Solid-state NMR spectra of protons and quadrupolar nuclei at 28.2 T: resolv-ing signatures of surface sites with fast magic angle spinning

15 September 2022, Version 1
This content is a preprint and has not undergone peer review at the time of posting.


Advances in solid-state nuclear magnetic resonance (NMR) methods and hardware offer expanding op-portunities for analysis of materials, interfaces, and surfaces. Here, we demonstrate the application of a very high magnetic field strength of 28.2 T and fast magic-angle-spinning rates (MAS, >40 kHz) to sur-face species relevant to catalysis. Specifically, we present as case studies the 1D and 2D solid-state NMR spectra of important catalyst and support materials, ranging from a well-defined silica-supported organometallic catalyst to dehydroxylated γ-alumina and zeolite solid acids. The high field and fast-MAS measurement conditions substantially improve spectral resolution and narrow NMR signals, which is particularly beneficial for solid-state 1D and 2D NMR analysis of 1H and quadrupolar nuclei such as 27Al at surfaces.


Solid-state NMR spectroscopy
high-field NMR
surface sites

Supplementary materials

Supporting information
Experimental section, computational details, further characterization, additional solid-state NMR results and analyses.


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