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Page 35 of 36
Molecular sieving membranes for carbon dioxide separation
 Authors propose a template modulated crystal transition approach to tune the flexibility of Decadodecasil 3 R zeolite to prepare ultra-selective membranes for CO2/CH4 separation. The strategy could pave the way of all-silica zeolite membranes to practical applications. Du et al., Nature Communications, Vol. 13 - 1, p. 1427 (2022) |
Molecular sieving membranes with uniform pore size are highly desired for carbon dioxide separation. All-silica zeolite membranes feature well-defined micropores, but the size-exclusion effect is significantly compromised by the non-selective macro-pores generated during detemplation. Authors propose a template modulated crystal transition approach to tune the flexibility of Decadodecasil 3 R zeolite to prepare ultra-selective membranes for CO2/CH4 separation. The organic template molecules are transitionally converted to tight carbon species by the one-minute overheating at high temperature, which are burnt out by a following moderate thermal treatment. The resulting membranes exhibit CO2/CH4 high selectivity and CO2 |
permeance. The strategy is considered to pave the way of all-silica zeolite membranes to practical applications.
Retrieve Article Control of zeolite framework flexibility for ultra-selective carbon dioxide separation
Du P., Zhang Y., Wang X., Canossa S., Hong Z., Nénert G., Jin W., Gu X.
Nature Communications, Vol. 13 - 1, p. 1427 (2022)
DOI: 10.1038/s41467-022-29126-6
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Last Updated on Monday, 22 May 2023 15:31
