Memory effect in tetra-: N -butyl ammonium bromide semiclathrate hydrate reformation: The existence of solution structures after hydrate decomposition

Hironobu Machida, Takeshi Sugahara, Izumi Hirasawa

    Research output: Contribution to journalArticle

    6 Citations (Scopus)

    Abstract

    A large degree of supercooling is necessary to form the tetra-n-butyl ammonium bromide (TBAB) semiclathrate hydrate. One of the effective methods to suppress supercooling is the utilization of a kind of hysteresis called the "memory effect". Generally, the memory effect reduces supercooling and/or the induction period in clathrate hydrate formation. In the present study, we have observed the solution structure of TBAB aqueous solutions in the formation and decomposition processes of TBAB semiclathrate hydrate by scanning electron microscopy (SEM) with the freeze-fracture replica method. The relationship between the memory effect and the solution structures of the TBAB supercooled aqueous solution was elucidated. The memory effect in the TBAB semiclathrate hydrate reformation is derived from the existence of residual clusters of 10-20 nm in the TBAB aqueous solution at 286.2 K, which is 1.0 K higher than the equilibrium decomposition temperature, even after the TBAB semiclathrate hydrate was completely decomposed.

    Original languageEnglish
    Pages (from-to)3328-3334
    Number of pages7
    JournalCrystEngComm
    Volume20
    Issue number24
    DOIs
    Publication statusPublished - 2018 Jan 1

    Fingerprint

    ammonium bromides
    Hydrates
    hydrates
    Supercooling
    Decomposition
    decomposition
    Data storage equipment
    supercooling
    aqueous solutions
    Hysteresis
    clathrates
    ammonium bromide
    replicas
    Scanning electron microscopy
    induction
    hysteresis
    scanning electron microscopy
    Temperature

    ASJC Scopus subject areas

    • Chemistry(all)
    • Materials Science(all)
    • Condensed Matter Physics

    Cite this

    Memory effect in tetra- : N -butyl ammonium bromide semiclathrate hydrate reformation: The existence of solution structures after hydrate decomposition. / Machida, Hironobu; Sugahara, Takeshi; Hirasawa, Izumi.

    In: CrystEngComm, Vol. 20, No. 24, 01.01.2018, p. 3328-3334.

    Research output: Contribution to journalArticle

    @article{be4a4a5eedd1462c8f7b4aaea233fe72,
    title = "Memory effect in tetra-: N -butyl ammonium bromide semiclathrate hydrate reformation: The existence of solution structures after hydrate decomposition",
    abstract = "A large degree of supercooling is necessary to form the tetra-n-butyl ammonium bromide (TBAB) semiclathrate hydrate. One of the effective methods to suppress supercooling is the utilization of a kind of hysteresis called the {"}memory effect{"}. Generally, the memory effect reduces supercooling and/or the induction period in clathrate hydrate formation. In the present study, we have observed the solution structure of TBAB aqueous solutions in the formation and decomposition processes of TBAB semiclathrate hydrate by scanning electron microscopy (SEM) with the freeze-fracture replica method. The relationship between the memory effect and the solution structures of the TBAB supercooled aqueous solution was elucidated. The memory effect in the TBAB semiclathrate hydrate reformation is derived from the existence of residual clusters of 10-20 nm in the TBAB aqueous solution at 286.2 K, which is 1.0 K higher than the equilibrium decomposition temperature, even after the TBAB semiclathrate hydrate was completely decomposed.",
    author = "Hironobu Machida and Takeshi Sugahara and Izumi Hirasawa",
    year = "2018",
    month = "1",
    day = "1",
    doi = "10.1039/c8ce00190a",
    language = "English",
    volume = "20",
    pages = "3328--3334",
    journal = "CrystEngComm",
    issn = "1466-8033",
    publisher = "Royal Society of Chemistry",
    number = "24",

    }

    TY - JOUR

    T1 - Memory effect in tetra-

    T2 - N -butyl ammonium bromide semiclathrate hydrate reformation: The existence of solution structures after hydrate decomposition

    AU - Machida, Hironobu

    AU - Sugahara, Takeshi

    AU - Hirasawa, Izumi

    PY - 2018/1/1

    Y1 - 2018/1/1

    N2 - A large degree of supercooling is necessary to form the tetra-n-butyl ammonium bromide (TBAB) semiclathrate hydrate. One of the effective methods to suppress supercooling is the utilization of a kind of hysteresis called the "memory effect". Generally, the memory effect reduces supercooling and/or the induction period in clathrate hydrate formation. In the present study, we have observed the solution structure of TBAB aqueous solutions in the formation and decomposition processes of TBAB semiclathrate hydrate by scanning electron microscopy (SEM) with the freeze-fracture replica method. The relationship between the memory effect and the solution structures of the TBAB supercooled aqueous solution was elucidated. The memory effect in the TBAB semiclathrate hydrate reformation is derived from the existence of residual clusters of 10-20 nm in the TBAB aqueous solution at 286.2 K, which is 1.0 K higher than the equilibrium decomposition temperature, even after the TBAB semiclathrate hydrate was completely decomposed.

    AB - A large degree of supercooling is necessary to form the tetra-n-butyl ammonium bromide (TBAB) semiclathrate hydrate. One of the effective methods to suppress supercooling is the utilization of a kind of hysteresis called the "memory effect". Generally, the memory effect reduces supercooling and/or the induction period in clathrate hydrate formation. In the present study, we have observed the solution structure of TBAB aqueous solutions in the formation and decomposition processes of TBAB semiclathrate hydrate by scanning electron microscopy (SEM) with the freeze-fracture replica method. The relationship between the memory effect and the solution structures of the TBAB supercooled aqueous solution was elucidated. The memory effect in the TBAB semiclathrate hydrate reformation is derived from the existence of residual clusters of 10-20 nm in the TBAB aqueous solution at 286.2 K, which is 1.0 K higher than the equilibrium decomposition temperature, even after the TBAB semiclathrate hydrate was completely decomposed.

    UR - http://www.scopus.com/inward/record.url?scp=85048879452&partnerID=8YFLogxK

    UR - http://www.scopus.com/inward/citedby.url?scp=85048879452&partnerID=8YFLogxK

    U2 - 10.1039/c8ce00190a

    DO - 10.1039/c8ce00190a

    M3 - Article

    AN - SCOPUS:85048879452

    VL - 20

    SP - 3328

    EP - 3334

    JO - CrystEngComm

    JF - CrystEngComm

    SN - 1466-8033

    IS - 24

    ER -