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Dendritic sidebranches of a binary system with enforced flow

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Chinese Physics B 2010年第12期19卷 394-399页

作者：李向明王自东 School of Materials Science and Engineering University of Science and Technology Beijing

In the present paper, the problem of sidebranches in the binary dendritic growth with enforced flow is studied. The positions of the first sidebranch and spacing of dendritic sidebranches are presented. For the neutral stable mode of dendritic growth, effects of various parameters on sidebranches are analysed. Our result shows that sidebranches are produced behind a critical point ξC′.

关键词： binary system sidebranches enforced flow pattern formation

Vapor-Liquid Equilibria for Dimethyl Carbonate-n-Butyl Acetate binary system at 101.325kPa

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Chinese Journal of Chemical Engineering 1999年第1期7卷 83-85页

作者：施云海李文清涂晋林 E China Univ Sci & Technol Res Inst Chem Engn Shanghai 200237 Peoples R China

The vapor-liquid equilibrium (VLE) data for the dimethyl carbonate-n-butyl acetate binary system were measured by an Ellis equilibrated distillator. The experimental data were checked for their thermodynamic consistency through statistical methods. The VLE data was correlated with Wilson and NRTL activity coefficient models and also with the calculation of the vapor phase fugacity coefficient by the modified Peng-Robinson equation of state.

关键词： vapor-liquid equilibrium binary system dimethyl carbonate n-butyl acetate

Theoretical Studies on Critical Properties of binary system with Supercritical Carbon Dioxide

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Chemical Research in Chinese Universities 2003年第1期19卷 80-84页

作者： ZHANG Jing chang, LIU Kang and CAO Wei liang Faculty of Science, Beijing University of Chemical Technology, Beijing 100029, P. R. China Faculty of Science Beijing University of Chemical Technology 北京 100029

A new expression of mixing rule is suggested according to the Mayson′s mixing rule in this paper, which adopts the Redlich Kwong cubic equation of state and the modified Chueh Prausnitz method to calculate the experiment critical points of six binary mixtures CO 2+toluene, CO 2+cyclohexane, CO 2+ n butanal, CO 2+ i butanal , CO 2+methanol, CO 2+ethanol. The coefficients of interaction parameter in the expression of mixing rule were optimized from experimental data. The calculated results of critical temperature and critical pressure meet the experiment data well. The maximum relative errors of temperature and pressure between the calculation results and experiment data are 1 493% and 5 2236% respectively, indicating that the proposed expression of mixing rule is reasonable. This may provide a fundamental method for studying and predicting the properties of supercritical fluids.

关键词： Supercritical fluid Critical properties binary system Carbon dioxide

Phase Diagram of RbI-SmI2 binary system and Structural Investigation of RbSm2I5 and RbSmI3

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Chemical Research in Chinese Universities 1988年第3期 62-69页

作者： Zhao Xinhua,Wang Shihua Jiang Shengbang(Department of Chemistry, Beijing Normal University, Beijing)

The RbI-SmI2 , binary system was studied with DTA and X-ray powder diffraction. Its phase diagram shows that it has a congruently melting compound,RbSm2I5 , with a melting point 524℃; an incongru-ently melting compound, Rb2SmI4 , with an inconsruently point 467℃ and two compounds, RbSmI3, and Rb3SmI5, being decomposed at 433℃ and 460℃, respectively. The measured structure of RbSm2I5 shows that it is isomorphous with NH4 Pb2 Cl5 space group P21/c, a=10 . 063(3)A, b=9.003(3)A. c =14 . 242(5)A°,β=90.23(3)°;z = 4, MVx= 1 94 . 3cm3/mol;D=5.255g/cm3 and Do =5. 334g/cm3 (25. 0℃).The structural, investigation ofRbSmI3 shows that it belongs to the orthorhombic system with a = 15.914(6)A, b=8.898(3)A c =12.193(5)A; Z=8, MVx =130.0cm3/mol, Dx =4 . 743g/cm3,Do = 4.597g/cm3(25.0℃).

关键词： binary system X-ray powder diffraction

Phase Behavior of Ionic Liquid with Thiophene Based binary system Predicted Using COSMO-RS Model

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Journal of Environmental Science and Engineering(B) 2013年第12期2卷 679-688页

作者： Anantharaj Ramalingam Tamal Banerjee Mohd. Ali Hashim Department of Chemical Engineering Faculty of Engineering University of Malaya Kuala Lumpur 50603 Malaysia Department of Chemical Engineering Indian Institute of Technology Guwahati Guwahati 781039 India

In this work, the COSMO-RS （conductor like screening model for real solvent） model algorithm was derived from the modified Rachford rice method. It could be more helpful to investigate the phase behavior of binary systems with the help of quantum chemical calculation at 6-31G＊ basis set. COSMO-RS was used to predict solubility of binary mixture involving non-ILs （ionic liquids）, and ILs systems are： benzyl ethylamine ＋ glycerol system （Type-Ⅰ）, nitro methane ＋ cyclohexane system （Type-Ⅱ）, dipropylamine ＋ water system （Type-Ⅲ）, 1,2-ethanediol ＋ thiophene system （Type-Ⅳ）, [1,2-DMIM] [salicylate] ＋ thiophene （Type-Ⅳ）, and [EMIM] [NO3] ＋ thiophene （Type-Ⅳ）. Totally 15 cations with 27 anions were used for generating 405 binary LLE （liquid liquid equilibrium） systems involving thiophene. However, the predicted COSMO-RS values are consisting with the reported experimental values. Furthermore, the immiscibility gap at 298.15 K was determined and compared for various ILs. It was found that l-butylpyrrolidinium, l-octylquinolinium, 1-octylpyridinium and 1-octyl-3-methylimidazolium based cations are most suitable for thiophene extraction from any liquid mixture.

关键词： Ionic liquid thiophene binary system COSMO-RS model.

IMEC——AN EXPERT system FOR RETRIEVAL AND PREDICTION OF binary INTERMETALLIC COMPOUNDS

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Acta Metallurgica Sinica(English Letters) 1989年第12期2卷 428-433页

作者： ZHOU Ban JIN Shiming SHAO Jun CHEN Nianyi Shanghai Institute of Metallurgy,Academia Sinica,Shanghai,China

An expert system,IMEC,for the retrieval and prediction of binary intermetallic compounds has been *** rules found by chenlieal bond parameter-pattern recognition method have been used for computerized *** base of known mtermetallic compounds and chemical bond parameters of metallic elements and the knowledge proeessing system are in cluded in the expert *** man-machine interfacing,the formation,stoichiometry and crystal type o fall binary intermetallic compounds can be predicted or retrieved.

关键词： binary system intermetallic compound expert system

The two—dimensional alternative binary L—J system：liquid—gas phase diagram

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Chinese Physics B 2003年第1期12卷 79-83页

作者：张陟陈立溁 DepartmentofPhysics revisedmanuscriptreceived26September2002

A two-dimensional (2D) binary system without considering the Lennard-Jones (L-J) potential has been studied by using the Collins model. In this paper, we introduce the L-J potential into the 2D binary system and consider the existence of the holes that are called the 'molecular fraction'. The liquid-gas phase diagram of the 2D alternative binary L-J system is obtained. The results are quite analogous to the behaviour of 3D substances.

关键词： L-J potential Collins model liquid-gas phase diagram binary system

Measurement of binary phase diagram of Cu_2S-MoS_2 system

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Transactions of Nonferrous Metals Society of China 2013年第1期23卷 271-275页

作者：陈星宇赵中伟郝明明刘旭恒中南大学冶金科学与工程学院长沙410083 中南大学稀有金属冶金与材料制备湖南省重点实验室长沙410083

A novel method,bath smelting process,was developed to treat molybdenite concentrate aiming at the existing problems of traditional *** understand the dissolving behavior of MoS2 in white matte,the binary phase diagram of Cu2S-Mo2S was measured by the cooling curve *** result shows that this system is a simple binary eutectic with a eutectic temperature of（1117.0±3.0）℃ and a eutectic composition of（1.70±0.20）% MoS2 in mass *** the MoS2 addition exceeds 4.48%,MoS2 and Cu2S can form the ternary compound containing CuMo2S3 or *** the temperature range of copper smelting,1200-1300℃,molybdenite can dissolve in the cuprous *** 1200℃,the solubility of molybdenite can reach 14.8%.

关键词： binary system Cu2S-MoS2 bath smelting process solubility eutectic molybdenite

An Investigation on Eutectic binary Phase Diagram of Volatilizable Energetic system TNAZ by High Pressure DSC

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An Investigation on Eutectic Binary Phase Diagram of Volatil...