Phase equilibrium measurements of structure II clathrate hydrates of hydrogen with various promoters

A. Torres Trueba, L.J. Rovetto, L.J. Florusse, M.C. Kroon, C.J. Peters

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    42 Citations (Scopus)

    Abstract

    Phase equilibrium measurements of single and mixed organic clathrate hydrates with hydrogen were determined within a pressure range of 2.0–14.0 MPa. The organic compounds studied were furan, 2,5-dihydrofuran, tetrahydropyran, 1,3-dioxolane and cyclopentane. These organic compounds are known to form structure II clathrate hydrates with water. It was found that the addition of hydrogen to form a mixed clathrate hydrate increases the stability compared to the single organic clathrate hydrates. Moreover, the mixed clathrate hydrate also has a much higher stability compared to a pure hydrogen structure II clathrate hydrate. Therefore, the organic compounds act as promoter materials. The stabilities of the single and mixed organic clathrate hydrates with hydrogen showed the following trend in increasing order: 1,3-dioxolane <2,5-dihydrofuran <tetrahydropyran <furan <cyclopentane, indicating that both size and geometry of the organic compound determine the stability of the clathrate hydrates.
    Original languageEnglish
    Pages (from-to)6-10
    Number of pages5
    JournalFluid Phase Equilibria
    Volume307
    Issue number1
    DOIs
    Publication statusPublished - 2011

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