Role of the Metal-Oxide Support in the Catalytic Activity of Pd Nanoparticles for Ethanol Electrooxidation in Alkaline Media

2015 ◽  
Vol 3 (2) ◽  
pp. 218-227 ◽  
Author(s):  
Evans Angwenyi Monyoncho ◽  
Spyridon Ntais ◽  
Nicolas Brazeau ◽  
Jhing-Jhou Wu ◽  
Chia-Liang Sun ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Metal Oxide ◽  
Pd Nanoparticles ◽  
Alkaline Media ◽  
Ethanol Electrooxidation ◽  
Oxide Support ◽  
Metal Oxide Support

scholarly journals Inside Cover: Role of the Metal-Oxide Support in the Catalytic Activity of Pd Nanoparticles for Ethanol Electrooxidation in Alkaline Media (ChemElectroChem 2/2016)

2016 ◽  
Vol 3 (2) ◽  
pp. 175-175
Author(s):  
Evans Angwenyi Monyoncho ◽  
Spyridon Ntais ◽  
Nicolas Brazeau ◽  
Jhing-Jhou Wu ◽  
Chia-Liang Sun ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Metal Oxide ◽  
Pd Nanoparticles ◽  
Alkaline Media ◽  
Ethanol Electrooxidation ◽  
Oxide Support ◽  
Metal Oxide Support

scholarly journals Effect of Metal Oxide–Support Interactions on Ethylene Oligomerization over Nickel Oxide/Silica–Alumina Catalysts

Catalysts ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 933
Author(s):  
Ji Sun Yoon ◽  
Min Bum Park ◽  
Youngmin Kim ◽  
Dong Won Hwang ◽  
Ho-Jeong Chae
Keyword(s):  
Catalytic Activity ◽  
Metal Oxide ◽  
Nickel Oxide ◽  
Ethylene Oligomerization ◽  
Nickel Aluminate ◽  
X Ray ◽  
Oxide Support ◽  
Metal Oxide Support ◽  
Silica Alumina ◽  
Temperature Programmed

We investigated the interactions between nickel oxide and silica–alumina supports, which were applied to the catalytic oligomerization of ethylene by powder X-ray diffraction, UV diffuse reflectance spectroscopy, H2 temperature-programmed reduction, and X-ray photoelectron spectroscopy. The catalytic activity was also correlated with the acidity of catalysts determined by NH3 temperature-programmed desorption and pyridine FT-IR spectroscopy. Although all the catalysts had similar Ni contents, their catalytic performances were strongly influenced by the strength of the metal oxide–support interaction. Strong interaction promoted the formation of nickel aluminate on the catalyst surface, and resulted in low catalytic activity due to reducing the amount of nickel oxide active sites. However, weak interaction favored the aggregation of nickel oxide species into larger particles, and thus resulted in low ethylene conversion and selectivity to oligomers. Eventually, the optimal activity was realized at the medium interaction strength, preserving a high amount of both active nickel oxides and acid sites.

Supported FexNiy catalysts for the co-activation of CO2 and small alkanes

2020 ◽  
Author(s):  
Shaine Raseale ◽  
Wijnand Marquart ◽  
Kai Jeske ◽  
Gonzalo Prieto ◽  
Michael Claeys ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Metal Oxide ◽  
Lewis Acidity ◽  
Oxide Support ◽  
Co Activation ◽  
Metal Oxide Support

The effect of both the Fe:Ni ratio (5 to 1:1) and the relative Lewis acidity of a metal oxide support on catalytic activity, selectivity and stability was investigated in the...

Nanosized iron and nickel oxide zirconia supported catalysts for benzylation of benzene: Role of metal oxide support interaction

2014 ◽  
Vol 486 ◽  
pp. 19-31 ◽  
Author(s):  
Tarek T. Ali ◽  
Katabathini Narasimharao ◽  
Nesreen S. Ahmed ◽  
Sulaiman Basahel ◽  
Shaeel Al-Thabaiti ◽  
...  
Keyword(s):  
Metal Oxide ◽  
Nickel Oxide ◽  
Supported Catalysts ◽  
Support Interaction ◽  
Oxide Support ◽  
Metal Oxide Support ◽  
Nanosized Iron ◽  
Benzylation Of Benzene

Surface activation by electron scavenger metal nanorod adsorption on TiH2, TiC, TiN, and Ti2O3

2021 ◽  
Author(s):  
Yoyo Hinuma ◽  
Shinya Mine ◽  
Takashi Toyao ◽  
Zen Maeno ◽  
Ken-ichi Shimizu
Keyword(s):  
Metal Oxide ◽  
Local Environment ◽  
Support Surface ◽  
Surface Activation ◽  
Oxide Support ◽  
Electron Scavenger ◽  
Metal Oxide Support

Metal/oxide support perimeter sites are known to provide unique properties because the nearby metal changes the local environment on the support surface. In particular, the electron scavenger effect reduces the...

scholarly journals Strong metal oxide-support interactions in carbon/hematite nanohybrids activate novel energy storage modes for ionic liquid-based supercapacitors

2019 ◽  
Vol 20 ◽  
pp. 188-195 ◽  
Author(s):  
Feili Lai ◽  
Jianrui Feng ◽  
Tobias Heil ◽  
Gui-Chang Wang ◽  
Peter Adler ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Energy Storage ◽  
Metal Oxide ◽  
Oxide Support ◽  
Metal Oxide Support

scholarly journals The Role of Surface Hydroxylation, Lattice Vacancies and Bond Covalency in the Electrochemical Oxidation of Water (OER) on Ni-Depleted Iridium Oxide Catalysts

2020 ◽  
Vol 234 (5) ◽  
pp. 787-812 ◽  
Author(s):  
Hong Nhan Nong ◽  
Hoang Phi Tran ◽  
Camillo Spöri ◽  
Malte Klingenhof ◽  
Lorenz Frevel ◽  
...  
Keyword(s):  
Metal Oxide ◽  
High Surface ◽  
High Surface Area ◽  
Oxide Shell ◽  
Mixed Metal Oxide ◽  
Support Materials ◽  
Oxide Support ◽  
Rich Alloy ◽  
Surface Hydroxylation

AbstractThe usage of iridium as an oxygen-evolution-reaction (OER) electrocatalyst requires very high atom efficiencies paired with high activity and stability. Our efforts during the past 6 years in the Priority Program 1613 funded by the Deutsche Forschungsgemeinschaft (DFG) were focused to mitigate the molecular origin of kinetic overpotentials of Ir-based OER catalysts and to design new materials to achieve that Ir-based catalysts are more atom and energy efficient, as well as stable. Approaches involved are: (1) use of bimetallic mixed metal oxide materials where Ir is combined with cheaper transition metals as starting materials, (2) use of dealloying concepts of nanometer sized core-shell particle with a thin noble metal oxide shell combined with a hollow or cheap transition metal-rich alloy core, and (3) use of corrosion-resistant high-surface-area oxide support materials. In this mini review, we have highlighted selected advances in our understanding of Ir–Ni bimetallic oxide electrocatalysts for the OER in acidic environments.

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