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Title: Zeolite synthesis by pseudomorphic transformation and by controlled addition of silica
Author: Franklin, Ruth M.
Awarding Body: University of Edinburgh
Current Institution: University of Edinburgh
Date of Award: 1989
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The potential of two unusual methods of zeolite synthesis has been investigated; firstly the synthesis of zeolites in the form of pseudomorphic aggregates and secondly zeolite synthesis by soxhlet extraction of silica. Pseudomorphic particles of silicalite-1 and ZSM-5 have been synthesised in stirred autoclaves and characterised by a variety of techniques including X-ray powder diffraction, scanning electron microscopy and thermal analysis. Some ZSM-5 samples have been further characterised by N2 sorption, mercury porosimetry and pyridine desorption and have also been tested catalytically, using the isomerisation of a meta-xylene feedstock as the test reaction. Further investigations into pseudomorphic synthesis have included the use of different types of reactor and the way in which this affects the products; and attempts to synthesise a variety of zeolites and silica molecular sieves in pseudomorphic form. Soxhlet extraction of silica was used to enable zeolite synthesis from an essentially monomeric silica source. Investigations into the potential advantages of this synthesis techniques have been carried out in both aqueous and organic-based reaction mixtures.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available