Clinoptilolite(K)

Formula : K1.1(Si4.9Al1.1)O12:2.7H2O

Family: 
Zeolites
Space group: 
Monoclinic - Prismatic HM symbol (2/m) Space Group: C 2/m
Dana class: 
77.1.4.2bVIII- 77 Tektosilicates Tectosilicate Zeolite group ; 77.1 Tektosilicates Tectosilicate Zeolite group true zeolites ; 77.1.4 Heulandite and related species

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
450.941 210.730 (Ref.: 97coo/alb) Coombs, D.S., Alberti, A., Armbruster, T., Artioli, G., Colella, C., Galli, E., Grice, J.D., Liebau, F., Mandarino, J.A., Minato, H., Nickel, E.H., Passaglia, E., Peacor, D.R., Quartieri, S., Rinaldi, R., Ross, M., Sheppard, R.A., Tillmanns, E., Vealini, G., 1997. Recommended nomenclature for zeolite minerals - report of the subcommittee on zeolites of the international mineralogical association, commission on new minerals and mineral names. Canadian Mineralogist, 35, 1571-1606. -6107026 (Ref.: Internal calculation) -6568410 (Ref.: 09bla) Blanc P. (2009) - Thermochimie - Selection de constantes thermodynamiques pour les zeolites : version 2. Rapport final. Rapport BRGM/RP-57796-FR. 55 p. 507.660 (Ref.: 09bla) Blanc P. (2009) - Thermochimie - Selection de constantes thermodynamiques pour les zeolites : version 2. Rapport final. Rapport BRGM/RP-57796-FR. 55 p. 454.31 (Ref.: 10vie) Vieillard P., 2010 - A predictive model for the entropies and heat capacities of zeolites. Eur. J. Mineral. 22, 823-836
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.
454.31 0.00 0.00 (Ref.: 10vie) Vieillard P., 2010 - A predictive model for the entropies and heat capacities of zeolites. Eur. J. Mineral. 22, 823-836
Reaction properties

Clinoptilolite(K) + 4.4H+ + 4.9H2O ⇌ 1.1Al+3 + 1.1K+ + 4.9H4SiO4

298.15 K, 1 bar log10K: -1.14 ΔH°r:-49035 J·mol-1 (Ref.: 09bla) Blanc P. (2009) - Thermochimie - Selection de constantes thermodynamiques pour les zeolites : version 2. Rapport final. Rapport BRGM/RP-57796-FR. 55 p.
T(°C) 0 25 60 100 150 200 250 300
log10K -0.55 -1.14 -2.18 -3.23 -4.27 -5.10 -5.84 -6.59
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
-2314.861606 -0.290530 146129.034964 815.308319 -9529842.937350