Equilibrium data of hydrogen, methane, nitrogen, carbon dioxide, and natural gas in semi-Clathrate hydrates of tetrabutyl ammonium bromide

Mosayyeb Arjmandi, Antonin Chapoy, Bahman Tohidi

Research output: Contribution to journalArticle

219 Citations (Scopus)

Abstract

Tetrabutyl ammonium bromide (TBAB) forms a semi-clathrate hydrate, which can incorporate small gas molecules such as methane and nitrogen. It has recently been used for separation of gases. However, there are very limited experimental data on the phase boundaries of the gas hydrate form in the presence of TBAB. In this work, we present new experimental data at high-pressure TBAB, w = 0.10, TBAB (w = 0.10 and 0.43) + hydrogen, TBAB (w = 0.05, 0.10, 0.20, and 0.30) + methane, TBAB (w = 0.10) + nitrogen, TBAB (w = 0.1 and 0.427) + carbon dioxide, and TBAB (w = 0.05, 0.10, and 0.43) + natural gas semi-clathrate hydrate phase boundaries. In another part of this work, the results of visual observations of the methane + TBAB semi-clathrate hydrate morphology and the methane gas bubbles released from methane + TBAB semi-clathrate hydrates on dissociation are presented. Finally, the effect of TBAB mass fraction on hydrate promotion and the stability of the new semiclathrate hydrate are presented.

Original languageEnglish
Pages (from-to)2153-2158
Number of pages6
JournalJournal of Chemical and Engineering Data
Volume52
Issue number6
DOIs
Publication statusPublished - Nov 2007
Externally publishedYes

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