Nuclear magnetic resonance spectroscopy for in situ monitoring of porous materials formation under hydrothermal conditions

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Abstract

The employment of nuclear magnetic resonance (NMR) spectroscopy for studying crystalline porous materials formation is reviewed in the context of the development of in situ methodologies for the observation of the real synthesis medium, with the aim of unraveling the nucleation and growth processes mechanism. Both liquid and solid state NMR techniques are considered to probe the local environment at molecular level of the precursor species either soluble in the liquid phase or present in the reactive gel. Because the mass transport between the liquid and solid components of the heterogeneous system plays a key role in the synthesis course, the two methods provide unique insights and are complementary. Recent technological advances for hydrothermal conditions NMR are detailed and their applications to zeolite and related materials crystallization are illustrated. Achievements in the field are exemplified with some representative studies of relevance to zeolites, aluminophosphate zeotypes, and metal-organic frameworks.

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APA

Haouas, M. (2018, August 12). Nuclear magnetic resonance spectroscopy for in situ monitoring of porous materials formation under hydrothermal conditions. Materials. MDPI AG. https://doi.org/10.3390/ma11081416

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