Hybrid Ni–Al layered double hydroxide/graphene composite supported gold nanoparticles for aerobic selective oxidation of benzyl alcohol

RSC Advances ◽  
2015 ◽  
Vol 5 (45) ◽  
pp. 36066-36074 ◽  
Author(s):  
M. Y. Miao ◽  
J. T. Feng ◽  
Q. Jin ◽  
Y. F. He ◽  
Y. N. Liu ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
High Activity ◽  
Benzyl Alcohol ◽  
Selective Oxidation ◽  
Au Catalyst ◽  
Graphene Composite ◽  
Oxidation Of Benzyl Alcohol ◽  
Supported Gold Nanoparticles ◽  
Supported Gold ◽  
Double Hydroxide

A NiAl-LDH/RGO composite-supported Au catalyst was synthesized and exhibited high activity and stability in the selective oxidation of benzyl alcohol.

Defect-rich Ni–Ti layered double hydroxide as a highly efficient support for Au nanoparticles in base-free and solvent-free selective oxidation of benzyl alcohol

2018 ◽  
Vol 47 (15) ◽  
pp. 5226-5235 ◽  
Author(s):  
Mengran Liu ◽  
Guoli Fan ◽  
Jiaying Yu ◽  
Lan Yang ◽  
Feng Li
Keyword(s):  
Benzyl Alcohol ◽  
Selective Oxidation ◽  
Layered Double Hydroxide ◽  
Au Nanoparticles ◽  
Solvent Free ◽  
Highly Efficient ◽  
Oxidation Of Benzyl Alcohol ◽  
Enhanced Activity ◽  
Double Hydroxide

Defect-rich Ni–Ti layered double hydroxide supported Au nanoparticles exhibited greatly enhanced activity in the oxidation of benzyl alcohol.

Selective oxidation of alcohols by supported gold nanoparticles: recent advances

RSC Advances ◽  
2016 ◽  
Vol 6 (34) ◽  
pp. 28688-28727 ◽  
Author(s):  
Anuj S. Sharma ◽  
Harjinder Kaur ◽  
Dipen Shah
Keyword(s):  
Gold Nanoparticles ◽  
Selective Oxidation ◽  
Alcohol Oxidation ◽  
Recent Advances ◽  
Oxidation Of Alcohols ◽  
Important Field ◽  
Commercially Important ◽  
Supported Gold Nanoparticles ◽  
Supported Gold

The review presents a commercially important field of alcohol oxidation using gold nanoparticles. It systematically discusses scope and limitation of various supports on the activity and selectivity of catalyst.

scholarly journals Bimetallic Gold-Silver Nanoparticles Supported on Zeolitic Imidazolate Framework-8 as Highly Active Heterogenous Catalysts for Selective Oxidation of Benzyl Alcohol into Benzaldehyde

Polymers ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1089 ◽  
Author(s):  
Lili Liu ◽  
Xiaojing Zhou ◽  
Yongmei Yan ◽  
Jie Zhou ◽  
Wenping Zhang ◽  
...  
Keyword(s):  
Benzyl Alcohol ◽  
Selective Oxidation ◽  
Cluster Structure ◽  
Core Shell ◽  
Zeolitic Imidazolate Framework ◽  
Highly Active ◽  
Oxidation Of Benzyl Alcohol ◽  
Ag Particles ◽  
Gold Silver ◽  
Supported Gold

The metal-organic zeolite imidazolate framework-8 (ZIF-8) supported gold-silver bimetallic catalysts with a core-shell structure (Au@Ag/ZIF-8 and Ag@Au/ZIF-8) and cluster structure (AuAg/ZIF-8) were successfully prepared by the deposition-redispersion method. Energy dispersive X-ray spectroscopy (EDS) elemental mapping images displayed that in the Au@Ag/ZIF-8 catalyst, Ag atoms were deposited on an exposed Au surface, and core-shell structured Au@Ag particles with highly dispersed Ag as the shell were formed. Additionally, the XPS investigation at gold 4f levels and silver 3d levels indicated that the Au and Ag particles of Au@Ag/ZIF-8, Ag@Au/ZIF-8, and AuAg/ZIF-8 were in a zero valence state. Among the resultant catalysts obtained in this study, Ag@Au/ZIF-8 catalysts showed the highest catalytic activity for the selective oxidation of benzyl alcohol, followed by AuAg/ZIF-8 and Au@Ag/ZIF-8. The turnover frequency (TOF) values were in the order of Ag@Au/ZIF-8 (28.2 h−1) > AuAg/ZIF-8 (25.0 h−1) > Au@Ag/ZIF-8 (20.0 h−1) at 130 °C within 1 h under 8 bar O2 when using THF as solvent. The catalysts of Au@Ag/ZIF-8 and Ag@Au/ZIF-8 with core–shell structures have higher benzaldehyde selectivities (53.0% and 53.3%) than the AuAg/ZIF-8 catalyst (35.2%) in the selective oxidation of benzyl alcohol into benzaldehyde. The effect of the solvent, reaction temperature, reaction time, and reaction pressure on benzyl alcohol conversion and benzaldehyde selectivity in benzyl alcohol selective oxidation over Au@Ag/ZIF-8, Ag@Au/ZIF-8, and AuAg/ZIF-8 were also investigated. All of the catalysts showed excellent performance at 130 °C under 8 bar O2 within 1 h when using THF as the solvent in the selective oxidation of benzyl alcohol to benzaldehyde. Moreover, the catalysts can be easily recycled and used repetitively at least four times.

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