Methane partial oxidation over a LaCr 0.85 Ru 0.15 O 3 catalyst: Characterization, activity tests and kinetic modeling

Melchiori, Tommaso; Felice, Luca Di; Mota, N.; Navarro, R.M.; Fierro, J.L.G.; Annaland, van M Martin Sint; Gallucci, Fausto

doi:10.1016/j.apcata.2014.08.040

Cited by 27 publications

(12 citation statements)

References 30 publications

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“…The equilibrium constant (K) for the water-gas-shift reaction as a function of the absolute temperature was calculated as follows 30 log K ð Þ521:2471 8:…”

Section: Mathematical Model Transport and Kinetic Model Equationsmentioning

confidence: 99%

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Catalytic partial oxidation of CH₄ over bimetallic Ni‐Re/Al₂O₃: Kinetic determination for application in microreactor

et al. 2017

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The activity of a novel Ni-Re/Al 2 O 3 catalyst toward partial oxidation of methane was investigated in comparison with that of a precious-metal Rh/Al 2 O 3 catalyst. Reactions involving CH 4 /O 2 /Ar, CH 4 /H 2 O/Ar, CH 4 /CO 2 /Ar, CO/O 2 /Ar, and H 2 /O 2 /Ar were performed to determine the kinetic expressions based on indirect partial oxidation scheme. A mathematical model comprising of Ergun equation as well as mass and energy balances with lumped indirect partial oxidation network was applied to obtain the kinetic parameters and then used to predict the reactant and product concentrations as well as temperature profiles within a fixed-bed microreactor. H 2 and CO production as well as H 2 /CO 2 and CO/CO 2 ratios from the reaction over Ni-Re/Al 2 O 3 catalyst were higher than those over Rh/Al 2 O 3 catalyst. Simulation revealed that much smoother temperature profiles along the microreactor length were obtained when using Ni-Re/Al 2 O 3 catalyst. Steep hot-spot temperature gradients, particularly at the entrance of the reactor, were, conversely, noted when using Rh/Al 2 O 3 catalyst.

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“…The equilibrium constant (K) for the water-gas-shift reaction as a function of the absolute temperature was calculated as follows 30 log K ð Þ521:2471 8:…”

Section: Mathematical Model Transport and Kinetic Model Equationsmentioning

confidence: 99%

“…The equilibrium constant ( K ) for the water‐gas‐shift reaction as a function of the absolute temperature was calculated as follows

normall normalo normalg true(K true) = - 1.247 + (|, 8.269 \times 10^{2}) T^{- 1} + (|, 7.389 \times 10^{5}) T^{- 2} - (|, 1.902 \times 10^{8}) T^{- 3} + (|, 1.850 \times 10^{10}) T^{- 4}

…”

Section: Mathematical Modelmentioning

confidence: 99%

Catalytic partial oxidation of CH₄ over bimetallic Ni‐Re/Al₂O₃: Kinetic determination for application in microreactor

et al. 2017

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“…The main component of natural gas is CH4 which itself is a GHG but can be used in green energy applications which have been a focus of researchers owing to their high efficiency and low emissions [13][14][15][16]. The CH4 is usually converted to syngas using steam methane reforming [17], dry reforming [18][19][20], and partial oxidation of methane (POM) [4, [21][22][23]. Both the reforming processes are very endothermic, i.e.…”

Section: Introductionmentioning

confidence: 99%

“…high temperature and/or high pressure of CH4 is required, whereas none of these are required for POM to syngas as it is an exothermic process [4,24]. Moreover, POM yields a hydrogen to carbon monoxide ratio of >1 which is ideal for Fischer-Tropsch synthesis for liquid fuel production [9, 22,25].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Ash Derived Co/Zeolite Catalyst for Hydrogen Rich Syngas Production via Partial Oxidation of Methane

Zaffar

Khan

Khoja

et al. 2021

Bull. Chem. React. Eng. Catal.

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The objective of this study was to analyze the catalytic performance of series of cobalt-modified Zeolite-4A supported catalysts for the syngas (CO and H2) production at 800 °C via the partial oxidation of methane (POM). The Co/Zeolite-4A catalyst was synthesized using a two-step hydrothermal method from coal fly ash. The synthesized catalysts were characterized by X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), Energy Dispersive X-ray (EDX), and Thermogravimetric Analysis (TGA). The catalyst shows a crystalline structure with stability up to 900 °C. The catalytic performance analysis shows the CH4 conversion increases from 29 to 68% for 0 and 10 wt% Co over Zeolite-4A, respectively. The H2 selectivity was improved from 28–56% while CO selectivity increased from 24–52 % making H2/CO ratio > 1. The stability analysis shows the 10% Co/Zeolite-4A withstand for 24 h a time on stream (TOS). Finally, the spent catalyst analysis was carried out to check the carbon formation along with its structural analysis. The minimal carbon formation is analyzed in 24 h TOS for POM reaction. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

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“…Currently, the methods for synthesizing catalysts include impregnation [8], coprecipitation method [9], and sol-gel method [10]. The coprecipitation method is widely applied in industrial production because of its advantages of simple operation, convenient large-scale manufacturing, and ease of morphology control.…”

Section: Introductionmentioning

confidence: 99%

Impact of Precipitants on the Structure and Properties of Fe-Co-Ce Composite Catalysts

Zhang

Dai

Zhou

et al. 2016

Journal of Nanomaterials

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Fe-Co-Ce composite catalysts were prepared by coprecipitation method using CO(NH2)2, NaOH, NH4HCO3, and NH3·H2O as precipitant agents. The effects of the precipitant agents on the physicochemical properties of the Fe-Co-Ce based catalysts were investigated by SEM, TEM, BET, TG-DTA, and XRD. It was found that the precipitant agents remarkably influenced the morphology and particle size of the catalysts and affected the COD removal efficiency, decolorization rate, and pH of methyl orange for catalytic wet air oxidation (CWAO). The specific surface area of the Fe-Co-Ce composite catalysts successively decreased in the order of NH3·H2O, NH4HCO3, NaOH, and CO(NH2)2, which correlated to an increasing particle size that increased for each catalyst. For the CWAO of a methyl orange aqueous solutions, the effects of precipitant agents NH3·H2O and NaOH were superior to those of CO(NH2)2and NH4HCO3. The catalyst prepared using NH3·H2O as the precipitant agent was mostly composed of Fe2O3, CoO, and CeO2. The COD removal efficiency of methyl orange aqueous solution for NH3·H2O reached 92.9% in the catalytic wet air oxidation. Such a catalytic property was maintained for six runs.

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Methane partial oxidation over a LaCr 0.85 Ru 0.15 O 3 catalyst: Characterization, activity tests and kinetic modeling

Cited by 27 publications

References 30 publications

Catalytic partial oxidation of CH₄ over bimetallic Ni‐Re/Al₂O₃: Kinetic determination for application in microreactor

Catalytic partial oxidation of CH₄ over bimetallic Ni‐Re/Al₂O₃: Kinetic determination for application in microreactor

Synthesis of Ash Derived Co/Zeolite Catalyst for Hydrogen Rich Syngas Production via Partial Oxidation of Methane

Impact of Precipitants on the Structure and Properties of Fe-Co-Ce Composite Catalysts

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Methane partial oxidation over a LaCr 0.85 Ru 0.15 O 3 catalyst: Characterization, activity tests and kinetic modeling

Cited by 27 publications

References 30 publications

Catalytic partial oxidation of CH4 over bimetallic Ni‐Re/Al2O3: Kinetic determination for application in microreactor

Catalytic partial oxidation of CH4 over bimetallic Ni‐Re/Al2O3: Kinetic determination for application in microreactor

Synthesis of Ash Derived Co/Zeolite Catalyst for Hydrogen Rich Syngas Production via Partial Oxidation of Methane

Impact of Precipitants on the Structure and Properties of Fe-Co-Ce Composite Catalysts

Contact Info

Product

Resources

About

Catalytic partial oxidation of CH₄ over bimetallic Ni‐Re/Al₂O₃: Kinetic determination for application in microreactor

Catalytic partial oxidation of CH₄ over bimetallic Ni‐Re/Al₂O₃: Kinetic determination for application in microreactor