Properties of highly dispersed supported catalysts in hydrogenation reactions

1984 ◽  
Vol 25 (3-4) ◽  
pp. 201-205
Author(s):  
N. A. Zakarina ◽  
G. D. Zakumbaeva ◽  
V. P. Kuidina
Keyword(s):  
Supported Catalysts ◽  
Highly Dispersed ◽  
Hydrogenation Reactions

Recyclable diguanidinium-BINAP and PEG-BINAP supported catalysts: syntheses and use in Rh(I) and Ru(II) asymmetric hydrogenation reactions

2001 ◽  
Vol 42 (20) ◽  
pp. 3423-3426 ◽  
Author(s):  
Patricio Guerreiro ◽  
Virginie Ratovelomanana-Vidal ◽  
Jean-Pierre Genêt ◽  
Philippe Dellis
Keyword(s):  
Supported Catalysts ◽  
Asymmetric Hydrogenation ◽  
Hydrogenation Reactions

XRD characterization of highly dispersed metal catalysts on carbon support

1993 ◽  
Vol 8 (8) ◽  
pp. 1829-1835 ◽  
Author(s):  
Paolo Scardi ◽  
Pier Luigi Antonucci
Keyword(s):  
Particle Size ◽  
Supported Catalysts ◽  
Profile Analysis ◽  
Rietveld Method ◽  
Carbon Support ◽  
Lattice Parameter ◽  
Microstructural Parameters ◽  
Transmission Electron ◽  
Supported Pt Catalysts ◽  
Highly Dispersed

Carbon-supported Pt catalysts were prepared from H2PtCl6 or K2PtCl6 aqueous solutions. Particle size and structure after several thermal activation treatments were studied by X-Ray Diffraction (XRD), Transmission Electron Microscopy (TEM), and Cyclic Voltammetry (CV), and the results of the three techniques were compared. As the catalysts were highly dispersed on an amorphous support, a conventional XRD profile analysis for crystallite size determination could not be performed properly, because of the strong overlapping between the broad Pt peaks superposed to the halos of the amorphous phase. Thus, a new procedure of whole XRD pattern fitting, based on the Rietveld method, was used to have reliable data of Pt particle size (surface area) and lattice parameter. All structural and microstructural parameters were refined within the same procedure, also considering the transparency of the carbon supported catalysts and minimizing the effect of the amorphous background. The method can also take into account the presence of bimodal particle size distributions, which is difficult to study by CV or TEM.

Looking for the active hydrogen species in a 5 wt% Pt/C catalyst: a challenge for inelastic neutron scattering

2018 ◽  
Vol 208 ◽  
pp. 227-242 ◽  
Author(s):  
M. Carosso ◽  
A. Lazzarini ◽  
A. Piovano ◽  
R. Pellegrini ◽  
S. Morandi ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Inelastic Neutron Scattering ◽  
Inelastic Neutron ◽  
Active Hydrogen ◽  
Industrial Catalyst ◽  
Mean Diameter ◽  
Highly Dispersed ◽  
Hydrogenation Reactions

We looked at the active hydrogen species in a highly dispersed and very homogeneous 5 wt% Pt/C industrial catalyst (Pt particle mean diameter of 2.0 ± 0.5 nm) for hydrogenation reactions, by coupling H2 adsorption measurements with Inelastic Neutron Scattering (INS).

scholarly journals Engineering active sites on reduced graphene oxide by hydrogen plasma irradiation: mimicking bifunctional metal/supported catalysts in hydrogenation reactions

2018 ◽  
Vol 20 (11) ◽  
pp. 2611-2623 ◽  
Author(s):  
Ana Primo ◽  
Antonio Franconetti ◽  
Monica Magureanu ◽  
Nicolae Bogdan Mandache ◽  
Cristina Bucur ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Active Sites ◽  
Supported Catalysts ◽  
Hydrogen Plasma ◽  
Hydrogenation Catalyst ◽  
Plasma Irradiation ◽  
Reduced Graphene ◽  
Hydrogenation Reactions

H2 plasma generates carbon vacancies on reduced graphene oxide increasing its activity as a hydrogenation catalyst.

Highly dispersed platinum supported catalysts – Effect of properties on the electrocatalytic activity

2019 ◽  
Vol 259 ◽  
pp. 118050 ◽  
Author(s):  
Eirini Zagoraiou ◽  
Maria K. Daletou ◽  
Labrini Sygellou ◽  
Stella Ballomenou ◽  
Stylianos G. Neophytides
Keyword(s):  
Electrocatalytic Activity ◽  
Supported Catalysts ◽  
Highly Dispersed

Insight into reaction pathways in CO hydrogenation reactions over K/MoS2 supported catalysts via alcohol/olefin co-feed experiments

2016 ◽  
Vol 6 (6) ◽  
pp. 1957-1966 ◽  
Author(s):  
Micaela Taborga Claure ◽  
Michael R. Morrill ◽  
Jin Wai Goh ◽  
Song-Hai Chai ◽  
Sheng Dai ◽  
...  
Keyword(s):  
Mesoporous Carbon ◽  
Co Hydrogenation ◽  
Supported Catalysts ◽  
Reaction Pathways ◽  
Higher Alcohol Synthesis ◽  
Higher Alcohol ◽  
Alcohol Synthesis ◽  
Hydrogenation Reactions ◽  
Insight Into

Reaction pathways for higher alcohol synthesis from syngas are studied over K/MoS2 domains supported on mesoporous carbon (C) and mixed MgAl oxide (MMO) via addition of methanol, ethanol, and ethylene co-feeds.

Highly dispersed ultra-small Pd nanoparticles on gadolinium hydroxide nanorods for efficient hydrogenation reactions

Nanoscale ◽  
2017 ◽  
Vol 9 (36) ◽  
pp. 13800-13807 ◽  
Author(s):  
Naseeb Ullah ◽  
M. Imran ◽  
Kuang Liang ◽  
Cheng-Zong Yuan ◽  
Akif Zeb ◽  
...  
Keyword(s):  
Pd Nanoparticles ◽  
Highly Dispersed ◽  
Hydrogenation Reactions

Highly dispersed ultra-small Pd nanoparticles on gadolinium hydroxide nanorods catalysts have been developed for excellent hydrogenation activities.

Highly dispersed platinum on carbon aerogels as supported catalysts for PEM fuel cell-electrodes: comparison of two different synthesis paths

2004 ◽  
Vol 350 ◽  
pp. 88-96 ◽  
Author(s):  
Julien Marie ◽  
Sandrine Berthon-Fabry ◽  
Patrick Achard ◽  
Marian Chatenet ◽  
Aurélie Pradourat ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Supported Catalysts ◽  
Pem Fuel Cell ◽  
Carbon Aerogels ◽  
Fuel Cell Electrodes ◽  
Highly Dispersed
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