scholarly journals Pd Nanoparticles Supported on Amine-Functionalized MgAl Layered Double Hydroxides for Solvent-Free Aerobic Oxidation of Benzyl Alcohol

Catalysts ◽  
2019 ◽  
Vol 9 (12) ◽  
pp. 1038 ◽  
Author(s):  
Xiufeng Shi ◽  
Bin Xing ◽  
Wenya Guo ◽  
Huifang Zhang ◽  
Binbin Fan ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Benzyl Alcohol ◽  
Layered Double Hydroxides ◽  
Pd Nanoparticles ◽  
Solvent Free ◽  
X Ray ◽  
Amine Functionalized ◽  
Oxidation Of Benzyl Alcohol ◽  
Surface Basicity ◽  
Double Hydroxides

Pd nanoparticles (NPs) supported on amine-functionalized layered double hydroxides (LDHs) (Pd/NH2-LDH-NS) were successfully obtained by implanting aminopropyltriethoxysilane (APTS) on MgAl LDH nanosheets (LDH-NS), followed by impregnating [Pd(NH3)4]Cl2 and reduction with NaBH4. The physicochemical characteristics of the obtained Pd/NH2-LDH-NS were characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR),, N2 adsorption–desorption, inductive coupled plasma (ICP), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy(XPS), and their catalytic performance was tested in the selective oxidation of benzyl alcohol with molecular oxygen under solvent-free and base-free conditions. The results showed that the implanted –NH2 groups can promote the dispersion of the supported Pd NPs via complexation of the implanted –NH2 groups to Pd NPs, and they can increase the surface basicity of the catalysts, thus enhancing the catalytic activity and selectivity to benzylaldehyde. Pd/NH2-LDH-NS exhibited enhanced catalytic activity (31.6%) and selectivity (>98%) compared to the corresponding Pd/LDH-NS, Pd/LDH, Pd/SiO2, and Pd/Al2O3. Moreover, Pd/NH2-LDH-NS was remarkably stable and could be reused at least four times without a significant loss in activity and selectivity.

On the selective aerobic oxidation of benzyl alcohol with Pd/Au-nanoparticles in batch and flow

2014 ◽  
Vol 3 (1) ◽  
pp. 99-110 ◽  
Author(s):  
Hannes Alex ◽  
Norbert Steinfeldt ◽  
Klaus Jähnisch ◽  
Matthias Bauer ◽  
Sandra Hübner
Keyword(s):  
Catalytic Activity ◽  
Benzyl Alcohol ◽  
Aerobic Oxidation ◽  
X Ray ◽  
X Ray Scattering ◽  
Oxidation Of Benzyl Alcohol ◽  
Transmission Electron ◽  
Vis Spectroscopy ◽  
Selective Aerobic Oxidation

AbstractNanoparticles (NP) have specific catalytic properties, which are influenced by parameters like their size, shape, or composition. Bimetallic NPs, composed of two metal elements can show an improved catalytic activity compared to the monometallic NPs. We, herein, report on the selective aerobic oxidation of benzyl alcohol catalyzed by unsupported Pd/Au and Pd NPs at atmospheric pressure. NPs of varying compositions were synthesized and characterized by UV/Vis spectroscopy, transmission electron microscopy (TEM), and small-angle X-ray scattering (SAXS). The NPs were tested in the model reaction regarding their catalytic activity, stability, and recyclability in batch and continuous procedure. Additionally, in situ extended X-ray absorption fine structure (EXAFS) measurements were performed in order to get insight in the process during NP catalysis.

Biosynthesized Bimetallic Au–Pd Nanoparticles Supported on TiO2 for Solvent-Free Oxidation of Benzyl Alcohol

2014 ◽  
Vol 2 (7) ◽  
pp. 1752-1759 ◽  
Author(s):  
Yingling Hong ◽  
Xiaolian Jing ◽  
Jiale Huang ◽  
Daohua Sun ◽  
Tareque Odoom-Wubah ◽  
...  
Keyword(s):  
Benzyl Alcohol ◽  
Pd Nanoparticles ◽  
Solvent Free ◽  
Oxidation Of Benzyl Alcohol ◽  
Free Oxidation

Facile and surfactant-free synthesis of supported Pd nanoparticles on hydrotalcite for oxidation of benzyl alcohol

RSC Advances ◽  
2015 ◽  
Vol 5 (91) ◽  
pp. 74907-74915 ◽  
Author(s):  
Yufei He ◽  
Pengfei Yang ◽  
Jiaxuan Fan ◽  
Yanan Liu ◽  
Yiyun Du ◽  
...  
Keyword(s):  
Particle Size ◽  
Benzyl Alcohol ◽  
Average Particle Size ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
Solvent Free ◽  
Average Particle ◽  
Oxidation Of Benzyl Alcohol ◽  
Free Oxidation ◽  
Supported Pd

A Pd/HT catalyst with an average particle size of 2.3 nm and an electron-deficient Pd surface is synthesized by modified deposition–precipitation, and exhibits enhanced catalytic performance in the solvent-free oxidation of benzyl alcohol.

ZIF-derived porous carbon supported Pd nanoparticles within mesoporous silica shells: sintering- and leaching-resistant core–shell nanocatalysts

2017 ◽  
Vol 53 (68) ◽  
pp. 9490-9493 ◽  
Author(s):  
Shaolong Zhang ◽  
Aijuan Han ◽  
Yanliang Zhai ◽  
Jian Zhang ◽  
Weng-Chon Cheong ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Mesoporous Silica ◽  
Benzyl Alcohol ◽  
Porous Carbon ◽  
Pd Nanoparticles ◽  
Core Shell ◽  
Oxidation Of Benzyl Alcohol ◽  
Supported Pd

We prepared sintering- and leaching-resistant core–shell nanocatalysts which exhibited excellent catalytic activity and recyclability for oxidation of benzyl alcohol.

scholarly journals Three-dimensional N-doped graphene aerogel-supported Pd nanoparticles as efficient catalysts for solvent-free oxidation of benzyl alcohol

RSC Advances ◽  
2019 ◽  
Vol 9 (17) ◽  
pp. 9620-9628 ◽  
Author(s):  
Qiuli Wei ◽  
Tongjun Liu ◽  
Yuanyuan Wang ◽  
Liyi Dai
Keyword(s):  
Benzyl Alcohol ◽  
Three Dimensional ◽  
Pd Nanoparticles ◽  
Solvent Free ◽  
Noble Metal Catalysts ◽  
Surface Areas ◽  
Oxidation Of Benzyl Alcohol ◽  
Doped Graphene ◽  
Free Oxidation ◽  
Supported Pd

3D Pd/NRGO with large surface areas and abundant porous structures was prepared, which served as a novel support to enhance the catalytic properties of noble metal catalysts for the solvent-free selective oxidation of benzyl alcohol.

Monodisperse-porous cerium oxide microspheres as a new support with appreciable catalytic activity for a composite catalyst in benzyl alcohol oxidation

2021 ◽  
Author(s):  
Kadriye Özlem Hamaloğlu ◽  
Rukiye Babacan Tosun ◽  
Serap Ulu ◽  
Hakan Kayi ◽  
Cengiz Kavaklı ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Benzyl Alcohol ◽  
Cerium Oxide ◽  
Sol Gel ◽  
Alcohol Oxidation ◽  
Pd Nanoparticles ◽  
Composite Catalyst ◽  
Benzyl Alcohol Oxidation ◽  
Supported Pd

A synergistic catalyst in the form of monodisperse-porous CeO2 microspheres supported Pd nanoparticles (Pd NPs) was synthesized. CeO2 microspheres 4 μm in size were obtained by a newly developed “sol-gel...

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