Effective Pd/C catalyst for chlorobenzene and hexachlorobenzene hydrodechlorination by direct pyrolysis of sawdust impregnated with palladium nitrate

2016 ◽  
Vol 77 ◽  
pp. 37-41 ◽  
Author(s):  
S.V. Klokov ◽  
E.S. Lokteva ◽  
E.V. Golubina ◽  
K.I. Maslakov ◽  
A.V. Levanov ◽  
...  
Keyword(s):  
Palladium Nitrate

anti-Hydrosilylation Reactions of Alkynes Catalyzed by Palladium Nitrate.

ChemInform ◽  
2006 ◽  
Vol 37 (19) ◽  
Author(s):  
Dong Hwan Kim ◽  
Young-ae W. Park
Keyword(s):  
Palladium Nitrate

Chlorobenzene hydrodechlorination catalyst prepared via the pyrolysis of sawdust impregnated with palladium nitrate

2015 ◽  
Vol 56 (6) ◽  
pp. 764-773 ◽  
Author(s):  
E. S. Lokteva ◽  
E. V. Golubina ◽  
M. V. Antonova ◽  
S. V. Klokov ◽  
K. I. Maslakov ◽  
...  
Keyword(s):  
Palladium Nitrate

scholarly journals Palladium Oxide Nanoparticles: Preparation, Characterization and Catalytic Activity Evaluation

Coatings ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 207 ◽  
Author(s):  
Maurizio Muniz-Miranda ◽  
Angela Zoppi ◽  
Francesco Muniz-Miranda ◽  
Nicola Calisi
Keyword(s):  
Catalytic Activity ◽  
Simple Procedure ◽  
Aqueous Suspension ◽  
Palladium Oxide ◽  
Colloidal Nanoparticles ◽  
Oxide Nanoparticles ◽  
Visible Absorption ◽  
Palladium Nitrate ◽  
Tem Microscopy ◽  
Uv Visible

Stable palladium oxide nanoparticles were prepared in aqueous suspension with a very simple procedure, by dissolving palladium nitrate in water at a concentration around 10−4 M. UV-visible absorption spectroscopy was adopted to follow the formation of these nanoparticles, which were characterized by TEM microscopy, along with XRD, XPS and Raman measurements. DFT calculations allowed to interpret the Raman data and to clarify the species present at the surface of the nanoparticles. The catalytic activity of the latter was evaluated by monitoring the reduction of p-nitrophenol to p-aminophenol. This investigation paves the way to the use of these colloidal nanoparticles in processes of heterogeneous catalysis, in particular those concerning the catalytic degradation of aromatic derivatives that represent a serious danger for the environment as pollutants, as in the case of p-nitrophenol.

Comparative investigation of a Pd/Al2O3 catalyst system with TEM and STEM

1995 ◽  
Vol 53 ◽  
pp. 694-695
Author(s):  
D. R. Liu ◽  
S.J. Pennycook ◽  
M. H. Yao ◽  
T. E. Hoost
Keyword(s):  
Low Cost ◽  
Nitrate Solution ◽  
Analytical Electron Microscopy ◽  
Catalyst System ◽  
Comparative Investigation ◽  
Catalyst Characterization ◽  
Particle Size Determination ◽  
Palladium Nitrate ◽  
Wide Availability ◽  
Z Contrast

Pd-only catalysts are attractive for automotive applications because of the low cost and wide availability of Pd compared with that of Pt and Rh. Analytical electron microscopy may be used to investigate the dispersion, which is a very important parameter in catalyst characterization, of the Pd particles on γ-Al2O3 supports. It was of interest to compare how two different techniques, TEM and STEM, might be used for the Pd-particle size determination in a model catalyst. The model system of 1wt%Pd/γ-Al2O3 used in the present study was prepared by the incipient wetness technique from a palladium nitrate solution. It was then dried at 120°C and calcined at 400°C, followed by steam aging at 600 °C for 24 hours. The TEM used was a JEOL 2000FX operated at 200 kV whereas the STEM used was a VG Microscopes HB-501UX operated in the Z-contrast mode at 100 kV.

Generation of silver/palladium nanoparticles by liquid flame spray

2004 ◽  
Vol 19 (5) ◽  
pp. 1544-1550 ◽  
Author(s):  
H. Keskinen ◽  
J.M. Mäkelä ◽  
M. Vippola ◽  
M. Nurminen ◽  
J. Liimatainen ◽  
...  
Keyword(s):  
High Temperature ◽  
Mass Flow ◽  
Pure Metal ◽  
Molar Ratio ◽  
Flame Spray ◽  
Molar Ratios ◽  
Palladium Nitrate ◽  
Aerosol Instrumentation ◽  
Silver Palladium ◽  
Liquid Flame Spray

Ag–Pd alloy nanoparticles have been generated from silver and palladium nitrate precursors using a high temperature aerosol method, the liquid flame spray (LFS) process. In the LFS process, a spray aerosol of precursor liquid is introduced into a high-temperature H2–O2 flame. The primary micron-sized spray droplets evaporatein the flame, and the final particulate product is a result of the nucleation of the pure metal vapors shortly after the flame. In the study, three Ag–Pd molar ratios—10:90, 50:50, and 90:10—were used in the precursor. As a result of the synthesis, metalalloy nanoparticles with practically the same concentration ratios, correspondingly, were produced with the method. In the experiments, metal mass flow rates of 0.01–0.8 g/min were covered. The size of the particles was determined to be in the rangeof 10–50 nm by aerosol instrumentation. The particles were spherical and slightly agglomerated. It was concluded that the particle size can be controlled via the total precursor mass flow rate, and the composition can be controlled by the molar ratio of Ag and Pd compounds in the precursor liquid.

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