Friedel_Salt

Formula : Ca4Al2Cl2O6:10H2O

Family: 
LDH
High temperature: 
The stability of Friedel Sals at low temperature is possible.
Geological context: 
Described with the cement phases the stability of Friedel Sals at low temperature is possible. This mineral belong to the double-layered hydroxide 3CaO.Al2O3.0.5CaBr2.0.5CaCl2.10H2O group.

Dernière mise à jour le 25.01.2021

THERMODYNAMICS

Individual properties (298.15 K)
M
g·mol-1
 V°
cm3·mol-1
 ΔGºf
J·mol-1
 ΔHºf
J·mol-1
 Sº
J·mol-1·k-1
 CP
J·mol-1·K-1
561.329 276.240 (Ref.: 97tay) Taylor H.F.W. , 1997 Cement Chemistry, 2nd. Ed., Thomas Telford, London. -6815483 (Ref.: 10bbla/bou) Blanc, Ph.; Bourbon, X.; Lassin, A.; Gaucher, E.C. 2010 - Chemical model for cement-based materials: Thermodynamic data assessment for phases other than C-S-H. Cement and Concrete Research, 40, p. 1360-1374. -7670042 (Ref.: 10bbla/bou) Blanc, Ph.; Bourbon, X.; Lassin, A.; Gaucher, E.C. 2010 - Chemical model for cement-based materials: Thermodynamic data assessment for phases other than C-S-H. Cement and Concrete Research, 40, p. 1360-1374. 527.851 (Ref.: Internal calculation) 692.86 (Ref.: 10bbla/bou) Blanc, Ph.; Bourbon, X.; Lassin, A.; Gaucher, E.C. 2010 - Chemical model for cement-based materials: Thermodynamic data assessment for phases other than C-S-H. Cement and Concrete Research, 40, p. 1360-1374.
CP(T) = a + b·T + ·c·T-2 (T in Kelvin)
a
J·mol-1·K-1
 b * 103
J·mol-1·K-2
 c * 10-5
J·K·mol-1
 Maier Kelley Ref.
692.86 0.00 0.00 (Ref.: 10bbla/bou) Blanc, Ph.; Bourbon, X.; Lassin, A.; Gaucher, E.C. 2010 - Chemical model for cement-based materials: Thermodynamic data assessment for phases other than C-S-H. Cement and Concrete Research, 40, p. 1360-1374.
Reaction properties

Friedel_Salt + 12H+ ⇌ 2Al+3 + 4Ca+2 + 2Cl- + 16H2O

298.15 K, 1 bar log10K: 74.95 ΔH°r:-486198 J·mol-1 (Ref.: 10bbla/bou) Blanc, Ph.; Bourbon, X.; Lassin, A.; Gaucher, E.C. 2010 - Chemical model for cement-based materials: Thermodynamic data assessment for phases other than C-S-H. Cement and Concrete Research, 40, p. 1360-1374.
T(°C) 0 25 60 100 150 200 250 300
log10K 82.71 74.95 65.98 57.76 49.52 42.70 36.65 30.76
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
-3374.592908 -0.531054 203775.911195 1227.014807 -9934999.379909