An Alternate Model to Correlate Natural Gas Viscosity Based on Corresponding States and Lennard-Jones Averaged Intermolecular Potential Field
作者：
Yang, Xiaohong* ;Zhu, Weiling
期刊：
Arabian Journal for Science and Engineering ,2019年44(12):10581-10591 ISSN：2193-567X
通讯作者：
Yang, Xiaohong
作者机构：
[Yang, Xiaohong; Zhu, Weiling] Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Yang, Xiaohong] W;Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
关键词：
Viscosity;Model;Temperature;Density;Absolute percent deviation
摘要：
The viscosity of natural gas has considerable theoretical and practical significance in the design and operation of gas transportation, production, and processing. In order to quickly and cheaply obtain the viscosity data of natural gas, an alternate predictive model was developed based on corresponding states and Lennard-Jones averaged intermolecular potential field. Then, the accuracy of the model was assessed with 2389 experimental data points from 15 natural gas specimens after 2000, which sat in temperature and pressure ranges: 241–454K, 0.1–140MPa. The result shows that the averaged absolute percent deviation was less than 2.1%, wherein for the 793 data points measured via the same device within 0.5% relative uncertainty, the averaged and maximum absolute percent deviation were ≤ 0.72% and 2.7%. While comparing against ten existing models, the new model had the advantages of simplicity, accuracy, convenience, and theoretical background. In the natural gas viscosity analysis, calculation, and design, the use of the new model is recommended. © 2019, King Fahd University of Petroleum & Minerals.
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英文
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Approaching averaged binary potential field from compressibility factor
作者：
Yang, Xiaohong* ;Zhu, Weiling
期刊：
Journal of Molecular Liquids ,2019年280:367-373 ISSN：0167-7322
通讯作者：
Yang, Xiaohong
作者机构：
[Yang, Xiaohong; Zhu, Weiling] Wuhan Polytech Univ, Dept Chem & Environm, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Yang, Xiaohong] W;Wuhan Polytech Univ, Dept Chem & Environm, Wuhan 430023, Hubei, Peoples R China.
关键词：
Polynomials;Analytical expressions;Chebyshev polynomials;Compressibility factor;Intermolecular distance;Intermolecular interactions;Intermolecular potentials;Linear combinations;Potential field;Compressibility
摘要：
This paper developed a novel approach to determine averaged binary potential field (ABPF) from compressibility factor. After the concepts of intermolecular potential field and idealized symmetric fluid were introduced, relevant thermodynamical analytical expressions for the fluid were derived. Especially, a new equation relating the compressibility factor with the ABPF was obtained. And then, the obtained equation was applied to five typical fluids: argon, methane, methanol, benzene and water, which covers spherical, nonpolar and polar molecules. It was found that all the ABPFs of the five fluids exhibited a combination of the potential of soft sphere ball and/or the potential of standard Lennard-Jones’ form taught in textbooks, and can be accurately fitted to the linear combination of odd Chebyshev polynomials up to the fifth degree. These results have not only shown the fruitfulness and application value of the approach, but also suggested an alternative way to explore the intermolecular interactions in the averaged field's manner. © 2019 Elsevier B.V.
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英文
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The equation of state of symmetric extended Lennard-Jones fluids
作者：
Yang, Xiaohong* ;Zhu, Weiling
期刊：
Physica A-Statistical Mechanics and its Applications ,2019年533:122090 ISSN：0378-4371
通讯作者：
Yang, Xiaohong
作者机构：
[Yang, Xiaohong; Zhu, Weiling] Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Yang, Xiaohong] W;Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
关键词：
Averaged intermolecular potential field;Equation of state;Extended Lennard-Jones potential;Symmetric fluid
摘要：
This paper developed the conceptual model of symmetric extended Lennard-Jones fluid based on an extended Lennard-Jones potential function. Therein, important relationships between averaged intermolecular potential field (AIPF) and thermodynamic properties were presented, in which the equation of state was included. These formulascan not only predict the p-V-T properties of argon, nitrogen, carbon monoxide and methane that are representatives of spherical, polar and non-polar molecular fluids in acceptable accuracy, but also physically interpret the p-V-T properties from the AIPF. Obtained results have theoretical significance and can serve as reference or base in the analysis and computation of the p-V-T properties of simple fluids. © 2019 Elsevier B.V.
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英文
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Treatment of Wastewater Containing Nickel by Electrocoagulation Process Using Photovoltaic Energy
作者：
Zhang, Shunxi* ;Yang, Xiaohong;Cheng, Qunpeng;Wang, Mei;Hu, Chun;...
期刊：
ENVIRONMENTAL ENGINEERING SCIENCE ,2018年35(5):484-492 ISSN：1092-8758
通讯作者：
Zhang, Shunxi
作者机构：
[Cheng, Qunpeng; Li, Jianfen; Zhang, Shunxi; Chai, Bo; Wang, Mei; Hu, Chun; Yang, Xiaohong] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Zhang, Shunxi] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
关键词：
electrocoagulation;heavy metal;photovoltaic energy;renewable energy;wastewater containing nickel
摘要：
Abstract To avoid deficiencies of traditional electrocoagulation process, electrocoagulation process powered by renewable photovoltaic energy has been directly used to remove nickel from wastewater. Results show that under the solar irradiation intensity (SII) of 750 ± 30 W/m2, aluminum electrode has higher nickel removal efficiency (NRE) than graphite and titanium, and its NRE is nearly 100% in 40 min. An optimum distance of 20 mm is determined for the electrode gap. NRE in 40 min nearly decreases from 99.6% to 78.8% when initial Ni2+ concentration increases from 100 to 300 mg/L. Under the SII of 610 ± 40 W/m2, solution containing SO42− of 3.4 mmol/L gets the highest NRE, while wastewater containing Cl− of 6.8 mmol/L has the lowest. Furthermore, effluent, including SO42− of 1.7 and Cl− of 3.4 mmol/L, shows a higher NRE too. NRE in 40 min increases when output power of the photovoltaic panel changes from 30 to 90 W, but doesn't show an obviously increasing tendency when the power improves further to 120 W. NRE for a fine day is the highest and is 100% in 40 min. However, its energy utilization efficiency is the lowest, but the saving cost is the most. In addition, MAl, Ct, and Ca sharply increase with the SII enhancing. Therefore, for some enterprises or regions with serious environmental burden and insufficient economic input, this process will provide an effective alternative approach to remove heavy metals from wastewater in a renewable and low-cost way.
语种：
英文
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A new model for the accurate calculation of natural gas viscosity
作者：
Xiaohong Yang* ;Shunxi Zhang;Weiling Zhu
期刊：
Natural Gas Industry B ,2017年4(2):100-105 ISSN：2352-8540
通讯作者：
Xiaohong Yang
作者机构：
[Yang X.; Zhang S.; Zhu W.] School of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan, Hubei 430023, China
通讯机构：
[Xiaohong Yang] S;School of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan, Hubei 430023, China
关键词：
Natural gas;Viscosity;New model;Temperature;Density;Composition;Kinetic theory of gases;Relative deviation;Accurate calculation
摘要：
Viscosity of natural gas is a basic and important parameter, of theoretical and practical significance in the domain of natural gas recovery, transmission and processing. In order to obtain the accurate viscosity data efficiently at a low cost, a new model and its corresponding functional relation are derived on the basis of the relationship among viscosity, temperature and density derived from the kinetic theory of gases. After the model parameters were optimized using a lot of experimental data, the diagram showing the variation of viscosity along with temperature and density is prepared, showing that: ① the gas viscosity increases with the increase of density as well as the increase of temperature in the low density region; ② the gas viscosity increases with the decrease of temperature in high density region. With this new model, the viscosity of 9 natural gas samples was calculated precisely. The average relative deviation between these calculated values and 1539 experimental data measured at 250–450 K and 0.10–140.0 MPa is less than 1.9%. Compared with the 793 experimental data with a measurement error less than 0.5%, the maximum relative deviation is less than 0.98%. It is concluded that this new model is more advantageous than the previous 8 models in terms of simplicity, accuracy, fast calculation, and direct applicability to the CO2 bearing gas samples. © 2017 Sichuan Petroleum Administration
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英文
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The performance of a waterborne zinc-rich coating from sodium silicate solution catalyzed by ammonium acetate
作者：
Yang, Xiaohong* ;Zhu, Weiling
期刊：
Protection of Metals and Physical Chemistry of Surfaces ,2017年53(2):299-305 ISSN：2070-2051
通讯作者：
Yang, Xiaohong
作者机构：
[Yang, Xiaohong; Zhu, Weiling] Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Yang, Xiaohong] W;Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Peoples R China.
摘要：
Through general property tests, rheological measurements, SEM observations and weight changes after immersion, electrochemical methods and water vapor transmission tests, a waterborne zinc-rich coating from sodium silicate solution catalyzed by ammonium acetate was characterized. Results showed that the formula catalyzed by ammonium acetate overcame the poor water resistance of other non-catalyzed coatings, while binding the zinc powder in the film. The zinc-rich film had the basic features required for a zinc-rich primer to be useful and was electrochemically cathodically protective during tests. The acetate anion from ammonium acetate resulted not only in little early corrosion while catalyzing the formation of zinc silicate before cure but also stronger corrosion protection during the immersion test on the cured film. The velocity of water vapor transmission and the amount of acetate anions present decreased with time until a stable value was achieved after approximately 6 days.
语种：
英文
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An approach to the averaged intermolecular potential field of methane from viscosity
作者：
Zhang, Ailian;Yang, Xiaohong* ;Zhang, Shunxi
期刊：
Chemical Physics Letters ,2017年682:82-86 ISSN：0009-2614
通讯作者：
Yang, Xiaohong
作者机构：
[Zhang, Shunxi; Zhang, Ailian; Yang, Xiaohong] Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Yang, Xiaohong] W;Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Hubei, Peoples R China.
关键词：
Fluidic system;Intermolecular potential;Methane;Potential field;Viscosity
摘要：
A novel approach to averaged intermolecular potential field (AIPF) of methane from viscosity was developed. Using symmetric molecular interaction approximation and Maxwell-Boltzmann distribution function of velocity, equations relating the AIPF and viscosity have been derived. Applying the equations to methane, good agreements were found between high quality viscosity data and the equations via fitting method. Then a formula for methane's AIPF as a function of temperature and density was determined. Obtained results not only give a new method to estimate the AIPF for fluidic system, but also may form a novel base to study the viscosity of other alkane mixtures. © 2017 Elsevier B.V.
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英文
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Synthesis and characterization of an IrO2-Fe2O3 electrocatalyst for the hydrogen evolution reaction in acidic water electrolysis
作者：
Yang, Xian;Li, Yande;Deng, Li;Li, Wenyang;Ren, Zhandong;...
期刊：
RSC Advances ,2017年7(33):20252-20258 ISSN：2046-2069
通讯作者：
Zhu, Yuchan
作者机构：
[Deng, Li; Zhu, Yuchan; Yang, Xian; Li, Yande; Li, Wenyang; Ren, Zhandong; Yang, Xiaohong; Yang, Ming] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Zhu, Yuchan] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
摘要：
Water electrolysis is one of the most promising processes for a hydrogen-based economy, so the development of highly active, durable, and inexpensive catalysts for the hydrogen evolution reaction (HER) is very important. IrO<inf>2</inf>is known to be one of the most active catalysts for the oxygen evolution reaction (OER) in a PEM electrolyzer, but the HER activity of IrO<inf>2</inf>is rarely studied because of its low cathodic current compared to platinum. Herein, an IrO<inf>2</inf>-Fe<inf>2</inf>O<inf>3</inf>composite oxide was prepared by a thermal decomposition method. The physical and electrochemical characterization of the material was achieved by scanning electron microscopy (SEM), X-ray fluorescence (XRF), X-ray diffraction (XRD), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Compared to that of IrO<inf>2</inf>, the CV curves of the IrO<inf>2</inf>-Fe<inf>2</inf>O<inf>3</inf>electrode reveal that hydrogen is more easily adsorbed on the surface, which would lead to the H underpotential deposition (H-UPD) redox current increasing significantly. Therefore, the IrO<inf>2</inf>-Fe<inf>2</inf>O<inf>3</inf>electrode exhibits higher HER activity than that of the IrO<inf>2</inf>electrode in 0.5 M H<inf>2</inf>SO<inf>4</inf>solution as shown by linear sweep voltammetry (LSV). It is attributed to the electronic structure modification of IrO<inf>2</inf>and synergetic effect between Ir and Fe in the IrO<inf>2</inf>-Fe<inf>2</inf>O<inf>3</inf>electrode. In addition, the Tafel slope of 36.2 mV dec<sup>-1</sup>suggests that the mechanism for the IrO<inf>2</inf>-Fe<inf>2</inf>O<inf>3</inf>-catalyzed HER is Volmer-Heyrovsky. ©The Royal Society of Chemistry.
语种：
英文
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PBL-LBL相结合教学模式在材料化学课程教学中的应用探索
作者：
柴波;高新蕾;王婷婷;朱玉婵;杨晓鸿
期刊：
教育教学论坛 ,2017年(11):165-166 ISSN：1674-9324
作者机构：
武汉轻工大学 化学与环境工程学院,武汉,430023;[王婷婷; 柴波; 杨晓鸿; 高新蕾; 朱玉婵] 武汉轻工大学
关键词：
PBL-LBL教学模式;材料化学;创新
摘要：
针对《材料化学》课程的特点,在课程教学中实施PBL-LBL相结合的教学模式,探讨了实施该教学模式的必要性及具体实施过程,并对PBL—LBL相结合教学模式中应注意的问题进行探索。
语种：
中文
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《涂料化学及防腐技术》课程教学实践
作者：
杨晓鸿;柴波
期刊：
广东化工 ,2017年44(12):274-275 ISSN：1007-1865
作者机构：
武汉轻工大学化学与环境工程学院,湖北武汉,430023;[柴波; 杨晓鸿] 武汉轻工大学
关键词：
涂料化学;防腐技术;学生中位;教学实践
摘要：
本文介绍了涂料化学及防腐技术课程的教学目标、课程内容、课程特色、教学方法、教学效果等内容,采用丰富多彩的教学手段,开展学生中位的教学实践,明显地提高了学生的学习兴趣,增加了知识,强化了理论与实际相结合的重要性,提高了实际能力、独立思考能力、和创造创新能力,获得了预期的教学效果.
语种：
中文
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A novel approximation to the relation between reduced molecular potential of C1-3 hydrocarbon gases and their compressibility factor
作者：
Yang, Xiaohong* ;Zhang, Shunxi;Zhu, Weiling
期刊：
Petroleum Science and Technology ,2016年34(21):1755-1760 ISSN：1091-6466
通讯作者：
Yang, Xiaohong
作者机构：
[Zhang, Shunxi; Yang, Xiaohong; Zhu, Weiling] Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Yang, Xiaohong] W;Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Peoples R China.
关键词：
Compressibility;Distribution functions;Exponential functions;Hydrocarbons;Temperature;Compressibility factor;Curve shape;Hydrocarbon gas;Intermolecular interactions;Molecular potential;Potential wells;Compressibility of gases
摘要：
Based on symmetric intermolecular interactions approximation, a novel relation between compressibility (Z) factor of hydrocarbon gases and molecular potential has been developed. The relation indicated that the Z factor was an exponential function of the depth of potential well, which was derived to be proportional to the molecular potential. By this relation, the reduced molecular potentials of methane, ethane, and propane were determined at the same temperature. The obtained reduced potentials appeared the standard L-J curve shape, suggesting the rationality and success of this approximation and showing the academic significance of the relation in estimating molecular potential. © 2016 Taylor & Francis Group, LLC.
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英文
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Characterizing and Modeling the Rheological Performances of Potassium Silicate Solutions
作者：
Yang, Xiaohong* ;Zhang, Shunxi
期刊：
Journal of Solution Chemistry ,2016年45(12):1890-1901 ISSN：0095-9782
通讯作者：
Yang, Xiaohong
作者机构：
[Zhang, Shunxi; Yang, Xiaohong] Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Yang, Xiaohong] W;Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Peoples R China.
关键词：
Potassium silicate solution;Rheology;Concentration;Temperature
摘要：
By using rheological measurements, a quantitative modeling method, as well as fitting of data, the main rheological properties of potassium silicate solutions (PSS) were determined. The results show that the steady state shear viscosities of PSS rapidly increase with concentration in the tested domain and molar ratios. However, they decrease with temperature from 15 to 60°C. The newly improved Krieger–Dougherty expression, which inherited the principal properties of both the Krieger–Dougherty and the Kaminsky equations, can describe the measured viscosities with respect to concentration. The blends of potassium and sodium silicate solutions reveal a positive synergistic interaction for the viscosity at fixed concentration and molar ratio. The storage and loss moduli of PSS principally increased with angular frequency, and it was possible to fit to the discrete relaxation spectrum model of these two quantities with relative error less than 3.6%. © 2016, Springer Science+Business Media New York.
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英文
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A new model for the viscosity of liquid short chain (C1–C4) 1-alcohols over density and temperature based on Lennard-Jones potential
作者：
Yang, Xiaohong* ;Zhu, Weiling
期刊：
Journal of Molecular Liquids ,2016年224:234-239 ISSN：0167-7322
通讯作者：
Yang, Xiaohong
作者机构：
[Yang, Xiaohong; Zhu, Weiling] Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Yang, Xiaohong] W;Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Peoples R China.
关键词：
Alcohols;Chains;Density (specific gravity);Exponential functions;Models;Temperature;Viscosity;Viscosity of liquids;1-Alcohols;Data points;Novel equation;Physical meanings;Lennard-Jones potential
摘要：
This work attempts to develop a new model for the viscosity of liquid short chain (C1–C4) 1-alcohols based on the Lennard-Jones potential. The model derived a novel equation as the mixed power and exponential function of density and temperature. When the Lennard-Jones potential took the (11.91-6) pattern, the derived equation was found in good agreement with reliable experimental data reported in literature. The R squared for the equation fitting to the 279 gathered data points that distributed in the ranges: 223.15–476.2K and 0.1–472.8MPa, was ≥0.9973. Comparing to other famous theoretical models mentioned, the new model was accurate, simpler, and had theory background and physical meanings for the main terms. All these advantages suggested the success of the developed new model and showed its practical application potentials in the industry associating the alcohols. © 2016 Elsevier B.V.
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英文
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天然气黏度精确计算新模型
作者：
杨晓鸿;张顺喜;朱薇玲
期刊：
天然气工业 ,2016年36(12):113-118 ISSN：1000-0976
作者机构：
[杨晓鸿; 张顺喜; 朱薇玲] 武汉轻工大学化学与环境工程学院, 湖北, 武汉, 430023
关键词：
天然气;黏度;新模型;温度;密度;组成;气体分子运动论;相对偏差;精确计算
摘要：
天然气黏度是基础而重要的参数,在天然气开采、输送和加工等领域有着重要的理论和应用价值。为了高效、低成本地获得精确的天然气黏度数据,基于气体分子运动论所得黏度、温度和密度关系,建立了计算天然气黏度的新模型和相应的函数关系式,用大量的实验数据对模型参数进行优化后,给出了天然气黏度随温度和密度的变化曲面图。研究结果表明:①天然气黏度随密度以及低密度区域温度的升高而升高;②天然气黏度在高密度区域随温度的升高而降低。新模型精确地预测了9个天然气样本的黏度数据,其计算值与1 53个处于250 ~ 450 K、0.1 ~ 140.0 MPa 区间的实验数据相比,平均相对偏差不超过1.9% ;其中,与测量误差小于0.5% 的793个实验数据相比,最大相对偏差不超过0.98%。结论认为,与以前的8种计算模型相比,新模型具有方法简单、结果精确、计算快速、可直接计算含有二氧化碳天然气样本的优点。
语种：
中文
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Effect of meteorological conditions on pollutants removal and enhancing approaches during photovoltaic energy direct application: Electrokinetic remediation of soil containing Cr(VI) as an example
作者：
Zhang, Shunxi;Yang, Xiaohong;Cheng, Xianzhong;Hu, Chun;Chai, Bo;...
期刊：
International Journal of Electrochemical Science ,2016年11(7):5753-5765 ISSN：1452-3981
通讯作者：
Mei, Yunjun
作者机构：
[Cheng, Xianzhong; Li, Jianfen; Mei, Yunjun; Zhang, Shunxi; Chai, Bo; Hu, Chun; Yang, Xiaohong] Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Mei, Yunjun] W;Wuhan Polytech Univ, Sch Chem & Environm Engn, Wuhan 430023, Peoples R China.
关键词：
Enhancing approaches;Meteorological conditions;Photovoltaic energy;Pollutants removal;Soil containing Cr(VI)
摘要：
To explore the effect of meteorological conditions on pollutants removal and enhancing removal efficiency approaches in weak solar irradiation intensity during photovoltaic energy direct application, electrokinetic remediation of soil containing Cr(VI) was investigated as an example. The results show that meteorological conditions have a significant effect on pollutants removal, and Cr(VI) removal efficiency for a sunny day is the highest. Cr(VI) concentration and total Cr concentration in the different layer suggest that chromium in soil is electromigrated and accumulated near the anodic region. Total Fe concentration implies that the anodic product Fe2+ is migrated into the cathode. Energy conversion efficiency for a sunny day is the highest and is 10.4%. However, energy utilization efficiency for an overcast day is the highest, and Em and Ev are 24.1kWh/kg and 38.3kWh/m3, respectively. In weak solar irradiation intensity of 37±3.5W/m2, the parallel connection of photovoltaic panels is a feasible approach to enhance pollutants removal, and in 30min Cr(VI) removal efficiency for four panels can rise to 79.8% from 64.3% for only one panel. The extending reactive time is also a feasible way, and removal efficiency for one panel can increase from 64.3% to 80.7% as time prolonging from 30 min to 60 min. © 2016 The Authors.
语种：
英文
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A theoretical model for the density and temperature dependent viscosity of hydrocarbon gases
作者：
Yang, Xiaohong* ;Zhu, Weiling
期刊：
Petroleum Science and Technology ,2016年34(8):765-770 ISSN：1091-6466
通讯作者：
Yang, Xiaohong
作者机构：
[Yang, Xiaohong; Zhu, Weiling] Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Yang, Xiaohong] W;Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Peoples R China.
关键词：
Exponential functions;Gas industry;Hydrocarbons;Statistical mechanics;Viscosity;Hydrocarbon gas;Literature data;Power functions;Temperature dependent viscosity;Theoretical modeling;Density of gases
摘要：
ABSTRACT: Based on statistical mechanics, a theoretical model for the density and temperature-dependent viscosity of hydrocarbon gas has been developed. In the model, the averaged intermolecular attractive potential was suggested as a power function of density, and the viscosity was derived as an exponential function of the potential. In the evaluation, the derived equation was found in good agreement with reliable literature data with averaged and maximum absolute percent deviations of 0.34% and 0.98%, and comprehensively performed better than several selected methods. The performances showed the success of the theoretical model, and revealed application potentials in the natural gas industry. © 2016 Taylor & Francis Group, LLC.
语种：
英文
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The performance of biodegradable tung oil coatings
作者：
Yang, Xiaohong* ;Zhang, Shunxi;Li, Wenyang
期刊：
Progress in Organic Coatings ,2015年85:216-220 ISSN：0300-9440
通讯作者：
Yang, Xiaohong
作者机构：
[Zhang, Shunxi; Yang, Xiaohong; Li, Wenyang] Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Yang, Xiaohong] W;Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Peoples R China.
关键词：
Biodegradation;Tung oil;Coating;Catalyst
摘要：
Using immersion tests, viscosity measurements, FTIR and SEM, as well as biodegradation tests, biodegradable tung oil coatings were investigated. Results showed that the curing times for different formulae decreased as the amount of catalyst increased. During the curing process, there was an initial induction period where the viscosity remained more or less the same, and after a certain time, a sharp increase in viscosity was observed. The steady viscosity increased with time, revealing a continuous autoxidation process. Microorganisms in the soil attacked the surfaces of the tung oil films either uniformly on the whole plate or at specific weak points, leading to decreased volume, blurring of the small humps as well as holes. The weak point on the crosslinked chain was located at the carbonyl-containing groups, where chemical biodegradation occurred more easily and faster. (C) 2015 Elsevier B.V. All rights reserved.
语种：
英文
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A novel theoretical approach to the temperature–viscosity relation for fluidic fuels
作者：
Yang, Xiaohong* ;Li, Wenyang
期刊：
Fuel ,2015年153(Aug.1):85-89 ISSN：0016-2361
通讯作者：
Yang, Xiaohong
作者机构：
[Yang, Xiaohong; Li, Wenyang] Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Peoples R China.
通讯机构：
[Yang, Xiaohong] W;Wuhan Polytech Univ, Dept Chem & Environm Engn, Wuhan 430023, Peoples R China.
关键词：
Fluidic fuel;Viscosity;Temperature;Interaction potential;Momentum transfer
摘要：
Viscosity is a first and foremost function both for theory and application. By approximating the interaction potential of molecule in fluidic fuel as constant and proposing a new method to calculate the momentum transfer by means of the radius of averaged volume per molecule, an equation of viscosity versus temperature was derived, which were found in good agreement with a lot of data from gaseous to liquid fuels by the curve fit. The equation also predicted that the viscosity initially decreased with temperature and then slowly increased in the high temperature region. When using it as correlation equation for the dependence of viscosity on temperature, it was able to cover more fluids from gaseous to liquid fuels. (C) 2015 Elsevier Ltd. All rights reserved.
语种：
英文
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RuO_2-SnO_2阳极电催化活性及氧化电解水制备
作者：
李文阳;任占冬;朱玉婵;杨晓鸿;全姗姗;...
期刊：
功能材料 ,2015年46(19):19118-19125 ISSN：1001-9731
通讯作者：
Ren, Zhandong(renzhandong@163.com)
作者机构：
[杨晓鸿; 柴波; 朱玉婵; 任占冬; 李文阳; 高洁; 陈红梅; 全姗姗] School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, China
通讯机构：
[Ren, Z.] S;School of Chemical and Environmental Engineering, China
关键词：
氧化电解水;电解效率;有效氯;次氯酸;使用寿命
摘要：
氧化电解水是一种高效、环保的杀菌剂,在医疗卫生、食品安全和农业生产方面有着广泛的应用.但目前氧化电解水制备过程中,缺少对关键电极材料的研究,没有建立电极材料与杀菌活性因子(HClO)之间的关系.采用热分解法制备 RuO 2-SnO 2氧化物合金电极.通过 XRD 表征可以看出其晶型为典型的金红石型结构,进一步通过循环伏安(CV)表征证明其表面为典型的 RuO 2电化学特征,没有 SnO 2电化学特征.在此基础上,利用线性伏安(LSV)技术分别考察了 RuO 2-SnO 2的析氯极化曲线和析氧极化曲线,研究表明电流密度为70 mA/cm2时,RuO 2-SnO 2电极的析氯析氧电势差为368 mV,而 RuO 2为278 mV,提高了析氯反应选择性.在此基础上,对 RuO 2-SnO 2电极在实际制备氧化电解水过程中的电解效率,有效氯含量、次氯酸含量及强化实验寿命进行了考察.结果表明,RuO 2-SnO 2电极比 RuO 2电极氯离子电解效率提高了11．34％,有效氯含量提高了35．57％,次氯酸含量提高了33．62％,电极强化实验寿命提高了14倍.最后,通过 SEM 表征和电化学孔隙率的计算,表明RuO 2-SnO 2电极表面较平整,内部孔隙率大,所以使电解液不容易渗透到电极内部,而使电极的耐腐蚀性和使用寿命都将得到提高.
语种：
中文
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琼脂和卡拉胶凝胶性能研究
作者：
刘汶甲;杨晓鸿;李文阳;徐鹏飞
期刊：
应用化工 ,2013年42(9):1744-1746 ISSN：1671-3206
作者机构：
[刘汶甲; 杨晓鸿; 李文阳; 徐鹏飞] 武汉工业学院化学与环境工程学院
关键词：
琼脂;卡拉胶;凝胶强度
摘要：
利用质构仪测量琼脂和卡拉胶凝胶特性,重点研究了Mg~(2+)、浓度和pH值对琼脂和卡拉胶凝胶强度的影响。结果表明,琼脂凝胶强度随着Mg~(2+)浓度的增加有小趋势的增加,因此可在琼脂中添加Mg~(2+),而Mg~(2+)不能使卡拉胶凝胶,浓度是影响凝胶强度的主要因素,凝胶强度随着浓度的增加而增加,随着pH先增后减。
语种：
中文
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