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.

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...

Nitrogen-enriched porous carbon supported Pd-nanoparticles as an efficient catalyst for the transfer hydrogenation of alkenes

2018 ◽  
Vol 42 (20) ◽  
pp. 16823-16828 ◽  
Author(s):  
Jie Li ◽  
Xin Zhou ◽  
Ning-Zhao Shang ◽  
Cheng Feng ◽  
Shu-Tao Gao ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Porous Carbon ◽  
Pd Nanoparticles ◽  
Transfer Hydrogenation ◽  
High Catalytic Activity ◽  
Efficient Catalyst ◽  
Supported Pd

Well-dispersed Pd nanoparticles supported on nitrogen-enriched porous carbon were prepared and this material displayed excellent catalytic activity for the transfer hydrogenation of alkenes. The Pd@NPC catalyst exhibited high catalytic activity and stability for the hydrogenation of alkenes.

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.

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.

scholarly journals Catalytic oxidation of benzyl alcohol on Au or Au–Pd nanoparticles confined in mesoporous silica

2009 ◽  
Vol 92 (1-2) ◽  
pp. 202-208 ◽  
Author(s):  
Chun Yan Ma ◽  
Bao Juan Dou ◽  
Jin Jun Li ◽  
Jie Cheng ◽  
Qin Hu ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Benzyl Alcohol ◽  
Catalytic Oxidation ◽  
Pd Nanoparticles ◽  
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.

scholarly journals Influence of Co-Precipitation Agent on the Structure, Texture and Catalytic Activity of Au-CeO2 Catalysts in Low-Temperature Oxidation of Benzyl Alcohol

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 641
Author(s):  
Lukasz Wolski ◽  
Grzegorz Nowaczyk ◽  
Stefan Jurga ◽  
Maria Ziolek
Keyword(s):  
Gold Nanoparticles ◽  
Catalytic Activity ◽  
Low Temperature ◽  
Benzyl Alcohol ◽  
Low Temperature Oxidation ◽  
Temperature Oxidation ◽  
Oxidation Of Benzyl Alcohol ◽  
Key Factor ◽  
Au Particle Size ◽  
Co Precipitation

The aim of the study was to establish the influence of a co-precipitation agent (i.e., NaOH–immediate precipitation; hexamethylenetetramine/urea–gradual precipitation and growth of nanostructures) on the properties and catalytic activity of as-synthesized Au-CeO2 nanocomposites. All catalysts were fully characterized with the use of XRD, nitrogen physisorption, ICP-OES, SEM, HR-TEM, UV-vis, XPS, and tested in low-temperature oxidation of benzyl alcohol as a model oxidation reaction. The results obtained in this study indicated that the type of co-precipitation agent has a significant impact on the growth of gold species. Immediate co-precipitation of Au-CeO2 nanostructures with the use of NaOH allowed obtainment of considerably smaller and more homogeneous in size gold nanoparticles than those formed by gradual co-precipitation and growth of Au-CeO2 nanostructures in the presence of hexamethylenetetramine or urea. In the catalytic tests, it was established that the key factor promoting high activity in low-temperature oxidation of benzyl alcohol was size of gold nanoparticles. The highest conversion of the alcohol was observed for the catalyst containing the smallest Au particle size (i.e., Au-CeO2 nanocomposite prepared with the use of NaOH as a co-precipitation agent).

scholarly journals Enhanced Selective Oxidation of Benzyl Alcohol via In Situ H2O2 Production over Supported Pd-Based Catalysts

ACS Catalysis ◽  
2021 ◽  
pp. 2701-2714
Author(s):  
Caitlin M. Crombie ◽  
Richard J. Lewis ◽  
Rebekah L. Taylor ◽  
David J. Morgan ◽  
Thomas E. Davies ◽  
...  
Keyword(s):  
Benzyl Alcohol ◽  
Selective Oxidation ◽  
H2o2 Production ◽  
Oxidation Of Benzyl Alcohol ◽  
Supported Pd
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