Application of Multinuclear MAS NMR for the in situ Monitoring of Hydrothermal Synthesis of Zeolites. Issue 57 (15th September 2021)

• Record Type: Journal Article
• Authors: Ivanova, Irina I.; Kolyagin, Yury G.
• Is Part Of: Chemistry. Volume 27:Issue 57(2021)
• Page Start: 14143
• Page End: 14167
• Publication Date: 2021-09-15
• Subjects: hydrothermal synthesis -- in situ MAS NMR -- mechanisms of nucleation and crystal growth -- molecular sieves -- zeolites; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.202101797
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: In situ MAS NMR studies on the monitoring of hydrothermal synthesis of zeolites are reviewed. The first part of the review contains information on the experimental techniques used for the in situ NMR studies in static and MAS conditions. In the second part, the main capabilities of the in situ 1 H, 11 B, 13 C, 14 N, 19 F, 23 Na, 27 Al, 29 Si and 31 P MAS NMR for the elucidation of the mechanism of hydrothermal synthesis of zeolites are examined and the data on NMR lines identification are summarized. In the last part the main application areas of the techniques are considered and illustrated with examples taken from the mechanistic studies of zeolites A, X, MFI and BEA synthesis. A cross‐reference index between the materials studied, the experimental approaches used, the mechanistic information obtained, and the corresponding literature sources is established. Abstract : The potential of in situ multinuclear MAS NMR spectroscopy for monitoring hydrothermal synthesis of zeolites is demonstrated in the Review. The technique enables the detection of intermediate species stable only under hydrothermal conditions, provides information on the kinetics of synthesis and gives insight into the mechanism of gel formation, gel aging, crystal nucleation and growth.