Recent advances on surface metal hydrides studied by solid-state nuclear magnetic resonance spectroscopy
1State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, 2011-Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023, China.
Metal hydrides on surfaces are crucial in catalysis but hard to study. Solid-state nuclear magnetic resonance (ssNMR) spectroscopy offers atomic-level insights into these metal hydride species, advancing heterogeneous catalysis research.
Area of Science:
- Surface Science
- Catalysis
- Spectroscopy
Background:
- Metal hydrides (M-H) on solid surfaces are key intermediates in heterogeneous catalysis.
- Detailed characterization of these surface species remains a significant challenge.
Purpose of the Study:
- To review the application of solid-state nuclear magnetic resonance (ssNMR) spectroscopy for characterizing surface metal hydrides.
- To discuss the opportunities and challenges in this field.
Main Methods:
- Solid-state nuclear magnetic resonance (ssNMR) spectroscopy.
- Characterization of surface metal hydrides on various solid catalysts.
Main Results:
- ssNMR provides atomic-level structural and chemical bonding information on surface M-H species.
- Successful applications demonstrated on supported single-site catalysts, metal oxides, and zeolites.
Conclusions:
- ssNMR is a powerful tool for understanding surface metal hydrides in heterogeneous catalysis.
- Future advancements in ssNMR technology will further enable exploration of these critical species.
More Related Videos
14:55Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy
Published on: September 17, 2017
09:37Imine Metathesis by Silica-Supported Catalysts Using the Methodology of Surface Organometallic Chemistry
Published on: October 18, 2019
Related Concept Videos
01:182D NMR: Overview of Heteronuclear Correlation Techniques
01:192D NMR: Heteronuclear Single-Quantum Correlation Spectroscopy (HSQC)
01:16Other Nuclides: 31P, 19F, 15N NMR
While fluorine-19 and phosphorous-31 have high natural abundances (100%) and positive gyromagnetic ratios, nitrogen-15 has a low natural abundance and a negative gyromagnetic ratio. However, nitrogen-15 is still preferred over nitrogen-14 (which has a...
01:17Chemical Shift: Internal References and Solvent Effects
The internal reference compound generally used in NMR spectroscopy is tetramethylsilane (TMS). TMS is preferred because it is chemically inert, soluble in NMR solvents, and easily removable. Also, the highly shielded methyl protons in TMS yield an intense...