Zobrazeno 1 - 10
of 33
pro vyhledávání: '"D.R. Fredrickson"'
Publikováno v:
Journal of Nuclear Materials. 201:184-189
Aluminum nitrate activity coefficients obtained by vapor pressure osmometry are compared with activity coefficients derived from nitric acid extraction measurements and Bromley's correlation. This solvent extraction approach was possible because of t
Autor:
D.R. Fredrickson, N. P. Yao, C. A. Swoboda, S.D. Gabelnick, F. Hornstra, K.A. Phan, P. H. Cannon, M.K. Singleterry
Publikováno v:
IEEE Transactions on Sonics and Ultrasonics. 30:69-77
An ultrasonic technique to measure specific gravity in lead- acid battery electrolyte is described in detail. This technique, which is based on the theory that the velocity of sound in a liquid depends on the density of the liquid, compares the ultra
Autor:
D.R. Fredrickson, M.G. Chasanov
Publikováno v:
The Journal of Chemical Thermodynamics. 6:629-633
The enthalpy (relative to 298.15 K) of liquid sodium was measured to 1505 K, using a high-precision drop-calorimetric system. The following equation represents the enthalpy of liquid sodium in the temperature range from 554 to 1505 K: H o (T)−H o (
Autor:
D.R. Fredrickson, P.A.G. O'Hare
Publikováno v:
The Journal of Chemical Thermodynamics. 8:353-360
A high-precision drop-calorimetric system has been used to measure the enthalpies (relative to 298.15 K) of α- and β-Na2UO4 to 1300 K, and of Cs2UO4 to 1100 K. In the range 298 to 1193 K the enthalpy increments for α-Na2UO4 can be represented by t
Publikováno v:
Separation Science and Technology. 23:1435-1451
Models of equilibrium extraction data are being developed for use in computer simulations of metal extraction processes. The correlations are based on chemical mass action principles in which the effects of metal complexation and aqueous phase activi
Publikováno v:
The Journal of Chemical Thermodynamics. 9:963-972
Solution and drop-calorimetric studies of magnesium uranate are described. From the solution experiments, the standard enthalpy of formation, ΔHfo(MgUO4, c, 298.15 K) was found to be −(1857.0 ± 1.3) kJ mol−1. The drop-calorimetric experiments g
Publikováno v:
The Journal of Chemical Thermodynamics. 12:801-805
High-temperature enthalpy increments and derived heat capacities are reported for Cs 2 CrO 4 . There is a solid-to-solid transition at (1031 ± 3) K and the melting temperature is (1236 ± 5) K. The enthalpies of transition and fusion are (2.9 ± 0.6
Autor:
Ian J. Hastings, Howard E. Flotow, William G. Lyon, D.R. Fredrickson, Fernande Grandjean, Darrell W. Osborne
Publikováno v:
The Journal of Chemical Thermodynamics. 9:473-481
The heat capacity of triuranium silicide, U 3 Si, has been measured from 1 to 350 K and its enthalpy determined from 298 to 1160 K. The coefficient γ for the heat capacity contribution of the conduction electrons ( γT ) is (39.3 ± 0.4) mJ K −2 m
Autor:
D.R. Fredrickson, M.G. Chasanov
Publikováno v:
The Journal of Chemical Thermodynamics. 3:693-696
A high-precision drop-calorimetric system has been used to measure the enthalpy (relative to 298.15 K) of MoS2 in the temperature range 500 to 1200 K. All temperatures are based on IPTS-48. The results can be represented by the following equation, wh
Autor:
D.R. Fredrickson, M.G. Chasanov
Publikováno v:
The Journal of Chemical Thermodynamics. 5:485-490
A high-precision drop-calorimetric system has been used to measure the enthalpy (relative to 298.15 K) of Na 2 O in the temperature range 500 to 1300 K. A rapid rise in the derived C p ( T ) is observed about 900 K, which may be attributed to the ons