Kinetics measurements and in situ Raman spectroscopy of formation of hydrogen–tetrabutylammonium bromide semi-hydrates

Influence of cationic and non-ionic surfactants on the kinetics of mixed hydrogen/tetrahydrofuran hydrates

“…However, forming mixed hydrogen/THF hydrates at these conditions demand high energy requirement in addition to the associated problem of the recyclability of solid ice/THF for successive hydrate formation cycles. Macroscopic kinetic studies on mixed hydrogen/THF hydrates starting from aqueous solution highlight the challenges in forming mixed hydrogen/THF hydrates including the difficulty in forming hydrates even at very high driving force; longer time for hydrate formation due to slower kinetics and low hydrogen storage capacities achieved (Nagai et al, 2008;Trueba et al, 2012;Veluswamy et al, 2014aVeluswamy and Linga, 2013).…”

Reaction rate constant of CO2–Tetra‐n‐butylammounium bromide semi‐clathrate formation

“…[13] These properties have led to a keen interest in utilizing such a compound in industrial settings as a gas hydrate promoter. [15,16] Kinetic models have previously been applied to pure clathrate hydrates in order to estimate reaction parameters such as the rate constant. [15,16] Kinetic models have previously been applied to pure clathrate hydrates in order to estimate reaction parameters such as the rate constant.…”

Phase Equilibria and Dissociation Enthalpies of Tri-n-butylphosphine Oxide Semiclathrate Hydrates Incorporated with CH4, CO2, and H2

“…Comparing these Raman peak positions with THF + H 2 double hydrate, the Raman peaks shifted to higher frequency region by about 7 cm −1 , 14 and had almost an identical wavenumber with the TBAB + H 2 and TBAF + H 2 double hydrates. 15,16 Other gaseous molecules such as CH 4 and CO 2 would also be accommodated in the small 5 12 (1) where R is the gas constant and Z is the compressibility factor. The mean compressibility factor value determined by Pitzer's equation was used for calculating dissociation enthalpy.…”