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Table 3

Parameters for clathrate formation/dissociation.

Symbol Name Unity Value

n hyd Hydrate number 6α
Bulk density of water structure of clathrate kg m-3 790
kcl Heat conductivity of clathrate W m-1 K-1
Valid temperature range for values
T ≤ 80 K 5.47954 × 10-2   T − 3.13102 × 10-3   T2
 + 9.40412 × 10-5   T3 − 1.29299 × 10-6T4
 + 6.38159 × 10-9T5β
T ≥ 80 K 2.1 × 10-4   T + 0.43χ
H Absolute enthalpy of dissociation of guest trapped in clathrate J mol-1
CO 15 720δ
CO2 21 327δ
CH4 18 130ε
H2S 25 404δ
Nominal kinetics constant of formation of clathrate mol m-2 Pa-1 s-1 3 × 10-13φ
Nominal kinetics constant of dissociation of clathrate mol m-2 Pa-1 s-1 φ



Sloan (1998); Sun & Mohanty (2006);


data fit of Krivchikov et al. (2005a,b, 2008);


Krivchikov et al. (2005a,b);


provided by the Clausius-Clapeyron equation from data given by references in Table 2;


Handa (1986b);


Englezos et al. (1987); Schmitt (1986).

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