Heat of Mixing and Solution of Benzene C6H6 + C7H9N 2,4-Dimethylpyridine (HMSD1111, LB4271_H)

Author(s):  
I. Cibulka ◽  
J.-C. Fontaine ◽  
K. Sosnkowska-Kehiaian ◽  
H. V. Kehiaian
Keyword(s):  
1953 ◽  
Vol 92 (6) ◽  
pp. 1345-1346 ◽  
Author(s):  
H. S. Sommers ◽  
W. E. Keller ◽  
J. G. Dash
Keyword(s):  

1956 ◽  
Vol 25 (6) ◽  
pp. 1166-1170 ◽  
Author(s):  
Charles R. Mueller ◽  
James E. Lewis

BIBECHANA ◽  
2015 ◽  
Vol 13 ◽  
pp. 100-113 ◽  
Author(s):  
SK Yadav ◽  
LN Jha ◽  
D Adhikari

Thermodynamic properties, such as free energy of mixing, heat of mixing, entropy of mixing, activities and the microscopic structural properties, such as concentration fluctuation in long-wavelength limit and chemical short-range order parameter of Pb-Tl liquid alloy at 773 K have been studied on the basis of regular associated solution model. We have estimated the mole fractions of the complex and the unassociated atoms assuming the existence of  complex as energetically favoured in the liquid state. The compositional contributions of the heat of mixing of the species Pb and Tl and the heat of formation of the compound to the net enthalpy change have also been studied. The transport properties such as, viscosity and the ratio of mutual and intrinsic coefficients have been studied using different approaches. The surface concentration of Tl atoms has been computed and it has been employed to calculate the surface tension of Pb-Tl liquid alloy. Both the theoretical and the experimental values of the concentration fluctuation in long-wavelength limit are found to be less than the ideal value, revealing that the concerned system is hetero-coordinating in nature. The interaction energies are found to be temperature dependent and respective alloy is found to be weakly interacting system. BIBECHANA 13 (2016) 100-113


1980 ◽  
Vol 9 (10) ◽  
pp. 771-784 ◽  
Author(s):  
Melvin D. Croucher ◽  
Donald Patterson
Keyword(s):  

1954 ◽  
Vol 94 (2) ◽  
pp. 241-243 ◽  
Author(s):  
V. S. Nanda
Keyword(s):  

1990 ◽  
Vol 5 (3) ◽  
pp. 488-497 ◽  
Author(s):  
G. C. Wong ◽  
W. L. Johnson ◽  
E. J. Cotts

The mechanisms of metallic glass formation and competing crystallization processes in mechanically-deformed Ni-Zr multilayered composites have been investigated by means of differential scanning calorimetry and x-ray diffraction. Our investigation of the heat of formation of amorphous NixZr1−x alloys shows a large negative heat of mixing (on the order of 30 kJ/mole) for compositions near Zr55Ni45 with a compositional dependence qualitatively similar to that predicted by mean field theory. We find that the products of solid state reactions in composites of Ni and Zr can be better understood in terms of the equilibrium phase diagram and the thermal stability of liquid quenched metallic glasses. We have determined the composition of the growing amorphous phase at the Zr interface in these Ni-Zr diffusion couples to be 55 ± 4% Zr. We investigated the kinetics of solid state reactions competing with the solid state amorphization reaction and found the value of the activation energy of the initial crystallization and growth of the growing amorphous phase to be 2.0 ± 0.1 eV, establishing an upper limit on the thermal stability of the growing amorphous phase.


1978 ◽  
Vol 27 (1-3) ◽  
pp. 9-18 ◽  
Author(s):  
Richard W. Hanks ◽  
Romeo L. Tan ◽  
James J. Christensen

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