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学者姓名:何茂刚

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Experimental and correlational study of isobaric molar heat capacities of fatty acid esters: Ethyl nonanoate and ethyl dodecanoate EI Scopus SCIE
期刊论文 | 2019 , 479 , 47-51 | Fluid Phase Equilibria
WoS CC Cited Count: 2 SCOPUS Cited Count: 5
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Abstract :

An experimental study on the isobaric molar heat capacities of ethyl nonanoate and ethyl dodecanoate was performed at temperatures between 303 K and 393 K and at pressures between 0.1 MPa and 25.2 MPa. An increase of isobaric molar heat capacity with temperature increase was observed, and temperature was found to have a greater effect on isobaric molar heat capacity than pressure. Then the isobaric molar heat capacity data of 18 saturated fatty acid methyl and ethyl esters in literature were selected, to get a general correlation for the isobaric molar heat capacity of saturated fatty acid alkyl esters. The average absolute relative deviation and the maximum deviation of the present correlation from experimental data are lower than 0.70% and 3.82%, respectively. At last, to test the predictive ability of the proposed correlation, the heat capacities of ethyl nonanoate and ethyl dodecanoate were calculated. The average absolute relative deviation and the maximum deviation from our experimental results are 0.88% and 2.10%, respectively. © 2018 Elsevier B.V.

Keyword :

Average absolute relative deviations Fatty acid alkyl esters Fatty acid esters Flow method General correlations Isobaric molar heat capacity Predictive abilities Temperature increase

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GB/T 7714 Liu, Xiangyang , Zhu, Chenyang , Yang, Feng et al. Experimental and correlational study of isobaric molar heat capacities of fatty acid esters: Ethyl nonanoate and ethyl dodecanoate [J]. | Fluid Phase Equilibria , 2019 , 479 : 47-51 .
MLA Liu, Xiangyang et al. "Experimental and correlational study of isobaric molar heat capacities of fatty acid esters: Ethyl nonanoate and ethyl dodecanoate" . | Fluid Phase Equilibria 479 (2019) : 47-51 .
APA Liu, Xiangyang , Zhu, Chenyang , Yang, Feng , Su, Chao , He, Maogang . Experimental and correlational study of isobaric molar heat capacities of fatty acid esters: Ethyl nonanoate and ethyl dodecanoate . | Fluid Phase Equilibria , 2019 , 479 , 47-51 .
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Mutual diffusion coefficients of 3–methyl–1–butanol + n–heptane and 2–methyl–1–butanol + n–heptane from 288.15 K to 318.15 K EI Scopus SCIE
期刊论文 | 2019 , 131 , 97-103 | Journal of Chemical Thermodynamics
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Abstract :

© 2018 Elsevier Ltd The mutual diffusion coefficients of binary mixtures, 3–methyl–1–butanol + n–heptane and 2–methyl–1–butanol + n–heptane, were measured over the mass fraction from 0.05 to 0.95 at temperatures T = 288.15 K, 298.15 K, 308.15 K and 318.15 K under atmospheric pressure. A digital holographic interferometry system was employed for the measurements and its expanded relative uncertainty of mutual diffusion coefficients was estimated to be less than 2.4%. The influences of temperature and composition on the mutual diffusion coefficients were investigated. Furthermore, the correlations of the mutual diffusion coefficients were fitted to the experimental data as functions of the mass fraction and temperature. The correlations represent the data with the absolute average of relative deviations (AARDs) of 0.88% for 3–methyl–1–butanol + n–heptane and 0.89% for 2–methyl–1–butanol + n–heptane, respectively.

Keyword :

2-Methyl-1-butanol 3-Methyl-1-butanol Mutual diffusion coefficient n-Heptane

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GB/T 7714 Zhang, Ying , Zhan, Taotao , Chen, Junshuai et al. Mutual diffusion coefficients of 3–methyl–1–butanol + n–heptane and 2–methyl–1–butanol + n–heptane from 288.15 K to 318.15 K [J]. | Journal of Chemical Thermodynamics , 2019 , 131 : 97-103 .
MLA Zhang, Ying et al. "Mutual diffusion coefficients of 3–methyl–1–butanol + n–heptane and 2–methyl–1–butanol + n–heptane from 288.15 K to 318.15 K" . | Journal of Chemical Thermodynamics 131 (2019) : 97-103 .
APA Zhang, Ying , Zhan, Taotao , Chen, Junshuai , He, Maogang . Mutual diffusion coefficients of 3–methyl–1–butanol + n–heptane and 2–methyl–1–butanol + n–heptane from 288.15 K to 318.15 K . | Journal of Chemical Thermodynamics , 2019 , 131 , 97-103 .
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Speed of Sound Measurement in 1-Methoxy-2-propanol from (306.81 to 648.29) K and up to 10 MPa EI SCIE
期刊论文 | 2019 , 64 (1) , 337-344 | Journal of Chemical and Engineering Data
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Abstract :

1-Methoxy-2-propanol (PGMME) is widely used as an oxygenated additive for diesel fuel. Experimental speed of sound data for PGMME are very scarce. Therefore, the speed of sound in PGMME was measured by the Brillouin light scattering (BLS) method in the temperature range from (306.81 to 648.29) K and pressures up to 10 MPa, including saturated liquid/vapor, liquid, and near-critical and supercritical fluid states. The relative expanded uncertainty (k = 2) of our BLS experimental system is estimated to be less than 1.4%. The variation of the speed of sound with the temperature and pressure is illustrated. Moreover, correlations for experimental speeds of sound in the saturated liquid/vapor and liquid are presented. The correlations represent the experimental data with average absolute deviations of 0.24% for the saturated liquid, 0.19% for the saturated vapor, and 0.36% for the liquid region. © 2018 American Chemical Society.

Keyword :

1-methoxy-2-propanol Average absolute deviation Brillouin light scattering Experimental system Oxygenated additive Saturated liquid Temperature and pressures Temperature range

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GB/T 7714 Zhang, Ying , Zhan, Taotao , Chen, Junshuai et al. Speed of Sound Measurement in 1-Methoxy-2-propanol from (306.81 to 648.29) K and up to 10 MPa [J]. | Journal of Chemical and Engineering Data , 2019 , 64 (1) : 337-344 .
MLA Zhang, Ying et al. "Speed of Sound Measurement in 1-Methoxy-2-propanol from (306.81 to 648.29) K and up to 10 MPa" . | Journal of Chemical and Engineering Data 64 . 1 (2019) : 337-344 .
APA Zhang, Ying , Zhan, Taotao , Chen, Junshuai , Chen, Yutian , He, Maogang . Speed of Sound Measurement in 1-Methoxy-2-propanol from (306.81 to 648.29) K and up to 10 MPa . | Journal of Chemical and Engineering Data , 2019 , 64 (1) , 337-344 .
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Performance comparison of two absorption-compression hybrid refrigeration systems using R1234yf/ionic liquid as working pair EI SCIE
期刊论文 | 2019 , 181 , 319-330 | Energy Conversion and Management
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Abstract :

R1234yf (2,3,3,3-tetrafluoroprop-1-ene)/ionic liquid is a kind of environment-friendly working pair, which can overcome the disadvantages of H2O/LiBr and NH3/H2O. In this work, three new working pairs R1234yf/[HMIM][TfO], R1234yf/[HMIM][PF6], R1234yf/[HMIM][BF4] were proposed and new solubility data for them were determined. Two new absorption-compression hybrid refrigeration systems were proposed to improve the cooling performances of the single-effect absorption refrigeration system using R1234yf/[HMIM][TfO], R1234yf/[HMIM][PF6] and R1234yf/[HMIM][BF4] as working pair. The effects of compressor position, compression ratio (r), generation temperature (Tg), evaporation temperature (Te), condensation temperature (Tc) and absorption temperature (Ta) on the coefficient of performance (COP) and circulation ratio (f) were analyzed. Comparison result shows that the two systems can effectively improve the cooling performance of the single-effect absorption refrigeration system including increasing COP, reducing the heat load of condenser and f, and enlarge the operation range of Tg, Ta, and Te. Putting compressor between evaporator and absorber is a better choice than putting it between generator and condenser. R1234yf/[HMIM][TfO] shows better cooling performance than R1234yf/[HMIM][PF6] and R1234yf/[HMIM][BF4] due to its favorable thermophysical properties. © 2018 Elsevier Ltd

Keyword :

Absorption refrigeration system Absorption temperature Absorption-compression Circulation ratio Coefficient of Performance Condensation temperature Evaporation temperature Generation temperature

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GB/T 7714 Liu, Xiangyang , Ye, Zheng , Bai, Lihang et al. Performance comparison of two absorption-compression hybrid refrigeration systems using R1234yf/ionic liquid as working pair [J]. | Energy Conversion and Management , 2019 , 181 : 319-330 .
MLA Liu, Xiangyang et al. "Performance comparison of two absorption-compression hybrid refrigeration systems using R1234yf/ionic liquid as working pair" . | Energy Conversion and Management 181 (2019) : 319-330 .
APA Liu, Xiangyang , Ye, Zheng , Bai, Lihang , He, Maogang . Performance comparison of two absorption-compression hybrid refrigeration systems using R1234yf/ionic liquid as working pair . | Energy Conversion and Management , 2019 , 181 , 319-330 .
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Viscosity of oxygenated fuel: A model based on Eyring's absolute rate theory EI SCIE
期刊论文 | 2019 , 241 , 218-226 | Fuel
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Abstract :

A viscosity model was proposed for oxygenated fuel components; it was based on Eyring's absolute rate theory and a cubic equation of state Soave-Redlich-Kwong. The viscosity was associated with flow energy which could be divided into the activation energy and the vacancy-formation energy, and then a reference state for simplifying the calculation process was introduced in the present model. This work also reported a viscosity database at temperatures from 243.15 K to 413.15 K and pressures up to 200 MPa for 31 oxygenated fuel components containing alcohols, esters and ethers in order to verify the proposed model. The average absolute relative deviations between calculated and experimental data were lower than 2.37%. Furthermore, the free-volume model, which has a similar consideration of flow energy with this work, was chosen to further investigate the performance of the present model, and in general, the present model showed a better accuracy than the free-volume model. Finally, it was shown that the proposed model could be extended to the mixtures successfully. © 2018 Elsevier Ltd

Keyword :

Average absolute relative deviations Calculation process Cubic equation of state Eyring's absolute rate theory Flow energy Free volume models Oxygenated fuel Vacancy formation energies

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GB/T 7714 Zhu, Chenyang , Yang, Feng , Liu, Xiangyang et al. Viscosity of oxygenated fuel: A model based on Eyring's absolute rate theory [J]. | Fuel , 2019 , 241 : 218-226 .
MLA Zhu, Chenyang et al. "Viscosity of oxygenated fuel: A model based on Eyring's absolute rate theory" . | Fuel 241 (2019) : 218-226 .
APA Zhu, Chenyang , Yang, Feng , Liu, Xiangyang , Afzal, Waheed , He, Maogang . Viscosity of oxygenated fuel: A model based on Eyring's absolute rate theory . | Fuel , 2019 , 241 , 218-226 .
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Dynamical structure factor of complex plasmas for varying wave vectors SCIE
期刊论文 | 2019 , 26 (2) | PHYSICS OF PLASMAS
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Abstract :

The dynamical structure factor has been reported for three dimensional strongly coupled Yukawa liquids (SCYLs) through state-of-the-art equilibrium molecular dynamics (EMD) simulations in a microcanonical ensemble (NVE). The effects of varying wave vectors (k = 2 pi/L) have been computed along with different arrangements of Coulomb coupling (Gamma) and the Debye screening parameter (kappa) on the dynamical structure-factor S(k, omega) using EMD simulations. Our new investigations of S(k, omega) show that the amplitude of oscillation decreases and the frequency increases with increasing Gamma, respectively, for the SCYLs. Our simulations show that the decreasing behavior is noted for the frequency of plasma S(k, omega) with increasing kappa and system size (N). The obtained EMD results are found to be more efficient and accurate than that of various previous simulation data, and the present EMD approach gives more satisfactory results with appropriate system sizes at high values of k, for a wide range of plasma states (Gamma, kappa). It has been shown that the present density S(k, omega) of SCYLs fluctuates more at intermediate to high Coulomb couplings (average to lower system temperature 1/Gamma) and low values of Debye screening; however, it less fluctuates at higher N and kappa. Published under license by AIP Publishing.

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GB/T 7714 Shahzad, Aamir , Shakoori, Muhammad Asif , He, Mao-Gang et al. Dynamical structure factor of complex plasmas for varying wave vectors [J]. | PHYSICS OF PLASMAS , 2019 , 26 (2) .
MLA Shahzad, Aamir et al. "Dynamical structure factor of complex plasmas for varying wave vectors" . | PHYSICS OF PLASMAS 26 . 2 (2019) .
APA Shahzad, Aamir , Shakoori, Muhammad Asif , He, Mao-Gang , Yang, Fang . Dynamical structure factor of complex plasmas for varying wave vectors . | PHYSICS OF PLASMAS , 2019 , 26 (2) .
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Mesoscopic Diffusion of Poly(ethylene oxide) in Pure and Mixed Solvents EI SCIE PubMed Scopus
期刊论文 | 2018 , 122 (13) , 3454-3464 | JOURNAL OF PHYSICAL CHEMISTRY B
WoS CC Cited Count: 1
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Abstract :

We present results from an experimental dynamic light-scattering study of poly(ethylene oxide) (PEO) in both a pure solvent (water) and a mixed solvent (tert-butanol + water). The concentration dependence of the diffusive relaxation of the PEO molecules is found to be typical of polymers in a good solvent. However, the mesoscopic diffusive behavior of PEO in the mixed solvent is very different, indicating an initial collapse and subsequent reswelling of PEO caused by co-nonsolvency. Furthermore, in the solutions of PEO with very large molecular weights, we found additional hydrodynamic modes indicating the presence of PEO clusters and aggregates similar to those found by some other investigators.

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GB/T 7714 Zheng, Xiong , Anisimov, Mikhail A. , Sengers, Jan V. et al. Mesoscopic Diffusion of Poly(ethylene oxide) in Pure and Mixed Solvents [J]. | JOURNAL OF PHYSICAL CHEMISTRY B , 2018 , 122 (13) : 3454-3464 .
MLA Zheng, Xiong et al. "Mesoscopic Diffusion of Poly(ethylene oxide) in Pure and Mixed Solvents" . | JOURNAL OF PHYSICAL CHEMISTRY B 122 . 13 (2018) : 3454-3464 .
APA Zheng, Xiong , Anisimov, Mikhail A. , Sengers, Jan V. , He, Maogang . Mesoscopic Diffusion of Poly(ethylene oxide) in Pure and Mixed Solvents . | JOURNAL OF PHYSICAL CHEMISTRY B , 2018 , 122 (13) , 3454-3464 .
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Estimating the viscosity of ionic liquid at high pressure using Eyring's absolute rate theory EI SCIE Scopus
期刊论文 | 2018 , 458 , 170-176 | FLUID PHASE EQUILIBRIA
WoS CC Cited Count: 2
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Abstract :

A viscosity model for ionic liquids (ILs) at high pressure based on Eyring's absolute rate theory was presented, in which the flow energy was considered as two parts: the activation energy and the vacancy formation energy. A reference state was introduced to simplify the calculation process. Peng-Robinson equation, Soave-Redlich-Kwong equation and group contribution method were chosen to estimate the compressibility factor required in the present model. The experimental viscosity data of 25 ILs at the temperatures from 273.15 K to 433.15 K and pressures up to 300 MPa were used to test the present model. The overall average absolute relative deviation of the present model coupled with the three compressibility factor calculation methods are 2.03%, 2.01% and 1.92%, respectively. The accuracy effect of the compressibility factor calculation method on the performance of the present model was also investigated. Parameters of the present model were generalized in terms of the carbon numbers of the cation alkyl chain for the homologous series of ILs in order to improve the predictive ability. (C) 2017 Elsevier B.V. All rights reserved.

Keyword :

High pressure Viscosity model Eyring's absolute rate theory Ionic liquid Compressibility factor

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GB/T 7714 He, Maogang , Zhu, Chenyang , Liu, Xiangyang . Estimating the viscosity of ionic liquid at high pressure using Eyring's absolute rate theory [J]. | FLUID PHASE EQUILIBRIA , 2018 , 458 : 170-176 .
MLA He, Maogang et al. "Estimating the viscosity of ionic liquid at high pressure using Eyring's absolute rate theory" . | FLUID PHASE EQUILIBRIA 458 (2018) : 170-176 .
APA He, Maogang , Zhu, Chenyang , Liu, Xiangyang . Estimating the viscosity of ionic liquid at high pressure using Eyring's absolute rate theory . | FLUID PHASE EQUILIBRIA , 2018 , 458 , 170-176 .
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Solubilities of six lithium salts in five non-aqueous solvents and in a few of their binary mixtures EI SCIE Scopus
期刊论文 | 2018 , 461 , 1-7 | FLUID PHASE EQUILIBRIA
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Abstract :

Solubilities were measured from 25 to 45 degrees C for six lithium salts (LiF, LiCl, LiBr, LiNO3, LiTFSI and LiPF6) in five pure non-aqueous solvents (ethanol, acetonitrile, dimethyl carbonate, dimethyl sulfoxide and propylene carbonate) and in a few of their binary mixtures (ethanol + DMSO, DMC + DMSO and DMC + PC). The experimental method uses a Varian inductively-coupled plasma-optical-emission spectrometer (ICP-OES). Solubilities increase with rising temperature. At a given temperature, LiNO3 shows the highest solubility in all solvents. Salt solubilities follow the order LiNO3> LiTFSI > LiBr > LiCI > LiPF6 > LiF. The dissolving abilities of the solvents are in the order ethanol > DMSO > acetonitrile > PC > DMC. Coupled with the salt's melting temperature and enthalpy of fusion, liquid-phase activity coefficients for salts were obtained from the solubility data. (C) 2018 Elsevier B.V. All rights reserved.

Keyword :

Lithium salts Activity coefficient Solvents Solubility

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GB/T 7714 Xin, Nan , Sun, Yanjun , He, Maogang et al. Solubilities of six lithium salts in five non-aqueous solvents and in a few of their binary mixtures [J]. | FLUID PHASE EQUILIBRIA , 2018 , 461 : 1-7 .
MLA Xin, Nan et al. "Solubilities of six lithium salts in five non-aqueous solvents and in a few of their binary mixtures" . | FLUID PHASE EQUILIBRIA 461 (2018) : 1-7 .
APA Xin, Nan , Sun, Yanjun , He, Maogang , Radke, Clayton J. , Prausnitz, John M. . Solubilities of six lithium salts in five non-aqueous solvents and in a few of their binary mixtures . | FLUID PHASE EQUILIBRIA , 2018 , 461 , 1-7 .
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Isobaric Molar Heat Capacity of Ethyl Octanoate and Ethyl Decanoate at Pressures up to 24 MPa EI SCIE Scopus
期刊论文 | 2018 , 63 (6) , 2252-2256 | JOURNAL OF CHEMICAL AND ENGINEERING DATA
WoS CC Cited Count: 5 SCOPUS Cited Count: 5
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Abstract :

The isobaric molar heat capacities of ethyl octanoate and ethyl decanoate were determined at T = 294-354 K and p = 0.1-24 MPa. The measurements were conducted by a flow calorimeter. The measured results were in good agreements with several available experimental data at atmosphere pressure and the calculated results at high pressure in literatures. Furthermore, a fitting equation was presented to calculate the C-p of ethyl octanoate and ethyl decanoate. The maximum absolute relative deviations between experimental results and calculated data are lower than 0.4%.

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GB/T 7714 Su, Chao , Zhu, Chenyang , Yang, Feng et al. Isobaric Molar Heat Capacity of Ethyl Octanoate and Ethyl Decanoate at Pressures up to 24 MPa [J]. | JOURNAL OF CHEMICAL AND ENGINEERING DATA , 2018 , 63 (6) : 2252-2256 .
MLA Su, Chao et al. "Isobaric Molar Heat Capacity of Ethyl Octanoate and Ethyl Decanoate at Pressures up to 24 MPa" . | JOURNAL OF CHEMICAL AND ENGINEERING DATA 63 . 6 (2018) : 2252-2256 .
APA Su, Chao , Zhu, Chenyang , Yang, Feng , Ye, Zheng , Liu, Xiangyang , He, Maogang . Isobaric Molar Heat Capacity of Ethyl Octanoate and Ethyl Decanoate at Pressures up to 24 MPa . | JOURNAL OF CHEMICAL AND ENGINEERING DATA , 2018 , 63 (6) , 2252-2256 .
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