"Extracting" the Key Fragment in ETS-10 Crystallization and Its Application in AM-6 Assembly |
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| Authors: | Meiling Guo Zhaochi Feng Guanna Li Jan P Hofmann Evgeny A Pidko Pieter C M M Magusin Qiang Guo Bert M Weckhuysen Emiel J M Hensen Fengtao Fan Can Li |
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| Institution: | State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023 (P.R. China), Fax: (+86)?41-84694447; Graduate University of Chinese Academy of Sciences, No.19A Yuquanlu, Beijing, 100049 (P.R. China). |
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| Abstract: | The mechanism of crystallization of microporous titanosilicate ETS-10 was investigated by Raman spectroscopy combined with (29) Si magic-angle spinning (MAS) NMR spectroscopy, DFT calculations, and SEM imaging. The formation of three-membered ring species is shown to be the key step in the hydrothermal synthesis of ETS-10. They are formed by means of a complex process that involves the interaction of silicate species in the reaction mixture, which promotes the dissolution of TiO(2) particles. These insights into the mechanism of ETS-10 growth led to the successful development of a new synthesis route to the vanadosilicate AM-6 that involves the use of intermediates that contain three-membered ring species as an initiator. |
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