Design of 3D Hollow Porous Heterogeneous Nickel–Cobalt Phosphides for Synergistically Enhancing Catalytic Performance for Electrooxidation of Methanol

2020 ◽  
Vol 12 (31) ◽  
pp. 34971-34979
Author(s):  
Shuai Chen ◽  
Xiaobo Yang ◽  
Xili Tong ◽  
Fengwei Zhang ◽  
Houbing Zou ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
Nickel Cobalt ◽  
Electrooxidation Of Methanol

scholarly journals Simultaneous Catalytic Oxidation of a Lean Mixture of CO-CH4 over Spinel Type Cobalt Based Oxides

2020 ◽  
Vol 15 (2) ◽  
pp. 490-500
Author(s):  
Neha Neha ◽  
Ram Prasad ◽  
Satya Vir Singh
Keyword(s):  
Mixed Oxides ◽  
Structural Disorder ◽  
Catalytic Performance ◽  
Molar Ratio ◽  
Total Oxidation ◽  
Spinel Type ◽  
Molar Ratios ◽  
Long Term Stability ◽  
Nickel Cobalt ◽  
Temperature Programmed

A series of nickel-cobalt bimetal oxides in varying molar ratios and its single metal oxides were synthesized by reactive calcination of coprecipitated basic-carbonates. Several characterization techniques, such as: Bruneuer Emmett Teller (BET), X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Fourier Transform Infra Red (FTIR), and Hydrogen Temperature Programmed Reduction (H2-TPR), were performed over the oxides. Activities of oxides were evaluated in methane total oxidation in the presence or the absence of CO. The best catalytic performance was observed over NiCo catalyst with a Ni/Co molar ratio of 1:1, and the complete conversion of CO-CH4 mixture was achieved at 390 °C. Moreover, the presence of carbon monoxide improves CH4 total oxidation over nickel-cobalt mixed oxides. Structural analysis reveals that the insertion of nickel into the spinel lattice of cobalt oxide causes the structural disorder, which probably caused the increase of the amount of octahedrally coordinated divalent nickel cations that are responsible for catalytic activity. Stability of the best-performed catalyst has been tested in the two conditions, showing remarkable long-term stability and thermal stability, however, showed deactivation after thermally ageing at 700 °C. Copyright © 2020 BCREC Group. All rights reserved 

Nickel cobalt oxide/carbon nanotubes hybrid as a high-performance electrocatalyst for metal/air battery

Nanoscale ◽  
2014 ◽  
Vol 6 (17) ◽  
pp. 10235-10242 ◽  
Author(s):  
Hui Zhang ◽  
Hang Qiao ◽  
Haiyan Wang ◽  
Nan Zhou ◽  
Jiajie Chen ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Synergistic Effect ◽  
Cobalt Oxide ◽  
High Performance ◽  
Catalytic Performance ◽  
Nickel Cobalt ◽  
Nickel Cobalt Oxide ◽  
Air Battery

The NiCo2O4/CNTs hybrid was firstly proposed as a high-performance catalyst for ORR process. Because of the synergistic effect, the hybrid exhibited significant improvement of catalytic performance in comparison with the NiCo2O4 or CNTs alone, even outperforming Pt/C.

scholarly journals Synergy between Ni and Co Nanoparticles Supported on Carbon in Guaiacol Conversion

Nanomaterials ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 2199
Author(s):  
Elodie Blanco ◽  
Ana Belen Dongil ◽  
Néstor Escalona
Keyword(s):  
Liquid Phase ◽  
Bimetallic Catalysts ◽  
High Surface ◽  
High Surface Area ◽  
Catalytic Performance ◽  
Impregnation Method ◽  
N2 Adsorption ◽  
Nickel Cobalt ◽  
Co Nanoparticles ◽  
Adsorption Desorption

Nickel-cobalt bimetallic catalysts supported on high surface area graphite with different Ni:Co ratios (3:1, 2:1 and 1:1) and the monometallic Ni and Co were prepared by wetness impregnation method. The catalysts were tested in hydrodeoxygenation (HDO) of guaiacol in the liquid phase at 50 bar of H2 and 300 °C. The materials were characterized by N2 adsorption–desorption, XRD, TEM/STEM, H2-TPR, and CO-chemisorption to assess their properties and correlate them with the catalytic results. The activity was higher on the bimetallic catalysts and followed the trend NiCo2:1/G ∼ NiCo3:1/G > NiCo1:1/G > Co/G > Ni/G. Also, selectivity results showed that Ni was more active in the hydrogenation favoring cyclohexanol production from phenol, while this was inhibited on the Co-containing catalysts. Hence, the results showed that synergy was created between Ni and Co and that their interaction, properties, and catalytic performance depend on the metals’ ratio.

Enhanced Catalytic Performance of Bimetallic Nickel–Cobalt Loaded Low-Content Au Catalyst Toward Ethanol Electro-Oxidation

2016 ◽  
Vol 7 (3) ◽  
pp. 193-200 ◽  
Author(s):  
Cheng Yu ◽  
Zhaoxiong Yan ◽  
Lihong Zhu ◽  
Juan Wen ◽  
Hongqiang Wang ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
Au Catalyst ◽  
Nickel Cobalt ◽  
Electro Oxidation

Nickel–cobalt oxides supported on Co/N decorated graphene as an excellent bifunctional oxygen catalyst

2017 ◽  
Vol 5 (11) ◽  
pp. 5594-5600 ◽  
Author(s):  
Yongchao Hao ◽  
Yuqi Xu ◽  
Junfeng Liu ◽  
Xiaoming Sun
Keyword(s):  
Catalytic Performance ◽  
Cobalt Oxides ◽  
Graphene Composite ◽  
Nickel Cobalt ◽  
Nickel Cobalt Oxides

A nickel–cobalt oxides supported on Co/N decorated graphene composite was prepared with excellent bifunctional oxygen catalytic performance.

ChemInform Abstract: Enhanced Catalytic Performance of Bimetallic Nickel-Cobalt Loaded Low-Content Au Catalyst Toward Ethanol Electro-Oxidation

ChemInform ◽  
2016 ◽  
Vol 47 (39) ◽  
Author(s):  
Cheng Yu ◽  
Zhaoxiong Yan ◽  
Lihong Zhu ◽  
Juan Wen ◽  
Hongqiang Wang ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
Au Catalyst ◽  
Nickel Cobalt ◽  
Electro Oxidation

The design and catalytic performance of molybdenum active sites on an MCM-41 framework for the aerobic oxidation of 5-hydroxymethylfurfural to 2,5-diformylfuran

2019 ◽  
Vol 9 (3) ◽  
pp. 811-821 ◽  
Author(s):  
Zhao-Meng Wang ◽  
Li-Juan Liu ◽  
Bo Xiang ◽  
Yue Wang ◽  
Ya-Jing Lyu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Active Sites ◽  
Aerobic Oxidation ◽  
Catalytic Performance ◽  
Mcm 41

The catalytic activity decreases as –(SiO)3Mo(OH)(O) > –(SiO)2Mo(O)2 > –(O)4–MoO.

Optimizing electron density of nickel sulfide electrocatalysts through sulfur vacancy engineering for alkaline hydrogen evolution

2020 ◽  
Vol 8 (35) ◽  
pp. 18207-18214
Author(s):  
Dongbo Jia ◽  
Lili Han ◽  
Ying Li ◽  
Wenjun He ◽  
Caichi Liu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Electron Density ◽  
Rational Design ◽  
Nickel Sulfide ◽  
Catalytic Performance ◽  
Sulfide Catalysts ◽  
Sulfur Vacancy

A novel, rational design for porous S-vacancy nickel sulfide catalysts with remarkable catalytic performance for alkaline HER.

MAGNETIC PROPERTIES OF NICKEL-COPPER AND NICKEL-COBALT ALLOYS

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-1937-C8-1938 ◽  
Author(s):  
D. C. Jiles ◽  
T. T. Chang ◽  
D. R. Hougen ◽  
R. Ranjan
Keyword(s):  
Magnetic Properties ◽  
Cobalt Alloys ◽  
Nickel Cobalt ◽  
Nickel Copper
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