Journal of Cleaner Production
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2018
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IF 5.651
Chao Guo,Qi Cao,Bokun Chen,Siyu Yang,Yu Qian
Due to the limitation of the existing solvents, the phenols recovery process cannot control phenols concentration to less than 300 mg/L. Therefore, this study presented a synergistic phenols extraction process by using optimal design solvent mixture. The solvent mixture was proposed with the volume ratio of methyl isobutyl ketone (MIBK) to n-pentanol 6:4. The synergistic extraction process was simulated to acquire the parameters with treatment 130 t/h coal gasification wastewater. The removal efficiencies of phenols and treatment costs for the synergistic extraction process had been addressed. The removal efficiency of total phenols can reach to 97.0% after two-stage extraction, and the concentration of total phenols can be decreased from 6273 mg/L to 190 mg/L. Compared with single solvent MIBK, the reduction of phenols emissions is 47.2% by proposed solvent mixture. The operation cost and income of crude phenols showed that synergistic extraction process realized profit about 3.35 CNY/t. Given the removal efficiencies and treatment costs, the solvent mixture (60% MIBK, 40% n-pentanol) is very promising for phenols removal.
研究领域:
环境科学
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化学工程
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产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2018
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IF 2.196
Chao Guo,Yangtong Tan,Yu Qian,Siyu Yang
The synergistic effect for a solvent mixture of 2-pentanone and n-pentanol to extract hydroquinone from aqueous solution was investigated. Liquid–liquid equilibria data for the quaternary (2-pentanone + n-pentanol + hydroquinone + water) system were measured under atmospheric pressure at 298.2 K, using various compositions of solvent mixture. The tie-line length was calculated to estimate the size of the immiscibility zone. The distribution coefficient and separation factor were calculated to evaluate the extraction efficiencies. The experimental data were correlated with NRTL and UNIQUAC models, and the corresponding binary interaction parameters were obtained.
研究领域:
化学工程
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物理化学
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产品关联
DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
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2025
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IF 2.5
Li Lingyu,Ma Qian,Zhao Dongheng,Zhang Huayushuo,Li Bolong
Recently, the development of an n-pentane-sensing product has always been plagued by the lack of suitable inorganic material with good gas-sensing response and selectivity at low operating temperatures. In this work, Ti-MIL-125-induced one-dimensional tubular In 2 O 3 /TiO 2 heterostructures have been fabricated by a facile electrospinning method and a subsequent heat-treatment process. Obvious morphological evolution from a fibrous to a tubular shape with the presence of In 2 O 3 -TiO 2 heterojunctions can be adjusted by varying the added amount of the Ti-ML-125 component. Compared with pure In 2 O 3 , the optimal In 2 O 3 /TiO 2 composites exhibit a blue-shifted energy band (2.52 eV) and an increased specific surface area (227.70 m 2 /g), as well as the enhanced gas-sensing performance on various concentrations of n-pentane. For example, In 2 O 3 /TiO 2 -3% can not only display excellent long-term stability and humidity stability but also has a high response of 670–100 ppm n-pentanol at 50°C, much larger than that of pure In 2 O 3 (50) at 150°C. Significantly, In 2 O 3 /TiO 2 -3% can still reach the high response of 197–100 ppm n-pentanol at room temperature. According to density functional theory (DFT) calculations, the enhanced gas-sensing mechanism is mainly attributed to the combination of the distinctly increased surface active sites through the regulation of morphology and the introduction of effective In 2 O 3 -TiO 2 heterojunctions, which can be beneficial to improving the surface adsorption/desorption characteristics and the electron transport between n-pentanol and the sensing material interface. Graphical
研究领域:
材料科学
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传感器技术
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
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2024
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IF 5.1
Xue Ma,Xin Dong,Baosheng Li,Qiuyue Zheng,Rui Li,Chaobo Huang,Lihua Huo,Xianfa Zhang,Xiaoli Cheng,Yingming Xu
n-Pentanol, a commonly used Volatile organic compounds (VOCs) in industry, is harmful to the environment security and human health. Thus, it is necessary to develop n-pentanol sensors. Herein, spherical (ZTO-S), cubic (ZTO-C) and pseudo-cubic (ZTO-PC) ZnSnO 3 were obtained by changing the ratio of solvent in hydrothermal/solvothermal process. By contrast, the ZTO-PC sensor had a high sensitivity of 135.2 to 100 ppm n-pentanol at 170 °C, a short response time of 0.8 s, and a low detection limit of 10 ppb. Meanwhile, the ZTO-PC sensor displayed superior reproducibility, good humidity resistance and excellent long-term stability. The outstanding sensing performance response of the ZTO-PC sensor is attribute to its high surface adsorbed oxygen content, fast electron mobility and good conductivity, providing abundant active sites and effective gas adsorption platform. In addition, the mechanism of the ZTO-PC sensor for n-pentanol was studied by XPS , GC-MS, and in-situ DRIFTS . After contact with ZnSnO 3 , n-pentanol was first oxidized to n-pentanal and then decomposed into CO 2 and H 2 O. This work well-designed three types of ZnSnO 3 through morphological engineering, providing a hopeful strategy for improving the gas sensitive performance.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
FUEL
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2020
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IF 5.578
Xiaochen Wang,Ying Wang,Yuanqi Bai
Experiments were performed on a high pressure common-rail diesel engine fueled with D100 (diesel fuel), DP15 (15% n-pentanol and 85% diesel, v/v), DP30 (30% n-pentanol and 70% diesel, v/v), DP30E1 (DP30 and 1000 ppm EHN) and DP30E2 (DP30 and 2000 ppm EHN), respectively. Particulates were sampled from the engine exhaust tailpipe and further analyzed with transmission electron microscope (TEM), Raman spectroscopy (RS) and thermogravimetric analysis (TGA). Results showed that an increase in soot oxidation reactivity was observed with increasing n-pentanol concentration in diesel/n-pentanol mixtures. This trend was in line with the poorer structural ordering of soot particles generated from blended fuels by both TEM and RS analyses. Regarding the impact of EHN addition to DP30 fuel, the soot oxidation reactivity decreased as the fuel was changed from DP30 to DP30E1, and then increased as the fuel was changed from DP30E1 to DP30E2. Notably, the soot from DP30 + EHN additive was easier to be oxidized than that from DP30. Similarly, the trends in soot oxidation reactivity with EHN additive can qualitatively capture the variations in soot nanostructure . The correlation between soot reactivity and nanostructure in this study was nonlinear, which infers that soot oxidation reactivity would be also influenced by other features like active surface area and surface functional group. It can be suggested that the application of DP30 would significantly affect the regeneration performance of diesel particulate filter (DPF); when the baseline fuel is DP30, the impacts of EHN additives on regeneration performance of DPF are relatively slight.
研究领域:
环境科学
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能源工程
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2021
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IF 7.46
Hongtao Wang,Yueyue Li,Chenchang Wang,Yuan Li,Jihao Bai,Yueying liu,Linsheng Zhou,Fengmin Liu,Kengo Shimanoe,Geyu Lu
As one of the most promising “next generation” alcohol fuels, n-pentanol brings convenience to our lives as well as challenges. Realizing real-time monitoring of n-pentanol is important to the health of workers in chemical plants. In this work, a series of Au nanoparticles functionalized ZnO nanorods were prepared by a facile one-step solvothermal method. The electronic sensitization and chemical sensitization of Au nanoparticles regulate the thickness of initial depletion layer of ZnO nanorods and increase the amount of adsorbed oxygen species on the surface. The gas-sensing results showed that 2 mol% Au nanoparticles functionalized ZnO nanorods exhibited the highest response of 71.8 to 4 ppm n-pentanol at 260 °C, and showed much higher response than other various saturated monohydric alcohols with different carbon chain lengths. Moreover, the sensor possessed ultra-fast response speed (1 s), excellent stability, and a certain ability of moisture resistance. The sensor was heated at 350 °C to promote the desorption of n-pentanol. The surface depletion layer model and energy band theory were used to explain the enhanced gas-sensing performance. This work provides a suitable candidate for real-time monitoring of n-pentanol in chemical plants.
研究领域:
材料科学
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传感器技术
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纳米材料
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环境监测
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职业健康
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DOI
高影响因子
Thermal Science and Engineering Progress
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2024
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IF 5.1
Feibin Yan,Wenjun Zhong,Tamilselvan Pachiannan,Sicheng Lai,Zhixia He,Qian Wang
N -pentanol exhibits promising potential as a sustainable and eco-friendly biomass energy source. However, certain challenges such as ignition difficulty and unstable combustion exist. This study investigates the influence of low-temperature auto-ignition of n -pentanol/HCB (Hydrogenated Catalytic Biodiesel) blends on ignition and combustion characteristics and evaluates the correlation between low-temperature oxidation and second-stage ignition delay. Results show a linear positive correlation between the HCB content in n -pentanol and its low-temperature oxidation reactivity. The stronger the low-temperature oxidation activity of the blends, the shorter the second-stage ignition delay of blends. When the HCB content in blends is below 40 %, the low-temperature oxidation rate initially increases and then decreases. However, the low-temperature oxidation rate increases again when the HCB content exceeds 40 %. Moreover, the relationship between the initial CO 2 generation rate and the HCB blending ratio follows an Exp exponential function under different critical compression ratios. Beyond 43.7 % HCB, an acceleration in the high-temperature combustion rate owing to an increase in the low-temperature oxidation rate again. In addition, the minimum ignition limit of n -pentanol/HCB blends was identified with 40 % HCB blends closely resembling diesel conditions and 50 % HCB blends showing a lower ignition limit, characterized by a critical temperature and pressure of 517.3 K and 8.66 bar, respectively. Furthermore, two distinct conditions for the minimum ignition boundary region of n -pentanol/HCB blends were defined, offering practical insights. In summary, a blend with a 50 % HCB ratio provides a promising solution for the low-temperature ignition and stable combustion of n -pentanol, addressing the challenges of simultaneous use in internal combustion engines.
研究领域:
能源化学
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燃烧科学
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可再生能源
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产品关联
DOI
高影响因子
ENERGY CONVERSION AND MANAGEMENT
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2018
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IF 6.377
Mingzhang Pan,Rong Huang,Jinyang Liao,Tiancheng Ouyang,Zeyuan Zheng,Delin Lv,Haozhong Huang
The n -pentanol/diesel dual-fuel coupled with EGR (exhaust gas recirculation) technology could simultaneously reduce soot and nitrogen oxide (NO X ) emissions discharged from the compression ignition engine. However, under high EGR rates, the low cetane number of the n -pentanol/diesel dual fuel resulted to combustion deceleration behavior. Because the combustion rate has a significant influence on the thermal efficiency of the engine, it was necessary to add 2-ethylhexyl nitrate (EHN) as a cetane improver to fuel mixtures to ensure that the n -pentanol/diesel fuel has appropriate combustion characteristics. In this study, it was attempted to investigate the performance and emission of a four-cylinder, turbocharged diesel engine with EHN fueled with n -pentanol/diesel blends at varying EGR rates. The five tested fuels included pure diesel (P0), and a mixture of 50% n -pentanol and 50% diesel (P50). Moreover, EHN was added to P50 at ratios of 0.5, 1, and 2%. The results showed that P50 could reduce soot emission, nucleation and accumulation mode particles. However, the burning speed and brake thermal efficiency (BTE) were notably reduced, and emissions of hydrocarbon (HC) and carbon monoxide (CO) significantly increased. With the EGR technology, NO X emission was significantly reduced. When EHN was added to P50, engine ignition delay was shortened, BTE increased, and HC and CO emissions were substantially reduced. The use EGR technology combined with n -pentanol and EHN simultaneously reduced soot and NO X emissions, and only slightly reduced BTE.
研究领域:
能源工程
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环境科学
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机械工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）