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.
|Qualification||Doctor of Philosophy|
|Award date||4 Dec 2019|
|Place of Publication||Enschede|
|Publication status||Published - 4 Dec 2019|