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

Hierarchical carbon coated molybdenum dioxide nanotubes as a highly active and durable electrocatalytic support for methanol oxidation

2017 ◽  
Vol 5 (8) ◽  
pp. 4067-4074 ◽  
Author(s):  
Jing-Jia Zhang ◽  
Xu-Lei Sui ◽  
Guo-Sheng Huang ◽  
Da-Ming Gu ◽  
Zhen-Bo Wang
Keyword(s):  
Corrosion Resistance ◽  
Catalytic Activity ◽  
Surface Area ◽  
Methanol Oxidation ◽  
Molybdenum Dioxide ◽  
Good Corrosion Resistance ◽  
Highly Active ◽  
Carbon Coated ◽  
Good Catalytic Activity ◽  
Hierarchical Carbon

Hierarchical nanotubes of Pt/MoO2@C catalyst demonstrated good catalytic activity and ultrahigh stability towards methanol electrooxidation due to the large surface area and good corrosion resistance.

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...

Effects of Microwave-synthesizing Parameters on Structure and Electro-catalytic Activity of Pt2Mo/C towards Methanol Oxidation

2010 ◽  
Vol 25 (4) ◽  
pp. 359-364 ◽  
Author(s):  
Xin ZENG ◽  
Xian-Xia YUAN ◽  
Xiao-Yun XIA ◽  
Juan DU ◽  
Hui-Juan ZHANG ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Methanol Oxidation ◽  
Electro Catalytic Activity

Deactivation of arenetitanium(II) bromoalane complexes in the cyclotrimerization of butadiene

1986 ◽  
Vol 51 (12) ◽  
pp. 2751-2759 ◽  
Author(s):  
Jindřich Poláček ◽  
Helena Antropiusová ◽  
Lidmila Petrusová ◽  
Karel Mach
Keyword(s):  
Catalytic Activity ◽  
Catalytic System ◽  
Model System ◽  
Highly Active ◽  
Catalytic Stability

The C6H6.Ti(II)(AlBr4)2 (Ib) catalyst deactivates during the butadiene cyclotrimerization to give a solid containing all titanium (mostly as TiBr3) and a mixture of AlBr3 and RAlBr2 compounds dissolved in benzene. The residual cationic catalytic activity of the deactivated Ib system is due to presence of AlBr3. In contrast to TiCl3, the deactivated Ib system and the model system TiBr3 + AlBr3 are not activated by the addition of EtAlCl2 in the presence of butadiene: the highly active benzenetitanium(II) system is re-constituted only after reduction of TiBr3 with Et3Al followed by the addition of EtAlCl2. The addition of Et2AlBr to Ib accelerates the deactivation of the system. Deactivation products of this system contain mainly Ti(II) species which forms benzenetitanium(II) catalytic system after addition of EtAlCl2. All the EtAlCl2 reactivated systems produce (Z, E, E)-1,5,9-cyclododecatriene with high catalytic stability and considerable selectivity (>90%). This behaviour points to the catalysis by benzenetitanium(II) chloroalane complexes containing only low amount of bromine atoms and ethyl groups.

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 Highly Dispersed Pd Species Supported on CeO2 Catalyst for Lean Methane Combustion: The Effect of the Occurrence State of Surface Pd Species on the Catalytic Activity

Catalysts ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 772
Author(s):  
Yanxiong Liu ◽  
Changhua Hu ◽  
Longchun Bian
Keyword(s):  
Catalytic Activity ◽  
Oxygen Vacancies ◽  
Methane Combustion ◽  
Pd Nanoparticles ◽  
High Concentration ◽  
Ch4 Combustion ◽  
Highly Active ◽  
Δ Phase ◽  
Occurrence State ◽  
Comprehensive Characterization

The correlation between the occurrence state of surface Pd species of Pd/CeO2 for lean CH4 combustion is investigated. Herein, by using a reduction-deposition method, we have synthesized a highly active 0.5% PdO/CeO2-RE catalyst, in which the Pd nanoparticles are evenly dispersed on the CeO2 nanorods CeO2-R. Based on comprehensive characterization, we have revealed that the uniformly dispersed Pd nanoparticles with a particle size distribution of 2.3 ± 0.6 nm are responsible for the generation of PdO and PdxCe1−xO2−δ phase with –Pd2+–O2−–Ce4+– linkage, which can easily provide oxygen vacancies and facilitate the transfer of reactive oxygen species between the CeO2-R and Pd species. As a consequence, the remarkable catalytic activity of 0.5% Pd/CeO2-RE is related to the high concentration of PdO species on the surface of the catalyst and the synergistic interaction between the Pd species and the CeO2 nanorod.

Sign in / Sign up

Export Citation Format

Share Document