Vapour-phase-transport rearrangement technique for the synthesis of new zeolites
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Owing to the significant difference in the numbers of simulated and experimentally feasible zeolite structures, several alternative strategies have been developed for zeolite synthesis. Despite their rationality and originality, most of these techniques are based on trial-and-error, which makes it difficult to predict the structure of new materials. Assembly-Disassembly-Organization-Reassembly (ADOR) method overcoming this limitation was successfully applied to a limited number of structures with relatively stable crystalline layers ( UTL , UOV , *CTH ). Here, we report a straightforward, vapour-phase-transport strategy for the transformation of IWW zeolite with low-density silica layers connected by labile Ge-rich units into material with new topology. In situ XRD and XANES studies on the mechanism of IWW rearrangement reveal an unusual structural distortion-reconstruction of the framework throughout the process. Therefore, our findings provide a step forward towards engineering nanoporous materials and increasing the number of zeolites available for future applications.
Kasneryk , V , Shamzhy , M , Zhou , J , Yue , Q , Mazur , M , Mayoral , A , Luo , Z , Morris , R E , Čejka , J & Opanasenko , M 2019 , ' Vapour-phase-transport rearrangement technique for the synthesis of new zeolites ' , Nature Communications , vol. 10 , 5129 . https://doi.org/10.1038/s41467-019-12882-3
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DescriptionM.S., M.M., R.E.M., J.Č. and M.O. acknowledge OP VVV “Excellent Research Teams” project No.CZ.02.1.01/0.0/0.0/15_003/0000417– CUCAM. M.S. and M.O. thank the Primus Research Program of the Charles University (project number PRIMUS/17/SCI/22 “Soluble zeolites”). R.E.M. also thanks the ERC (Advanced Grant 787073 “ADOR”). A.M. acknowledges The Centre for High-resolution Electron Microscopy (CħEM), supported by SPST of ShanghaiTech University under contract No. EM02161943, and the Natural National Science Foundation of China, through projects NFSC-21850410448 and NSFC- 21835002. Z.L. acknowledges the support from the National Key Research and Development Program of China (2016YFA0300102) and the National Natural Science Foundation of China (11675179, 11434009). J.Č. acknowledges the support of the Czech Science Foundation to the project EXPRO (19-27551×).
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