Advances in the Study of Gas Hydrates by Dielectric Spectroscopy

Ivan Lunev; Bulat Kamaliev; Valery Shtyrlin; Yuri Gusev; Airat Kiiamov; Yulia Zaripova; Artur Galiullin; Abdolreza Farhadian; Mikhail Varfolomeev; Malcolm Kelland

doi:10.3390/molecules26154459

Advances in the Study of Gas Hydrates by Dielectric Spectroscopy

Molecules. 2021 Jul 24;26(15):4459. doi: 10.3390/molecules26154459.

Authors

Affiliations

¹ Department of Radio Electronics, Kazan Federal University, 18 Kremlevskaya Street, 420008 Kazan, Russia.
² Department of Inorganic Chemistry, Kazan Federal University, 18 Kremlevskaya Street, 420008 Kazan, Russia.
³ Department of General Physics, Kazan Federal University, 18 Kremlevskaya Street, 420008 Kazan, Russia.
⁴ Department of Physical Chemistry, Kazan Federal University, 18 Kremlevskaya Street, 420008 Kazan, Russia.
⁵ Department of Petroleum Engineering, Kazan Federal University, 18 Kremlevskaya Street, 420008 Kazan, Russia.
⁶ Department of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, N-4036 Stavanger, Norway.

Abstract

The influence of kinetic hydrate inhibitors on the process of natural gas hydrate nucleation was studied using the method of dielectric spectroscopy. The processes of gas hydrate formation and decomposition were monitored using the temperature dependence of the real component of the dielectric constant ε'(T). Analysis of the relaxation times τ and activation energy ΔE of the dielectric relaxation process revealed the inhibitor was involved in hydrogen bonding and the disruption of the local structures of water molecules.

Keywords: dielectric relaxation; dielectric spectroscopy; gas hydrates; kinetic hydrate inhibitors.

Grants and funding

18-05-79121/Russian Foundation for Basic Research