TY - JOUR T1 - Hydrate phase equilibrium of ternary gas mixtures containing carbon dioxide, hydrogen and propane JF - Journal of Chemical Thermodynamics Y1 - 2013 A1 - Babu, Ponnivalavan A1 - Yang, Ting A1 - Veluswamy, Hari Prakash A1 - Kumar, Rajnish A1 - Linga, Praveen KW - Carbon dioxide capture KW - Gas hydrates KW - Global warming KW - Phase equilibrium KW - Pre-combustion KW - Thermodynamics AB -

Hydrate phase equilibrium of the ternary guest mixtures containing carbon dioxide, hydrogen and propane at two different compositions were determined. Addition of mole composition of 2.5% propane to the fuel gas (CO2 (40%)/H-2 (60%)) mixture reduces the hydrate formation conditions by 66% at the temperature of 278.4 K. A Clausius-Clapeyron plot for the experimental results was plotted and from the slope, the enthalpy of hydrate dissociation was calculated. The enthalpy of dissociation of the mixed hydrate formed from a ternary gas mixture containing mole composition 38.1% CO2, 59.4% H-2 and 2.5% C3H8 was found to be 110 kJ.mol(-1) and hence it was concluded that the mixed hydrate formed structure II (sII) hydrates. Whereas for the ternary gas mixture containing mole composition 80.0% CO2, 18.8% H-2, and 1.2% C3H8, the enthalpy of dissociation of the mixed hydrate was found to be 78 kJ.mol(-1) and hence we believe the mixed hydrate formed structure I (sI) hydrate. (C) 2013 Elsevier Ltd. All rights reserved.

PB - ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD CY - 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND VL - 61 U3 - Foreign U4 - 2.423 ER -