Fluid Phase Equilibria, Vol.218, No.2, 235-238, 2004
Thermodynamic stability of structure-H hydrates of methylcyclopentane and cyclooctane helped by methane
The four-phase equilibria were measured for the methylcyclopentane + methane + H2O hydrate system (274.28-287.40 K, 1.75-9.34 MPa) and the cyclooctane + methane + H2O hydrate system (274.08-288.57 K, 1.60-9.33 MPa). Each structure-H hydrate has the lower equilibrium pressure than the pure methane structure-I hydrate in the temperature range of the present work. The isothermal equilibrium pressures of both methylcyclopentane and cyclooctane hydrates are slightly higher than that of methylcyclohexane hydrate. (C) 2004 Elsevier B.V All rights reserved.