Tetrahydrofuran clathrate hydrate formation.
We report on the formation of tetrahydrofuran clathrate hydrate studied by x-ray Raman scattering measurements at the oxygen K edge. A comparison of x-ray Raman spectra measured from water-tetrahydrofuran mixtures and tetrahydrofuran hydrate at different temperatures supports stochastic hydrate formation models rather than models assuming hydrate precursors. This is confirmed by molecular dynamics simulations and density functional theory calculations of x-ray Raman spectra. In addition, changes in the spectra of tetrahydrofuran hydrate with temperatures close to the hydrate's dissociation temperature were observed and may be connected to changes in hydrate's local structure due to the formation of hydrogen bonds between guest and water molecules.
Conrad
Heiko
H
Fakultät Physik/DELTA, Technische Universität Dortmund, D-44221 Dortmund, Germany.
Lehmkühler
Felix
F
Sternemann
Christian
C
Sakko
Arto
A
Paschek
Dietmar
D
Simonelli
Laura
L
Huotari
Simo
S
Feroughi
Omid
O
Tolan
Metin
M
Hämäläinen
Keijo
K