atmospheric pressure, with the melting point being T = (279.65 and
280.25) K, respectively [45,46]. The latter TBPO hydrate (corresponding
to 26 wt% TBPO aqueous solution) with a higher melting
point has a crystal unit composed of four 51264 cages, four 51263
cages, four 51262 cages, and fourteen 512 cages associated with
148 H2O in hydrate structure, and the unoccupied 512 cages can
encage small gas molecules [45]. The present work was carried
out with the purpose of understanding the effects of additive type
and concentration on the phase equilibrium conditions of flue gas.