Phase Equilibria and Spectroscopic Identification of (2-Methylpropane-2-peroxol + Gaseous Guests) Hydrates

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In this study, we introduce a new structure-II hydrate former, 2-methylpropane-2-peroxol (tert-butyl hydroperoxide, TBHP), and identify the structure and guest distributions through spectroscopic tools including high-resolution powder diffraction (HRPD), C-13 solid-state NMR, and Raman spectroscopy. Here, the (H + L + V) phase equilibrium data of (TBHP + X) hydrates (X = CH4, N-2, and O-2) were measured at (3.3 to 7.56) MPa and (282.2 to 288.5) K for CH4, (4.0 to 8.5) MPa and (271.6 to 277.5) K for N-2, and (4.0 to 8.6) MPa and (273.8 to 279.6) K for O-2. The (TBHP + X) hydrate phase equilibria showed that the addition of TBHP increased the structural stability with lower hydrate dissociation pressures when compared with those of pure CH4, N-2, and O-2 hydrates. However, we noticed that the TBHP did not promote hydrate formation conditions as effectively as tetrahydrofuran.
Publisher
AMER CHEMICAL SOC
Issue Date
2012-04
Language
English
Article Type
Article
Keywords

CLATHRATE HYDRATE; THERMAL EXPANSIVITY; GUEST MOLECULES; CARBON-DIOXIDE; TETRAHYDROFURAN; NITROGEN; METHANE; TRANSITION; OXYGEN; CO2

Citation

JOURNAL OF CHEMICAL AND ENGINEERING DATA, v.57, no.4, pp.1128 - 1133

ISSN
0021-9568
DOI
10.1021/je201156p
URI
http://hdl.handle.net/10203/101631
Appears in Collection
CBE-Journal Papers(저널논문)
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