期刊
ACS APPLIED MATERIALS & INTERFACES
卷 10, 期 39, 页码 33574-33580出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.8b12613
关键词
MFI zeolite membrane; gas separation; xenon; anesthetic; carbon dioxide
资金
- STW, The Netherlands [13941]
We demonstrate that b-oriented MFI (Mobil Five) zeolite membranes can be manufactured by in situ crystallization using an intermediate amorphous SiO2 layer. The improved in-plane growth by using a zeolite growth modifier leads to fusion of independent crystals and eliminates boundary gaps, giving good selectivity in the separation of CO2/Xe mixtures. The fast diffusion of CO2 dominates the overall membrane selectivity toward the CO2/Xe mixture. Because of the straight and short [010] channels, the obtained CO2 permeation fluxes are several orders of magnitude higher than those of carbon molecular sieving membranes and polymeric membranes, opening opportunities for Xe recovery from waste anesthetic gas.
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