Researchers have detected reactive gallium hydride species on the surface of gallium oxide

(2022). DOI: 10.1021 / jacs.2c01005″ width=”500″ height=”327″/>

Graphic abstract. attributed to him: Journal of the American Chemical Society (2022). DOI: 10.1021 / jacs.2c01005

Metal hydrates (MH), a critical but ubiquitous intermediate in a wide range of catalytic reactions, are important in the field of heterogeneous catalysis. However, the overall characterization and understanding of the types of MH remains a challenge.

Recently, a research team led by Professor HOU Guangjin of the Dalian Institute of Chemical Physics (DICP) of the Chinese Academy of Sciences (CAS) revealed the types of gallium and reactive hydrogen (Ga-H) on the surface of gallium oxide (Ga-H).2a3) using solid state Nuclear magnetic resonance (ssNMR).

This study was published in Journal of the American Chemical Society.

The researchers provided ssNMR evidence for surface Ga-H species generated on a practical nano Ga2a3 Oxide catalyst during direct H2 Activation and dehydrogenation reactions of propane.

They found that the complex 1The H NMR signature of the Ga-H species came from strong and dipole/quadpolar J junctions using NMR techniques and numerical simulation. They revealed comprehensive information on the structural formation and formation mechanism of these particular types of MH with complementary NMR and DFT analysis.

Moreover, they used 13ko2 Adsorption experiment to prove that Ga-H species were the main mediator in the CO hydrogenation process2.

“The analytical approach presented in this study could be extended to other MH analysis, and may be useful for designing more efficient Ga-based catalysts,” said Professor Hu.


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more information:
Hongyu Chen et al, Direct detection of reactive gallium-hydride species on Ga2a3 surface via solid-state nuclear magnetic resonance spectroscopy, Journal of the American Chemical Society (2022). DOI: 10.1021 / jacs.2c01005

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