Ionic liquids have received increasing attention for their potential uses as non-wolatile separation and reaction solvents, and the liquid-liquid equilibrium（LLE）of ionic liquid containing systems is of great import...Ionic liquids have received increasing attention for their potential uses as non-wolatile separation and reaction solvents, and the liquid-liquid equilibrium（LLE）of ionic liquid containing systems is of great importance for such practical applications.The NRTL（non-random two liquid）equation was extended and used in this paper for the calculation of the LLE data of some ionic liquid-alcohol binary systems.It was found that the extended NRTL model could be accurately used to represent the LLE of these ionic liquid-alcohol systems with the average absolute deviations lower than 0.6%.The LLE data of two ternary systems, H2O-n-butanol-[bmim]PF6 and H2O-n-butanol-[omim]PF6, were further successfully predicted for the first time by using the NRTL binary parameters.展开更多
The non-random two liquids （NRTL） equation together with the Pitzer/Curl Virial equation of state are used to investigate the simultaneous representation of excess enthalpies （h^E） and vapour-liquid equilibria （...The non-random two liquids （NRTL） equation together with the Pitzer/Curl Virial equation of state are used to investigate the simultaneous representation of excess enthalpies （h^E） and vapour-liquid equilibria （VLE） and the VLE prediction from h^E data. The calculation strategy for properly determining NRTL parameters and the effect of their temperature dependence on the simultaneous correlation of h^E and VLE data and the VLE extrapolation are analysed in detail.展开更多
NRTL equation is one of the equations that widely used in chemical engineering thermodynamics. The marked advantage of the NRTL equation is that it can be used for predicting the thermodynamicsproperties of multicompo...NRTL equation is one of the equations that widely used in chemical engineering thermodynamics. The marked advantage of the NRTL equation is that it can be used for predicting the thermodynamicsproperties of multicomponent systems only with the data of binary systems. However the application of it to molten alloys and the other melts in metallungy has been mrsly reported. In this article, it was used to correlate thermodynamics data of binary molten alloys which are included in the systems-Cd-Bi-Sn, Cd-Bi-Pb, Cd-Sn-Pb. The data of those ternary systems were predicted by NRTL equation. The activities of Cd in quaternary system Cd-Bi-Pb-Sn were also calculated.展开更多
A new equation for predicting surface tension is proposed based on the thermodynamic definition of surface tension and the expression of the Gibbs free energy of the system. Using the NRTL equation to represent the ex...A new equation for predicting surface tension is proposed based on the thermodynamic definition of surface tension and the expression of the Gibbs free energy of the system. Using the NRTL equation to represent the excess Gibbs free energy, a two-parameter surface tension equation is derived. The feasibility of the new equation has been tested in terms of 124 binary and 16 multicomponent systems(13-ternary and 3-quaternary) with absolute relative deviations of 0.59% and 1.55% respectively. This model is also predictive for the temperature dependence of surface tension of liquid mixtures. It is shown that, with good accuracy, this equation is simple and reliable for practical use.展开更多
一、NRTL简介NRTL（Nationally Recognized Testing Laboratory）指美国国家认可实验室。NRTL是由美国劳工部（United States Department of Labor）下属的美国职业安全与健康管理局OSHA（Occupational Safety and Health Administratio...一、NRTL简介NRTL（Nationally Recognized Testing Laboratory）指美国国家认可实验室。NRTL是由美国劳工部（United States Department of Labor）下属的美国职业安全与健康管理局OSHA（Occupational Safety and Health Administration）推出的项目,用来测试和认证OSHA规定的一些电气设备的安全性。NRTL实验室不是官方机构,而是说明该实验室对某些标准和产品具备安全检测能力。并且,只有在OSHA授权的产品目录下的产品,在OSHA认可的实验室地点（一个实验室可以有多个测试地点）测试合格，加施在0sHA注册的NRTL标志，OSHA才可以接受该实验室出具的认证。展开更多
文摘Ionic liquids have received increasing attention for their potential uses as non-wolatile separation and reaction solvents, and the liquid-liquid equilibrium（LLE）of ionic liquid containing systems is of great importance for such practical applications.The NRTL（non-random two liquid）equation was extended and used in this paper for the calculation of the LLE data of some ionic liquid-alcohol binary systems.It was found that the extended NRTL model could be accurately used to represent the LLE of these ionic liquid-alcohol systems with the average absolute deviations lower than 0.6%.The LLE data of two ternary systems, H2O-n-butanol-[bmim]PF6 and H2O-n-butanol-[omim]PF6, were further successfully predicted for the first time by using the NRTL binary parameters.
基金Supported by Deutsche Forschungsgemeinschaft(DFG) (LE 886/4-1)
文摘The non-random two liquids （NRTL） equation together with the Pitzer/Curl Virial equation of state are used to investigate the simultaneous representation of excess enthalpies （h^E） and vapour-liquid equilibria （VLE） and the VLE prediction from h^E data. The calculation strategy for properly determining NRTL parameters and the effect of their temperature dependence on the simultaneous correlation of h^E and VLE data and the VLE extrapolation are analysed in detail.
文摘NRTL equation is one of the equations that widely used in chemical engineering thermodynamics. The marked advantage of the NRTL equation is that it can be used for predicting the thermodynamicsproperties of multicomponent systems only with the data of binary systems. However the application of it to molten alloys and the other melts in metallungy has been mrsly reported. In this article, it was used to correlate thermodynamics data of binary molten alloys which are included in the systems-Cd-Bi-Sn, Cd-Bi-Pb, Cd-Sn-Pb. The data of those ternary systems were predicted by NRTL equation. The activities of Cd in quaternary system Cd-Bi-Pb-Sn were also calculated.
基金the Scientific Research Foundation of the State Education Ministry for Returned Overseas Chinese Scholar.
文摘A new equation for predicting surface tension is proposed based on the thermodynamic definition of surface tension and the expression of the Gibbs free energy of the system. Using the NRTL equation to represent the excess Gibbs free energy, a two-parameter surface tension equation is derived. The feasibility of the new equation has been tested in terms of 124 binary and 16 multicomponent systems(13-ternary and 3-quaternary) with absolute relative deviations of 0.59% and 1.55% respectively. This model is also predictive for the temperature dependence of surface tension of liquid mixtures. It is shown that, with good accuracy, this equation is simple and reliable for practical use.
文摘一、NRTL简介NRTL（Nationally Recognized Testing Laboratory）指美国国家认可实验室。NRTL是由美国劳工部（United States Department of Labor）下属的美国职业安全与健康管理局OSHA（Occupational Safety and Health Administration）推出的项目,用来测试和认证OSHA规定的一些电气设备的安全性。NRTL实验室不是官方机构,而是说明该实验室对某些标准和产品具备安全检测能力。并且,只有在OSHA授权的产品目录下的产品,在OSHA认可的实验室地点（一个实验室可以有多个测试地点）测试合格，加施在0sHA注册的NRTL标志，OSHA才可以接受该实验室出具的认证。
