Sökning: "silicalite-1"

Visar resultat 1 - 5 av 29 avhandlingar innehållade ordet silicalite-1.

  1. 1. Preparation and characterization of collodial suspensions of ZSM-5 type zeolites

    Författare :Anders Persson; Chalmers University of Technology; []
    Nyckelord :silicalite-1; redisperison; FTi.r.; monodisperse; ZSM-5; colloidal zeolite; 27A1 MAS n.m.r.; dynamic light scattering;

    Sammanfattning : .... LÄS MER

  2. 2. Crystallization of colloidal TPA-silicalite-1 by a two-stage varying-temperature synthesis

    Författare :Qinghua Li; Luleå tekniska universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical Technology; Kemisk teknologi;

    Sammanfattning : A novel synthesis method called a two-stage varying-temperature synthesis was developed for the investigation of kinetics and mechanism of the crystallization of discrete colloidal crystals of TPA-silicalite-1. Briefly, this method involves a rapid change in treatment temperature at some point during the crystallization. LÄS MER

  3. 3. Zeolite macrostructures

    Författare :Lubomira Tosheva; Luleå tekniska universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical Technology; Kemisk teknologi;

    Sammanfattning : The preparation of zeolite macrostructures in the form of bilayered hollow tubes and microspheres is presented. The bilayered hollow ZSM-5/silicalite-1 tubes were prepared using carbon fibers as a substrate. The surface of the fibers was modified and colloidal silicalite-1 seed crystals adsorbed. LÄS MER

  4. 4. Tailoring of MFI membranes for enhanced selectivity

    Författare :Jonas Lindmark; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical Technology; Kemisk teknologi;

    Sammanfattning : Zeolite membranes can potentially be used for the separation of many types of mixtures. The membranes can be tailored by a number of methods to suit a specific separation application. In this work both traditional and new innovative methods were used to tailor the properties of membranes in order to enhance the selectivity for a given separation. LÄS MER

  5. 5. Colloidal zeolites : from nucleation to zoned films by seeded growth

    Författare :Qinghua Li; Luleå tekniska universitet; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical Technology; Kemisk teknologi;

    Sammanfattning : The work presented in this thesis concerns the investigation of nucleation kinetics for colloidal zeolites, especially the determination of the nucleation period during crystallization. It also concerns the use of colloidal TPA-silicalite-1 for the preparation of zoned MFI films. LÄS MER