scholarly journals Cobalt–Nickel Nanoparticles Supported on Reducible Oxides as Fischer–Tropsch Catalysts

ACS Catalysis ◽  
2020 ◽  
Vol 10 (13) ◽  
pp. 7343-7354 ◽  
Author(s):  
Carlos Hernández Mejía ◽  
Jessi E. S. van der Hoeven ◽  
Petra E. de Jongh ◽  
Krijn P. de Jong
Keyword(s):  
Nickel Nanoparticles ◽  
Fischer Tropsch ◽  
Cobalt Nickel ◽  
Reducible Oxides

scholarly journals Dual‐Function Cobalt–Nickel Nanoparticles Tailored for High‐Temperature Induction‐Heated Steam Methane Reforming

2018 ◽  
Vol 130 (33) ◽  
pp. 10729-10733 ◽  
Author(s):  
Morten G. Vinum ◽  
Mads R. Almind ◽  
Jakob S. Engbæk ◽  
Søren B. Vendelbo ◽  
Mikkel F. Hansen ◽  
...  
Keyword(s):  
High Temperature ◽  
Nickel Nanoparticles ◽  
Dual Function ◽  
Methane Reforming ◽  
Steam Methane Reforming ◽  
Steam Methane ◽  
Cobalt Nickel ◽  
Temperature Induction

Cobalt-nickel bimetallic Fischer-Tropsch catalysts: A combined theoretical and experimental approach

2020 ◽  
Vol 342 ◽  
pp. 88-98 ◽  
Author(s):  
Pieter van Helden ◽  
Frans Prinsloo ◽  
Jan-Albert van den Berg ◽  
Bongani Xaba ◽  
Willem Erasmus ◽  
...  
Keyword(s):  
Experimental Approach ◽  
Fischer Tropsch ◽  
Cobalt Nickel

scholarly journals Dual‐Function Cobalt–Nickel Nanoparticles Tailored for High‐Temperature Induction‐Heated Steam Methane Reforming

2018 ◽  
Vol 57 (33) ◽  
pp. 10569-10573 ◽  
Author(s):  
Morten G. Vinum ◽  
Mads R. Almind ◽  
Jakob S. Engbæk ◽  
Søren B. Vendelbo ◽  
Mikkel F. Hansen ◽  
...  
Keyword(s):  
High Temperature ◽  
Nickel Nanoparticles ◽  
Dual Function ◽  
Methane Reforming ◽  
Steam Methane Reforming ◽  
Steam Methane ◽  
Cobalt Nickel ◽  
Temperature Induction

scholarly journals Combined Synthesis and Hydroprocessing of Hydrocarbons over Co/SiO2 + ZSM-5 + Al2O3 Catalysts Promoted by Nickel

2021 ◽  
Vol 61 (4) ◽  
pp. 516-526
Author(s):  
R. E. Yakovenko ◽  
I. N. Zubkov ◽  
V. G. Bakun ◽  
A. P. Savost’yanov
Keyword(s):  
Ion Exchange ◽  
Cobalt Catalyst ◽  
Tropsch Synthesis ◽  
Metal Component ◽  
Fischer Tropsch ◽  
Fischer Tropsch Synthesis ◽  
Hydrogenation Activity ◽  
Cobalt Nickel ◽  
Catalytic Performances

Abstract The study investigates the effects of nickel introduction methods on the properties of a hybrid cobalt catalyst in a combination of Fischer–Tropsch synthesis and the hydroprocessing of the synthesized products. At 240°C, 2 MPa, and syngas WHSV 1000 h–1, the catalytic performances were compared, the products were analyzed for the hydrocarbon and fractional compositions, and the characteristics of the synthesized fuels were determined. Among the catalysts differing in nickel introduction method, the sample with a nickel-containing zeolite component prepared by ion exchange was found to have the highest hydrogenation activity, while the sample with a metal component generated by joint cobalt/nickel introduction [Co/SiO2 + Ni(i)/HZSM-5 + Al2O3] exhibited the highest isomerization activity.

scholarly journals Synthesis of Cobalt-Nickel Nanoparticles via a Liquid-Phase Reduction Process

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
T. Usami ◽  
S. A. Salman ◽  
K. Kuroda ◽  
M. K. Gouda ◽  
A. Mahdy ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Nickel Nanoparticles ◽  
Raw Materials ◽  
Reduction Process ◽  
Electronic Configuration ◽  
Reduction Reaction ◽  
Cobalt Sulfate ◽  
Mixing Ratios ◽  
Phase Reduction ◽  
Cobalt Nickel

Cobalt-nickel nanoparticles (Co-Ni-NPs) show promising electrochemical performance in oxygen and hydrogen evolution reactions (OER and HER) due to their physicochemical properties such as electronic configuration and great electrochemical stability. Therefore, developing new economically and environmentally friendly methods of synthesizing Co-Ni-NPs has become a practical requirement. Co-Ni-NPs were produced by employing the liquid-phase reduction method. Nickel and cobalt sulfate solutions in hydrazine monohydrate with various mixing ratios were used as raw materials. Nickel plays an important role in the nucleation process via increasing the reduction reaction rate throughout the formation of Co-Ni-NPs. Furthermore, the acceleration of the Co-Ni-NPs formation process may be attributed to the partial dissolution of Ni(OH)2 in the presence of N2H4 and/or citrate-anions and the formation of the Ni-N2H4 or Ni-Cit complexes in contrast to Co(OH)2.

Preparation and characterisation of vanadium pentoxide supported rhodium catalyst

1988 ◽  
Vol 46 ◽  
pp. 946-947
Author(s):  
A. Legrouri
Keyword(s):  
Aqueous Solution ◽  
Thermal Decomposition ◽  
Physicochemical Properties ◽  
Surface Area ◽  
Vanadium Pentoxide ◽  
High Purity ◽  
Gas Adsorption ◽  
Rhodium Catalyst ◽  
Optical Methods ◽  
Reducible Oxides

The industrial importance of metal catalysts supported on reducible oxides has stimulated considerable interest during the last few years. This presentation reports on the study of the physicochemical properties of metallic rhodium supported on vanadium pentoxide (Rh/V2O5). Electron optical methods, in conjunction with other techniques, were used to characterise the catalyst before its use in the hydrogenolysis of butane; a reaction for which Rh metal is known to be among the most active catalysts.V2O5 powder was prepared by thermal decomposition of high purity ammonium metavanadate in air at 400 °C for 2 hours. Previous studies of the microstructure of this compound, by HREM, SEM and gas adsorption, showed it to be non— porous with a very low surface area of 6m2/g3. The metal loading of the catalyst used was lwt%Rh on V2Q5. It was prepared by wet impregnating the support with an aqueous solution of RhCI3.3H2O.

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