitted by the Wilson, nonrandom two-liquid (NRTL), and universal quasichemical (UNIQUAC) activity coefficient models with minor deviations. Furthermore, the obtained binary interaction parameters from the binary systems were used to predict the VLE behavior of the tert-butanol + tert-butyl acetate + chlorobenzene ternary system. The rmsd of vapor and the temperature between the experimental and predicted values for the ternary system were smaller than 0.0304 and 0.81K, respectively. The results indicated that the relative volatility between tert-butanol and tert-butyl acetate obviously increased when adding chlorobenzene as a solvent. Thus, chlorobenzene is a promising solvent for the separation of the tert-butanol and tert-butyl acetate mixture system by extractive distillation.
研究领域:
化学工程
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热力学
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2014
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IF 4.908
Bingxin Huang,Qian Liu,Jürgen Caro,Aisheng Huang
Dense and phase-pure zeolite LTA membranes were hydrothermally synthesized on 3-aminopropyltriethoxysilane (APTES)-modified macroporous Al 2 O 3 tubes without seeding. Pervaporation experiments were conducted for the separation of liquid water/iso-butanol and water/ethanol mixtures to evaluate the separation performances of the zeolite LTA membranes. A water flux of 4.5 kg/m 2 h is obtained at 100 °C for the separation of a 95.0 wt% iso-butanol/5.0 wt% water mixture, and the separation factors of water/iso-butanol are found to be about 3000 for all temperatures and concentrations studied.
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
ACS Catalysis
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2023
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IF 12.9
Nana Gong,Tao Zhang,Minghui Tan,Liyan Wang,Jiaqian Yang,Li Tan,Guohui Yang,Peng Wu,Yingquan Wu,Yisheng Tan
CO hydrogenation to isobutyl alcohol is a promising route for CO transformation to high value-added products. However, the formation mechanism of isobutyl alcohol is complex, and its synthesis requires complex catalysts and harsh reaction conditions, which hinders the identification of active sites. Herein, we efficiently synthesized isobutyl alcohol under mild conditions over a simple Cu–ZrO2 catalyst by decreasing the Cu loading. The space–time yield (STY) of isobutyl alcohol using an optimal CZ-0.11 catalyst was as high as 61.3 g·Lcat–1·h–1 with a CO conversion of 19.2%, far surpassing the STY of the state-of-the-art isobutyl alcohol synthesis (44.6 g·Lcat–1·h–1) under harsh conditions. Decreasing the Cu loading increased the distribution of smaller Cu particles and clarified the structure–activity relationship of Cu–Zr interactions for isobutyl alcohol synthesis. The enhanced Cu–Zr interaction led to the formation of more electron-deficient Cu species on the CZ-0.11 catalyst, which enriched the linearly adsorbed CO on Cu, as demonstrated by in situ diffuse reflectance infrared Fourier-transform spectroscopy. Experimental and theoretical results revealed that coupling of the bicarbonate species on ZrO2 with the linearly adsorbed CO species on electron-deficient Cu clusters promoted the formation of C2 intermediates and finally produced isobutyl alcohol through rapid β-addition. These insights into the active sites for CO hydrogenation to isobutyl alcohol may guide further catalyst designs.
研究领域:
催化化学
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能源化学
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材料科学
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2014
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IF 3.84
Xiangyu Wan,Hongjie Song,Di Zhao,Lichun Zhang,Yi Lv
In the present work, Y-doped metal-organic framework-5 (MOF-5) was synthesized by a simple solvothermal method and characterized by X-ray diffraction, scanning electron microscope , energy dispersive X-ray spectroscopy and nitrogen adsorption–desorption measurements, and firstly used as gas sensor materials based on cataluminescence (CTL). When isobutanol passed through the surface of the material, CTL emission was observed. The luminescence characteristics and optimal parameters were investigated in detail. Under the optimized conditions, the present gas sensor exhibited a linear range of 6.4–80.1 mg L −1 toward isobutanol and with a limit of detection of 3.7 mg L −1 . The designed CTL sensor based on Y-doped MOF-5 shows no or weak sensing performance for foreign common volatile organic compounds. Moreover, compared with pure MOF-5, Y-doped MOF-5 exhibited a better CTL response to isobutanol under the same conditions. This work exploits a new application domain of metal-organic frameworks (MOFs).
研究领域:
材料科学
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化学传感
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DOI
高影响因子
VACUUM
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2023
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IF 4
Xiang-Bing Li,Dan Wang,Cheng Gao,Xiao-le Zhao,Shuang Sun,Ying-ying Ren,Qian-qian Zhang,Jin-bing Zhang,Wen-qiang Dang,Yu-Xiang Zhao,Li-Jun Zhang,Yu-Ping Wang,Li-Min Zhao,Jian-Zhen An,Xue-Fu Kang,Wen-Bo Zhao,Qing Liu
The rough surface Fe 2 O 3 –SnO 2 composite nanorod material was prepared by electrostatic spinning. The morphology and nanostructure of Fe 2 O 3 –SnO 2 composite nanorods were characterized by scanning electron microscopy SEM , nitrogen physical adsorption and X-ray diffraction. Through the analysis of the test results, it can be shown that the Fe 2 O 3 –SnO 2 nanorod samples prepared in this experiment have the advantages of high purity, good crystallinity and large specific surface area. The specific surface area of the sample obtained from the test is 19.27 m 2 /g. According to the gas sensitivity test results of Fe 2 O 3 –SnO 2 nanorods, it can be seen that Fe 2 O 3 –SnO 2 samples have high responsiveness and excellent gas sensitivity selectivity . Various gases were tested in this experiment, and it was found that the sensor has good gas selectivity to isobutanol. At 310 °C, the sensor's response to 100 ppm isobutanol reached 13. This experiment not only prepared Fe 2 O 3 –SnO 2 nanorod sensor with good isobutanol gas sensitivity. And it realized the accurate measurement of continuous isobutanol concentration. In addition, the gas sensitivity mechanism of Fe 2 O 3 –SnO 2 nanomaterials was discussed.
研究领域:
材料科学
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传感器技术
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DOI
高影响因子
危险品化学品经营许可证（带存储）