Pd nanoparticles supported on amino-functionalized magnetic mesoporous silica nanotubes: a highly selective catalyst for the catalytic hydrodechlorination reaction

RSC Advances ◽  
2016 ◽  
Vol 6 (80) ◽  
pp. 76582-76589 ◽  
Author(s):  
Shiling Zhao ◽  
Chang Zhao ◽  
Xinzhe Li ◽  
Feng Li ◽  
Lixin Jiao ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
Silica Nanotubes ◽  
Selective Catalyst ◽  
Catalytic Hydrodechlorination ◽  
Amine Functionalized ◽  
Highly Dispersed ◽  
Magnetic Mesoporous Silica

Highly dispersed Pd nanoparticles supported on amine-functionalized magnetic mesoporous silica nanotubes are prepared. This catalyst exhibits remarkable catalytic performance for the HDC reaction.

scholarly journals Hydrogenative Ring-Rearrangement of Furfural to Cyclopentanone over Pd/UiO-66-NO2 with Tunable Missing-Linker Defects

Molecules ◽  
2021 ◽  
Vol 26 (19) ◽  
pp. 5736
Author(s):  
Chunhua Wang ◽  
Zhiquan Yu ◽  
Yuhao Yang ◽  
Zhichao Sun ◽  
Yao Wang ◽  
...  
Keyword(s):  
Thermal Treatment ◽  
High Selectivity ◽  
Reaction System ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
Lewis Acidity ◽  
Bifunctional Catalysts ◽  
Defect Sites ◽  
Highly Dispersed ◽  
Key Factor

Upgrading furfural (FAL) to cyclopentanone (CPO) is of great importance for the synthesis of high-value chemicals and biomass utilization. The hydrogenative ring-rearrangement of FAL is catalyzed by metal-acid bifunctional catalysts. The Lewis acidity is a key factor in promoting the rearrangement of furan rings and achieving a high selectivity to CPO. In this work, highly dispersed Pd nanoparticles were successfully encapsulated into the cavities of a Zr based MOF, UiO-66-NO2, by impregnation using a double-solvent method (DSM) followed by H2 reduction. The obtained Pd/UiO-66-NO2 catalyst showed a significantly better catalytic performance in the aforementioned reaction than the Pd/UiO-66 catalyst due to the higher Lewis acidity of the support. Moreover, by using a thermal treatment. The Lewis acidity can be further increased through the creating of missing-linker defects. The resulting defective Pd/UiO-66-NO2 exhibited the highest CPO selectivity and FAL conversion of 96.6% and 98.9%, respectively. In addition, the catalyst was able to maintain a high activity and stability after four consecutive runs. The current study not only provides an efficient catalytic reaction system for the hydrogenative ring-rearrangement of furfural to cyclopentanone but also emphasizes the importance of defect sites.

scholarly journals Synthesis of highly dispersed Pd nanoparticles supported on multi-walled carbon nanotubes and their excellent catalytic performance for oxidation of benzyl alcohol

2015 ◽  
Vol 5 (8) ◽  
pp. 4144-4153 ◽  
Author(s):  
Vijay M. Shinde ◽  
Emmanuel Skupien ◽  
Michiel Makkee
Keyword(s):  
Benzyl Alcohol ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
Simple Approach ◽  
Capping Agent ◽  
Oxidation Of Benzyl Alcohol ◽  
Highly Dispersed ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Excellent Catalytic Performance

A simple approach to synthesize highly dispersed Pd nanoparticles on CNTs without a capping agent is presented which exhibits high activity and selectivity for selective oxidation of benzyl alcohol.

Programmed synthesis of magnetic mesoporous silica nanotubes with tiny Au nanoparticles: a highly novel catalyst system

2014 ◽  
Vol 2 (27) ◽  
pp. 10485 ◽  
Author(s):  
Xinzhe Li ◽  
Xiao-Hang Zhu ◽  
Yiyun Fang ◽  
Hong-Lei Yang ◽  
Xingchun Zhou ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Au Nanoparticles ◽  
Catalyst System ◽  
Silica Nanotubes ◽  
Novel Catalyst ◽  
Magnetic Mesoporous Silica

Ultrasmall palladium nanoparticles supported on amine-functionalized SBA-15 efficiently catalyze hydrogen evolution from formic acid

2014 ◽  
Vol 2 (48) ◽  
pp. 20444-20449 ◽  
Author(s):  
K. Koh ◽  
J.-E. Seo ◽  
J. H. Lee ◽  
A. Goswami ◽  
C. W. Yoon ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Formic Acid ◽  
Ambient Temperature ◽  
Hydrogen Evolution ◽  
Palladium Nanoparticles ◽  
Pd Nanoparticles ◽  
Functionalized Mesoporous Silica ◽  
Amine Functionalized

Amine-functionalized mesoporous silica-supported ultrasmall Pd nanoparticles catalyze hydrogen evolution from formic acid at ambient temperature.

scholarly journals The Effect of Shape-Controlled Pt and Pd Nanoparticles on Selective Catalytic Hydrodechlorination of Trichloroethylene

Catalysts ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1314
Author(s):  
Oğuz Yunus Sarıbıyık ◽  
Christian Weilach ◽  
Selahattin Serin ◽  
Günther Rupprechter
Keyword(s):  
Morphological Characteristics ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
X Ray Diffraction ◽  
Catalytic Hydrodechlorination ◽  
Nanoparticle Shape ◽  
Transmission Electron ◽  
Shape Controlled ◽  
Ethylene Selectivity ◽  
Distinct Morphology

Tailoring the shape of nanoscale materials enables obtaining morphology-controlled surfaces exhibiting specific interactions with reactants during catalytic reactions. The specifics of nanoparticle surfaces control the catalytic performance, i.e., activity and selectivity. In this study, shape-controlled Platinum (Pt) and Palladium (Pd) nanoparticles with distinct morphology were produced, i.e., cubes and cuboctahedra for Pt and spheres and polyhedra/multiple-twins for Pd, with (100), (111 + 100), curved/stepped and (111) facets, respectively. These particles with well-tuned surfaces were subsequently deposited on a Zirconium oxide (ZrO2) support. The morphological characteristics of the particles were determined by high resolution transmission electron microscopy (HR-TEM) and X-ray diffraction (XRD), while their adsorption properties were investigated by Fourier transform infrared spectroscopy (FTIR) of CO adsorbed at room temperature. The effect of the nanoparticle shape and surface structure on the catalytic performance in hydrodechlorination (HDCl) of trichloroethylene (TCE) was examined. The results show that nanoparticles with different surface orientations can be employed to affect selectivity, with polyhedral and multiply-twinned Pd exhibiting the best ethylene selectivity.

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