NDLI: Flower-like Au/Ni–Al hydrotalcite with hierarchical pore structure as a multifunctional catalyst for catalytic oxidation of alcohol

Content Provider	Royal Society of Chemistry (RSC)
Author	Feng, J. T. Du, Y. Y. Zhang, N. Jin, Q. He, Y. F. Li, D. Q.
Copyright Year	2015
Abstract	Flower-like hierarchical Au/NiAl-LDH catalysts were synthesized for selective oxidation of alcohols. The abundant hydrogen vacancies at the edge of the flowers as nucleation centers contributed to the uniform dispersion of Au NPs. The confinement effect of the hierarchical pores promoted 60% higher activity than the common Au/NiAl-LDH nanoparticle catalyst in the oxidation of benzyl alcohol by heightening the effective collisions between substrates and active sites. The evolution process of the hierarchical pores in the support was further proposed. Moreover, the reaction mechanism of the cooperation among Brønsted base sites, NiIII coordinatively unsaturated metal sites and isolated gold cations was concretely proved. In the oxidation of other typical alcoholic substrates, the flower-like catalyst showed higher activity than the common nanoparticle one except for linear alcohols, which could be attributed to the shape selectivity of straight macropores.
Starting Page	3216
Ending Page	3225
Page Count	10
File Format	HTM / HTML PDF
ISSN	20444753
Volume Number	5
Issue Number	6
Journal	Catalysis Science & Technology
DOI	10.1039/c5cy00160a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Nucleation Hydrogen Nanoparticle Reaction mechanism Benzyl alcohol
Content Type	Text
Resource Type	Article
Subject	Catalysis

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Flower-like Au/Ni–Al hydrotalcite with hierarchical pore structure as a multifunctional catalyst for catalytic oxidation of alcohol