Contributions to the Experimental Investigation of the Nascent Polymerisation of Ethylene on Supported Catalysts, 2a : Influence of Reaction Conditions

Audrey Di Martino, G. Weickert, Timothy F.L. McKenna

    Research output: Contribution to journalArticleAcademic

    Abstract

    A series of experiments in a novel quench flow reactor was used to study the influence of the means of adding TEA to the catalyst, the reaction temperature and the hydrogen concentration on the kinetics and morphology of the nascent phase of the polymerisation of ethylene in heptane slurry. It was shown that regardless of the way in which the alkyl was added, an extremely rapid reaction rate was observed for the first few fractions of a second, but that precontacting the catalyst and the TEA cocatalyst led to a slightly higher initial rate. On the other hand, the nascent morphology of the particle/support complex was strongly influenced by the means of adding the alkyl, with precontacting of the two components leading to a better defined product. The influence of the temperature was found to be less significant; however, this was attributed to the particular catalyst.
    Original languageUndefined
    Pages (from-to)229-242
    JournalMacromolecular Reaction Engineering
    Volume1
    Issue number2
    DOIs
    Publication statusPublished - 2007

    Keywords

    • Kinetics (polym.)
    • rapid reaction
    • IR-72262
    • Nascent polymerization
    • polyethylene (PE)
    • Ziegler-Natta Polymerization

    Cite this

    @article{7181e1c364734e8a9dc2a49ce727fd15,
    title = "Contributions to the Experimental Investigation of the Nascent Polymerisation of Ethylene on Supported Catalysts, 2a : Influence of Reaction Conditions",
    abstract = "A series of experiments in a novel quench flow reactor was used to study the influence of the means of adding TEA to the catalyst, the reaction temperature and the hydrogen concentration on the kinetics and morphology of the nascent phase of the polymerisation of ethylene in heptane slurry. It was shown that regardless of the way in which the alkyl was added, an extremely rapid reaction rate was observed for the first few fractions of a second, but that precontacting the catalyst and the TEA cocatalyst led to a slightly higher initial rate. On the other hand, the nascent morphology of the particle/support complex was strongly influenced by the means of adding the alkyl, with precontacting of the two components leading to a better defined product. The influence of the temperature was found to be less significant; however, this was attributed to the particular catalyst.",
    keywords = "Kinetics (polym.), rapid reaction, IR-72262, Nascent polymerization, polyethylene (PE), Ziegler-Natta Polymerization",
    author = "{Di Martino}, Audrey and G. Weickert and McKenna, {Timothy F.L.}",
    year = "2007",
    doi = "10.1002/mren.200600018",
    language = "Undefined",
    volume = "1",
    pages = "229--242",
    journal = "Macromolecular Reaction Engineering",
    issn = "1862-832X",
    publisher = "Wiley-VCH Verlag",
    number = "2",

    }

    Contributions to the Experimental Investigation of the Nascent Polymerisation of Ethylene on Supported Catalysts, 2a : Influence of Reaction Conditions. / Di Martino, Audrey; Weickert, G.; McKenna, Timothy F.L.

    In: Macromolecular Reaction Engineering, Vol. 1, No. 2, 2007, p. 229-242.

    Research output: Contribution to journalArticleAcademic

    TY - JOUR

    T1 - Contributions to the Experimental Investigation of the Nascent Polymerisation of Ethylene on Supported Catalysts, 2a : Influence of Reaction Conditions

    AU - Di Martino, Audrey

    AU - Weickert, G.

    AU - McKenna, Timothy F.L.

    PY - 2007

    Y1 - 2007

    N2 - A series of experiments in a novel quench flow reactor was used to study the influence of the means of adding TEA to the catalyst, the reaction temperature and the hydrogen concentration on the kinetics and morphology of the nascent phase of the polymerisation of ethylene in heptane slurry. It was shown that regardless of the way in which the alkyl was added, an extremely rapid reaction rate was observed for the first few fractions of a second, but that precontacting the catalyst and the TEA cocatalyst led to a slightly higher initial rate. On the other hand, the nascent morphology of the particle/support complex was strongly influenced by the means of adding the alkyl, with precontacting of the two components leading to a better defined product. The influence of the temperature was found to be less significant; however, this was attributed to the particular catalyst.

    AB - A series of experiments in a novel quench flow reactor was used to study the influence of the means of adding TEA to the catalyst, the reaction temperature and the hydrogen concentration on the kinetics and morphology of the nascent phase of the polymerisation of ethylene in heptane slurry. It was shown that regardless of the way in which the alkyl was added, an extremely rapid reaction rate was observed for the first few fractions of a second, but that precontacting the catalyst and the TEA cocatalyst led to a slightly higher initial rate. On the other hand, the nascent morphology of the particle/support complex was strongly influenced by the means of adding the alkyl, with precontacting of the two components leading to a better defined product. The influence of the temperature was found to be less significant; however, this was attributed to the particular catalyst.

    KW - Kinetics (polym.)

    KW - rapid reaction

    KW - IR-72262

    KW - Nascent polymerization

    KW - polyethylene (PE)

    KW - Ziegler-Natta Polymerization

    U2 - 10.1002/mren.200600018

    DO - 10.1002/mren.200600018

    M3 - Article

    VL - 1

    SP - 229

    EP - 242

    JO - Macromolecular Reaction Engineering

    JF - Macromolecular Reaction Engineering

    SN - 1862-832X

    IS - 2

    ER -