From amorphous silica membranes to crystalline high-silica zeolite membranes: new avenues for the fabrication of microporous inorganic membranes for gas separation applications

Pelin Karakiliç

Research output: ThesisPhD Thesis - Research UT, graduation UT

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Microporous ceramic and zeolite membranes are expected to be of key interest for application in energy efficient molecular separations in industrial process streams as well as for recovery of precious gases. The need of highly selective, stable and easy to fabricate membranes is of considerable importance for the (petro)chemical industry. Cost-effective membranes are relevant for many separation processes such as H2/CO2 separation in pre-combustion carbon capture and CO2/CH4 separation for natural gas purification. Health is another important field that is gaining an increasing interest in society. Closed-circuit anaesthesia, using membranes for recovery of the valuable anaesthetic gas xenon, is the only economically acceptable technique for the use of Xe. Appropriate membranes for this application are not available yet. The regular pore structure of microporous zeolite membranes enables these systems to discriminate between molecules of different size and shape. However, existing zeolites membranes lack in reproducibility with regard to performance. Especially mesoporous defects between the zeolites spoils the shape and size selectivity of these membranes. This thesis provides novel approaches for the synthesis of defect-free ceramic and zeolite membranes for light gas separation.
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • University of Twente
  • Nijmeijer, A., Supervisor
  • Winnubst, A.J.A., Supervisor
Award date4 Dec 2019
Place of PublicationEnschede
Print ISBNs978-90-365-4915-8
Publication statusPublished - 4 Dec 2019


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