Nucleation and growth of zeolites and inorganic mesoporous solids: Molecular insights from magnetic resonance spectroscopy

Oxide Nanomaterials: Synthetic Developments, Mechanistic Studies, and Technological Innovations

“…[231,232] In situ NMR spectroscopy has, for example, also proven highly efficient to elucidate the nucleation and growth of nano-and mesoporous inorganic solids. [233] However, the signal sensitivity and spectral resolution of NMR spectra are highly dependent upon the natural abundance of the isotope under investigation. This situation makes in situ NMR spectroscopy an excellent method to investigate the nucleation and growth process of zeolites containing Si or/and Al.…”

Dynamics and Disorder in Surfactant-Templated Silicate Layers Studied by Solid-State NMR Dephasing Times and Correlated Line Shapes

“…3,4 The properties of these solids depend on their compositions, structures, and dynamics, often across several length scales, which are challenging to characterize, understand, and control. 5,6 Solid-state nuclear magnetic resonance (NMR) spectroscopy plays a crucial role in the characterization of these materials at a molecular level, complementing other methods, such as X-ray diffraction, electron microscopy, and bulk property measurements (see ref 7 for a recent review). Notably, solid-state NMR can provide quantitative and/or correlated molecular information on crystalline or amorphous organic or inorganic solids (see, for example, refs [8][9][10][11][12][13] and is therefore especially useful for the characterization of heterogeneous systems with different extents of order and disorder, including inorganic-organic hybrid materials.…”

Oxidische Nanomaterialien: Von der Synthese über den Mechanismus zur technologischen Innovation

“…Dennoch sei zuvor darauf verwiesen, dass auch mikroskopische Verfahren [231,232] und In-situ-NMR-Techniken inzwischen mit großem Erfolg angewendet werden, insbesondere zur Aufklärung der Bildungswege nano-und mesoporöser Materialien. [233] Die Signalempfindlichkeit und spektrale Auflösung der NMR-Spektroskopie hingegen sind im höchsten Maße abhängig von der natürlichen Häufigkeit der zu untersuchenden Isotope. Aufgrund dessen sind In-situ-NMR-Studien eine exzellente Methode, um die Keimbildung und Wachstumsprozesse von Silicium-und/oder Aluminium-haltigen Zeolithen zu untersuchen.…”