Cover Picture: Study of Lanthanum Manganate and Yttrium-Stabilized Zirconia-Supported Palladium Dual-Bed Catalyst System for the Total Oxidation of Methane: A Study by 18 O2 /16 O2 Isotopic Exchange (ChemCatChem 11/2016)

ChemCatChem ◽  
2016 ◽  
Vol 8 (11) ◽  
pp. 1858-1858 ◽  
Author(s):  
Mélissandre Richard ◽  
Fabien Can ◽  
Sonia Gil ◽  
Anne Giroir-Fendler ◽  
Daniel Duprez ◽  
...  
Keyword(s):  
Isotopic Exchange ◽  
Catalyst System ◽  
Stabilized Zirconia ◽  
Total Oxidation ◽  
Oxidation Of Methane ◽  
Lanthanum Manganate ◽  
Supported Palladium ◽  
Dual Bed

Preparation of catalyst as Au doped Mn1Co9Ox/ceramic system for total oxidation of CO

2021 ◽  
Vol 10 (4) ◽  
pp. 39-45
Author(s):  
Phuong Pham Thi Mai ◽  
Hoan Nguyen Quoc ◽  
Quan Do Quoc ◽  
Hung Nguyen Thanh
Keyword(s):  
Sol Gel ◽  
Active Phase ◽  
Catalyst System ◽  
Oxidation Of Co ◽  
Sem Images ◽  
Total Oxidation ◽  
Wet Impregnation ◽  
Modern Analysis ◽  
Catalyst Powder ◽  
Xrd Patterns

In this paper, the Au doped Mn1Co9Ox was investigated for total oxidation of CO. The sol-gel method was applied to prepare this catalyst and some modern analysis methods as XRD, EPR, TPx, SEM were utilized to characterize its properties. The XRD patterns showed only Co3O4 phase without any peaks belonging to Mn or Au. However, the presence of Au and Mn was confirmed by EPR and O2-TPD results. With the aim to further apply catalyst in reality, the Au doped Mn1Co9Ox was deposited on ceramic by sol-gel, wet impregnation. The SEM images displayed the successful coating of active phase on substrate. However, the complete catalyst system didn’t have the high activity in total CO oxidation like the catalyst powder because of large agglomerations on coatings.

Etheric C–O Bond Hydrogenolysis Using a Tandem Lanthanide Triflate/Supported Palladium Nanoparticle Catalyst System

2012 ◽  
Vol 134 (36) ◽  
pp. 14682-14685 ◽  
Author(s):  
Abdurrahman C. Atesin ◽  
Natalie A. Ray ◽  
Peter C. Stair ◽  
Tobin J. Marks
Keyword(s):  
Catalyst System ◽  
Palladium Nanoparticle ◽  
Supported Palladium ◽  
Nanoparticle Catalyst

Investigation of Methane Oxidation Reactions Over a Dual-Bed Catalyst System using18O Labelled DRIFTS coupling

ChemSusChem ◽  
2016 ◽  
Vol 10 (1) ◽  
pp. 210-219 ◽  
Author(s):  
Melissandre Richard ◽  
Daniel Duprez ◽  
Nicolas Bion ◽  
Fabien Can
Keyword(s):  
Methane Oxidation ◽  
Catalyst System ◽  
Oxidation Reactions ◽  
Dual Bed

scholarly journals Microkinetic Modeling of the Oxidation of Methane Over PdO Catalysts—Towards a Better Understanding of the Water Inhibition Effect

Catalysts ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 922
Author(s):  
Kevin Keller ◽  
Patrick Lott ◽  
Henning Stotz ◽  
Lubow Maier ◽  
Olaf Deutschmann
Keyword(s):  
Active Sites ◽  
Catalyst Deactivation ◽  
Field Approximation ◽  
Mean Field Approximation ◽  
Excess Oxygen ◽  
Total Oxidation ◽  
Kinetic Measurements ◽  
Microkinetic Model ◽  
Oxidation Of Methane ◽  
Catalytically Active

Water, which is an intrinsic part of the exhaust gas of combustion engines, strongly inhibits the methane oxidation reaction over palladium oxide-based catalysts under lean conditions and leads to severe catalyst deactivation. In this combined experimental and modeling work, we approach this challenge with kinetic measurements in flow reactors and a microkinetic model, respectively. We propose a mechanism that takes the instantaneous impact of water on the noble metal particles into account. The dual site microkinetic model is based on the mean-field approximation and consists of 39 reversible surface reactions among 23 surface species, 15 related to Pd-sites, and eight associated with the oxide. A variable number of available catalytically active sites is used to describe light-off activity tests as well as spatially resolved concentration profiles. The total oxidation of methane is studied at atmospheric pressure, with space velocities of 160,000 h−1 in the temperature range of 500–800 K for mixtures of methane in the presence of excess oxygen and up to 15% water, which are typical conditions occurring in the exhaust of lean-operated natural gas engines. The new approach presented is also of interest for modeling catalytic reactors showing a dynamic behavior of the catalytically active particles in general.

Anin SituElectrical Conductivity Study of a CeO2Aerogel Supported Palladium Catalyst in Correlation with the Total Oxidation of Propane

1996 ◽  
Vol 159 (2) ◽  
pp. 361-367 ◽  
Author(s):  
Jean-Marie Herrmann ◽  
Can Hoang-Van ◽  
Lucie Dibansa ◽  
Rondronirina Harivololona
Keyword(s):  
Palladium Catalyst ◽  
Total Oxidation ◽  
Supported Palladium Catalyst ◽  
Supported Palladium
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