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

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    245 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. © 2007 American Chemical Society.

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

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