Nearly atomic precise gold nanoclusters on nickel-based layered double hydroxides for extraordinarily efficient aerobic oxidation of alcohols

2016 ◽  
Vol 6 (12) ◽  
pp. 4090-4104 ◽  
Author(s):  
Shuai Wang ◽  
Shuangtao Yin ◽  
Gaowen Chen ◽  
Lun Li ◽  
Hui Zhang
Keyword(s):  
Layered Double Hydroxides ◽  
Aerobic Oxidation ◽  
Gold Nanoclusters ◽  
Alcohol Oxidation ◽  
Oxidation Of Alcohols ◽  
Au Cluster ◽  
Double Hydroxides

Nearly atomic precise Au25/NixAl-LDH catalysts obtained via adsorption of Au25Capt18 onto predispersed NixAl-LDH following proper calcination show extraordinary alcohol oxidation property due to ultrafine Au cluster, ordered LDH layer and strong Au25–LDH synergy.

Aerobic Oxidation of Alcohols on Au Nanocatalyst: Insight to the Roles of the Ni-Al Layered Double Hydroxides Support

ChemCatChem ◽  
2014 ◽  
Vol 6 (6) ◽  
pp. 1737-1747 ◽  
Author(s):  
Jiang Wang ◽  
Xianjun Lang ◽  
Bao Zhaorigetu ◽  
Meilin Jia ◽  
Jun Wang ◽  
...  
Keyword(s):  
Layered Double Hydroxides ◽  
Aerobic Oxidation ◽  
Oxidation Of Alcohols ◽  
Double Hydroxides

Enhanced metal–support interactions between Pd NPs and ZrSBA-15 for efficient aerobic benzyl alcohol oxidation

RSC Advances ◽  
2016 ◽  
Vol 6 (74) ◽  
pp. 70424-70432 ◽  
Author(s):  
Ran Ji ◽  
Shangru Zhai ◽  
Wei Zheng ◽  
Zuoyi Xiao ◽  
Qingda An ◽  
...  
Keyword(s):  
Benzyl Alcohol ◽  
Aerobic Oxidation ◽  
Alcohol Oxidation ◽  
Palladium Nanoparticle ◽  
Mesoporous Catalysts ◽  
Benzyl Alcohol Oxidation ◽  
Catalytic Materials ◽  
Oxidation Of Alcohols ◽  
Metal Support ◽  
Metal Support Interactions

Towards the aerobic oxidation of alcohols, palladium nanoparticle immobilized mesoporous catalysts have been extensively investigated; however, the preparation of efficient catalytic materials without using complexing moieties remains a challenge.

Controlled synthesis of monodisperse silver nanoparticles supported layered double hydroxide catalyst

RSC Advances ◽  
2015 ◽  
Vol 5 (17) ◽  
pp. 13239-13245 ◽  
Author(s):  
D. A. Islam ◽  
D. Borah ◽  
H. Acharya
Keyword(s):  
Silver Nanoparticles ◽  
Catalytic Activity ◽  
Layered Double Hydroxide ◽  
Layered Double Hydroxides ◽  
Alcohol Oxidation ◽  
High Catalytic Activity ◽  
Controlled Synthesis ◽  
Ag Nps ◽  
Double Hydroxide ◽  
Double Hydroxides

Monodisperse silver nanoparticles supported layered double hydroxides (Ag NPs–LDH) were preferentially deposited on the outer surfaces of pillared LDH offered a high catalytic activity on alcohol oxidation.

scholarly journals Metal-Support Synergy of Supported Gold Nanoclusters in Selective Oxidation of Alcohols

Catalysts ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 107
Author(s):  
Lu Liu ◽  
Huayin Li ◽  
Yuan Tan ◽  
Xingkun Chen ◽  
Ronghe Lin ◽  
...  
Keyword(s):  
Particle Size ◽  
Aerobic Oxidation ◽  
Gold Nanoclusters ◽  
Gold Catalysts ◽  
Photoelectron Spectra ◽  
Base Property ◽  
Gold Particles ◽  
X Ray ◽  
Oxidation Of Alcohols ◽  
Metal Support

Gold catalysts have been reported to exhibit good performance in aerobic oxidation of alcohols, but the intrinsic origin of the catalytic reactivity is still illusive. The catalyst preparation method, the morphology of the gold particles, and even the support might be key factors that determine the activity. Here, we prepared a series of gold catalysts with different supports, i.e., the hydrotalcite (HT), ZnO, MgO, Al2O3, and SiO2, by using the atomically controlled Au25 nanoclusters (NCs) as the gold precursor. The characterization results of the X-ray diffraction (XRD), UV-vis and transmission electron microscopy (TEM) show that the gold particles were mostly uniformly distributed on the supports, with a mean particle size within 3 nm. In aerobic oxidation of benzyl alcohol, the MgAl-HT- and Al2O3-supported Au25 NCs display good performances, with turnover frequency (TOF) values of ~2927 and 2892 h−1, respectively, whereas the SiO2-, MgO-, and ZnO-supported analogues show much inferior activity. The high resolution TEM and X-ray photoelectron spectra (XPS) results suggest that the interactions between gold and the supports in different samples are differing, which influences the morphology and the nature of gold. Our results further point to the importance of acid-base property of the support and the metal-support synergy rather than the gold particle size alone in achieving high-performance in selective alcohol oxidation. Moreover, this work provided a good way to design gold catalysts with controllable sizes that is crucial for understanding the reaction process in aerobic oxidation of alcohol.

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