New insights into the size and support effects of γ-Al2O3supported Au catalysts for HCHO oxidation at room temperature

Bingbing Chen; Qi Zhao; Limei Yu; Ling Chen; Mark Crocker; Chuan Shi

doi:10.1039/d0cy00857e

New insights into the size and support effects of γ-Al₂O₃supported Au catalysts for HCHO oxidation at room temperature

Bingbing Chen, Qi Zhao, Limei Yu, Ling Chen, Mark Crocker, Chuan Shi

Producción científica: Article › revisión exhaustiva

14 Citas (Scopus)

Resumen

Strong metal support interaction (SMSI) between Au nanoparticles (NPs) and a non-reducible γ-Al2O3 support was revealed to affect HCHO oxidation at room temperature. Catalyst characterization by HRTEM and 27Al NMR revealed that Au NPs were encapsulated by the γ-Al2O3 support and that pentacoordinate Al3+ ions on the γ-Al2O3 surface acted as anchoring sites for Au nanoparticles. The SMSI in Au/γ-Al2O3 not only enhanced the dispersion of the Au NPs but also stabilized the NPs during the reaction. As a result, Au/γ-Al2O3 with strong SMSI exhibited high initial activity and stability in HCHO oxidation at room temperature. These findings provide new insights into the Au NP size and support effects of Au/γ-Al2O3 catalysts used for HCHO oxidation at room temperature.

Idioma original	English
Páginas (desde-hasta)	4571-4579
Número de páginas	9
Publicación	Catalysis Science and Technology
Volumen	10
N.º	14
DOI	https://doi.org/10.1039/d0cy00857e
Estado	Published - jul 21 2020

Nota bibliográfica

Publisher Copyright:
© 2020 The Royal Society of Chemistry.

Financiación

The work was supported by the National Key R&D Program of China (No. 2017YFA0700103), the National Natural Science Foundation of China (No. 21932002, 21872014, 21707015, 21577013), the Fundamental Research Funds for the Central Universities DUT19LK04 and the Natural Science Foundation of Liaoning Province (2019-ZD-0023).

Financiadores	Número del financiador
National Key Research and Development Program of China	2017YFA0700103
National Natural Science Foundation of China (NSFC)	21577013, 21707015, 21872014, 21932002
Natural Science Foundation of Liaoning Province	2019-ZD-0023
Fundamental Research Funds for the Central Universities	DUT19LK04

ASJC Scopus subject areas

Catalysis

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10.1039/d0cy00857e

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AU - Crocker, Mark

AU - Shi, Chuan

PY - 2020/7/21

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