Facet Effect of Ceria Nanoparticles on Platinum Dispersion and Catalytic Activity of Methanol Partial Oxidation

2021 ◽  
Author(s):  
Kasala Prabhakar Reddy ◽  
Han Seul Choi ◽  
Daeho Kim ◽  
Minkee Choi ◽  
Ryong Ryoo ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Partial Oxidation ◽  
Methyl Formate ◽  
Ceria Nanoparticles ◽  
Product Selectivity ◽  
Turnover Frequency ◽  
Methanol Partial Oxidation ◽  
Ceria Catalysts ◽  
Platinum Dispersion

The effect of platinum–supported nano–shaped ceria catalysts on methanol partial oxidation and methyl formate product selectivity has been investigated. Pt supported on a CeO2 nanocube catalyst had higher turnover frequency...

Catalytic activity of electrospun Ag and Ag/carbon composite fibres in partial methanol oxidation

2015 ◽  
Vol 5 (2) ◽  
pp. 1153-1162 ◽  
Author(s):  
V. Halperin ◽  
G. E. Shter ◽  
V. Gelman ◽  
D. M. Peselev ◽  
M. Mann-Lahav ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Methanol Oxidation ◽  
Partial Oxidation ◽  
Oxidation Process ◽  
Carbon Composite ◽  
Carbon Fibres ◽  
Methanol Partial Oxidation ◽  
Highly Active

A feasibility of electrospinning in producing of highly active Ag and Ag/carbon fibres based catalysts is demonstrated in methanol partial oxidation process (PMO).

High Catalytic Activity of Pd1/ZnO(101̅0) toward Methanol Partial Oxidation: A DFT+KMC Study

ACS Catalysis ◽  
2018 ◽  
Vol 8 (6) ◽  
pp. 5553-5569 ◽  
Author(s):  
Takat B. Rawal ◽  
Shree Ram Acharya ◽  
Sampyo Hong ◽  
Duy Le ◽  
Yu Tang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Partial Oxidation ◽  
High Catalytic Activity ◽  
Methanol Partial Oxidation

The catalytic activity of Pt6M (M=Pt, Ru, Sn) cluster for methanol partial oxidation

2015 ◽  
Vol 1061 ◽  
pp. 52-59 ◽  
Author(s):  
Haixia Xu ◽  
Min Zhang ◽  
Yanyang Chen ◽  
Huiling Liu ◽  
Kejin Xu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Partial Oxidation ◽  
Methanol Partial Oxidation

scholarly journals Oscillatory Behaviour of Ni Supported on ZrO2 in the Catalytic Partial Oxidation of Methane as Determined by Activation Procedure

Materials ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2495
Author(s):  
Daniela Pietrogiacomi ◽  
Maria Cristina Campa ◽  
Ida Pettiti ◽  
Simonetta Tuti ◽  
Giulia Luccisano ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Partial Oxidation ◽  
Active Sites ◽  
Direct Reduction ◽  
Partial Oxidation Of Methane ◽  
Catalytic Partial Oxidation ◽  
Oxidation Of Methane ◽  
Short Contact Time ◽  
Oxidation Reduction ◽  
Ni Species

Ni/ZrO2 catalysts, active and selective for the catalytic partial oxidation of methane to syngas (CH4-CPO), were prepared by the dry impregnation of zirconium oxyhydroxide (Zhy) or monoclinic ZrO2 (Zm), calcination at 1173 K and activation by different procedures: oxidation-reduction (ox-red) or direct reduction (red). The characterization included XRD, FESEM, in situ FTIR and Raman spectroscopies, TPR, and specific surface area measurements. Catalytic activity experiments were carried out in a flow apparatus with a mixture of CH4:O2 = 2:1 in a short contact time. Compared to Zm, Zhy favoured the formation of smaller NiO particles, implying a higher number of Ni sites strongly interacting with the support. In all the activated Ni/ZrO2 catalysts, the Ni–ZrO2 interaction was strong enough to limit Ni aggregation during the catalytic runs. The catalytic activity depended on the activation procedures; the ox-red treatment yielded very active and stable catalysts, whereas the red treatment yielded catalysts with oscillating activity, ascribed to the formation of Niδ+ carbide-like species. The results suggested that Ni dispersion was not the main factor affecting the activity, and that active sites for CH4-CPO could be Ni species at the boundary of the metal particles in a specific configuration and nuclearity.

scholarly journals Formaldehyde Selectivity in Methanol Partial Oxidation on Silver: Effect of Reactive Oxygen Species, Surface Reconstruction, and Stability of Intermediates

ACS Catalysis ◽  
2021 ◽  
pp. 6200-6209
Author(s):  
Mustafa Karatok ◽  
Mehmet Gokhan Sensoy ◽  
Evgeny I. Vovk ◽  
Hande Ustunel ◽  
Daniele Toffoli ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Surface Reconstruction ◽  
Partial Oxidation ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Methanol Partial Oxidation

Methanol partial oxidation on carbon-supported Pt and Pd catalysts

2007 ◽  
Vol 123 (1-4) ◽  
pp. 158-163 ◽  
Author(s):  
R. Ubago-Pérez ◽  
F. Carrasco-Marín ◽  
C. Moreno-Castilla
Keyword(s):  
Partial Oxidation ◽  
Pd Catalysts ◽  
Methanol Partial Oxidation

Synthesis of methyl formate via two-step methane partial oxidation

1998 ◽  
Vol 46 (2-3) ◽  
pp. 117-125 ◽  
Author(s):  
A. Parmaliana ◽  
F. Frusteri ◽  
F. Arena ◽  
A. Mezzapica ◽  
V. Sokolovskii
Keyword(s):  
Partial Oxidation ◽  
Methyl Formate ◽  
Methane Partial Oxidation

Monodispersed palladium–cobalt alloy nanoparticles assembled on poly(N-vinyl-pyrrolidone) (PVP) as a highly effective catalyst for dimethylamine borane (DMAB) dehydrocoupling

RSC Advances ◽  
2016 ◽  
Vol 6 (29) ◽  
pp. 24097-24102 ◽  
Author(s):  
Betül Çelik ◽  
Yunus Yıldız ◽  
Hakan Sert ◽  
Esma Erken ◽  
Yagmur Koşkun ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Catalytic Performance ◽  
Vinyl Pyrrolidone ◽  
Alloy Nanoparticles ◽  
Turnover Frequency ◽  
Cobalt Alloy ◽  
High Turnover ◽  
Effective Catalyst ◽  
Dimethylamine Borane ◽  
Very High

Monodispersed PdCo@PVP NPs showed record catalytic activity, giving the best catalytic performance yet with a very high turnover frequency.

Methanol partial oxidation accompanied by heat recirculation in a Swiss-roll reactor

2018 ◽  
Vol 232 ◽  
pp. 79-88 ◽  
Author(s):  
Wei-Hsin Chen ◽  
Yu-Zhi Guo ◽  
Chih-Chun Chen
Keyword(s):  
Partial Oxidation ◽  
Methanol Partial Oxidation ◽  
Heat Recirculation

scholarly journals Preparation of Palladium-Impregnated Ceria by Metal Complex Decomposition for Methane Steam Reforming Catalysis

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Worawat Wattanathana ◽  
Suttipong Wannapaiboon ◽  
Chatchai Veranitisagul ◽  
Navadol Laosiripojana ◽  
Nattamon Koonsaeng ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Metal Complex ◽  
Steam Reforming ◽  
Organic Ligand ◽  
Methane Steam Reforming ◽  
Microwave Assisted ◽  
Methane Steam ◽  
Bet Specific Surface Area ◽  
Ceria Catalysts

Palladium-impregnated ceria materials were successfully prepared via an integrated procedure between a metal complex decomposition method and a microwave-assisted wetness impregnation. Firstly, ceria (CeO2) powders were synthesized by thermal decomposition of cerium(III) complexes prepared by using cerium(III) nitrate or cerium(III) chloride as a metal source to form a metal complex precursor with triethanolamine or benzoxazine dimer as an organic ligand. Palladium(II) nitrate was consequently introduced to the preformed ceria materials using wetness impregnation while applying microwave irradiation to assist dispersion of the dopant. The palladium-impregnated ceria materials were obtained by calcination under reduced atmosphere of 10% H2 in He stream at 700°C for 2 h. Characterization of the palladium-impregnated ceria materials reveals the influences of the metal complex precursors on the properties of the obtained materials. Interestingly, the palladium-impregnated ceria prepared from the cerium(III)-benzoxazine dimer complex revealed significantly higher BET specific surface area and higher content of the more active Pdδ+ (δ > 2) species than the materials prepared from cerium(III)-triethanolamine complexes. Consequently, it exhibited the most efficient catalytic activity in the methane steam reforming reaction. By optimization of the metal complex precursors, characteristics of the obtained palladium-impregnated ceria catalysts can be modified and hence influence the catalytic activity.

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