Sökning: "Molecular sieve"
Visar resultat 1 - 5 av 19 avhandlingar innehållade orden Molecular sieve.
1. Modified molecular sieve macrostructures
Sammanfattning : The preparation of molecular sieve based catalysts in appropriate macroforms suitable for practical utilization is of great technological importance. This thesis is dedicated to the preparation of metal containing molecular sieve macrostructures (modified macrostructures). LÄS MER
2. MFI-molecular sieve membranes : synthesis, characterization and modelling
Sammanfattning : This work concerns evaluation by permeation measurements and modeling of thin (.... LÄS MER
3. Molecular sieve film catalysts
Sammanfattning : In this study, well defined ZSM-5 films were prepared on monoliths, ceramic foams, alumina beads, glass beads and crushed quartz glass by further refinement of a method originally developed at the division of Chemical Technology, Luleå University of Technology. The supports were seeded with silicalite-1 seeds and hydrothermally treated, either at 75 °C or at 150 °C in a single or several steps. LÄS MER
4. Properties of molecular sieve membranes
Sammanfattning : Zeolites are crystalline aluminosilicates with molecular sieving properties and are widely used in industry for catalysis, sorption and ion-exchange applications. Zeolite membranes are commercially interesting since this technology may be employed for continuous separation of molecules under severe conditions. LÄS MER
5. Structured molecular sieves : synthesis, modification and characterization
Sammanfattning : The work presented concerns synthesis of structured molecular sieves. The preparation procedure is based on the use of ion exchange resins as macrotemplates. Macroporous cation or anion exchange resin types were used depending on the molecular sieve type to be synthesized. LÄS MER
