Partial oxidation of methane on co-precipitated Ni–Mg/Al catalysts modified with copper or iron

Kaddeche, D.; Djaidja, Abdelhamid; Barama, Akila

doi:10.1016/j.ijhydene.2017.04.281

Cited by 26 publications

(22 citation statements)

References 45 publications

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“…The reaction proceeds at a lower temperature than the gas-phase partial oxidation route [17][18][19][20], thus offering many advantages such as a reduction of undesired by-products and the ability to control the process temperature [21][22][23][24]. The catalysts used for this reaction usually contain group VIII transition metals, such as rhodium [25,26], ruthenium [27,28], platinum [29,30], palladium [31,32], nickel [33,34], iridium [35,36], and cobalt [37,38]. The reaction can proceed in short contact time reactors under high-temperature conditions [39][40][41].…”

Section: Introductionmentioning

confidence: 99%

RETRACTED: Computational Fluid Dynamics Modeling of the Catalytic Partial Oxidation of Methane in Microchannel Reactors for Synthesis Gas Production

Chen

Song

2018

Processes

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This paper addresses the issues related to the favorable operating conditions for the small-scale production of synthesis gas from the catalytic partial oxidation of methane over rhodium. Numerical simulations were performed by means of computational fluid dynamics to explore the key factors influencing the yield of synthesis gas. The effect of mixture composition, pressure, preheating temperature, and reactor dimension was evaluated to identify conditions that favor a high yield of synthesis gas. The relative importance of heterogeneous and homogenous reaction pathways in determining the distribution of reaction products was investigated. The results indicated that there is competition between the partial and total oxidation reactions occurring in the system, which is responsible for the distribution of reaction products. The contribution of heterogeneous and homogeneous reaction pathways depends upon process conditions. The temperature and pressure play an important role in determining the fuel conversion and the synthesis gas yield. Undesired homogeneous reactions are favored in large reactors, and at high temperatures and pressures, whereas desired heterogeneous reactions are favored in small reactors, and at low temperatures and pressures. At atmospheric pressure, the selectivity to synthesis gas is higher than 98% at preheating temperatures above 900 K when oxygen is used as the oxidant. At pressures below 1.0 MPa, alteration of the dimension in the range of 0.3 and 1.5 mm does not result in significant difference in reactor performance, if made at constant inlet flow velocities. Air shows great promise as the oxidant, especially at industrially relevant pressure 3.0 MPa, thereby effectively inhibiting the initiation of undesired homogeneous reactions.

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Section: Introductionmentioning

confidence: 99%

RETRACTED: Computational Fluid Dynamics Modeling of the Catalytic Partial Oxidation of Methane in Microchannel Reactors for Synthesis Gas Production

Chen

Song

2018

Processes

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“…№ 6. 2018 components of catalysts, relate to such promising methods [15][16][17][18][19]. The main advantages of these methods are: low energy costs, short synthesis times, no need for expensive equipment, the possibility of a onestage conversion of inorganic materials to final products using chemical reaction energy, an increase in non-stoichiometric phases of products due to high thermal gradient and rapid cooling rate [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Development of Composite Materials by Combustion Synthesis Method for Catalytic Reforming of Methane to Synthesis Gas

Тунгатарова¹,

Xanthopoulou²,

Kaumenova³

et al. 2018

JSC «D.V. SOKOLSKY INSTITUTE OF FUEL, CATALYSIS AND ELECTROCHEM

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“…Ir, La, and Cr, was also investigated as promoters to reduce carbon deposition [66,67] [29,70]. (NixMg1−x)Aly catalyst was studied with the addition of Cu and Fe [71]. The addition of Cu improved the selectivity to CO and H2 up to 53% and 41% respectively.…”

Section: Nickel Catalystsmentioning

confidence: 99%

Catalytic partial oxidation of methane to syngas: review of perovskite catalysts and membrane reactors

Elbadawi

et al. 2020

Catalysis Reviews

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Partial oxidation of methane (POM) offers a promising option to produce syngas for downstream processes such as hydrogen production and Fischer-Tropsch processes. POM in fixed-bed reactors requires an oxygen separation plant with high operation cost and safety risks.On the contrary, membrane reactors can provide an improved process by integrating both oxygen separation and catalytic reaction processes. With many advantages including high purity and efficient oxygen separation from the air at the catalytic reaction conditions, mixed ionic-electronic conducting membranes (MIEC) caught great attention in the scientific research field over the past two decades. In this review, POM using different catalysts in fixed-bed reactors was firstly summarised with emphasizing on perovskite-based catalysts, and then the material screening of MIEC membrane reactors was introduced and linked to the selection of conventional and perovskite catalysts. The catalytic activity, reaction mechanisms, and emerging challenges have been analyzed. Furthermore, future research directions have been outlined by highlighting the effect of electronic properties, continuous reduction-oxidation in the presence of oxygen flux, and chemical reaction mechanism on membrane/catalyst.

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Partial oxidation of methane on co-precipitated Ni–Mg/Al catalysts modified with copper or iron

Cited by 26 publications

References 45 publications

RETRACTED: Computational Fluid Dynamics Modeling of the Catalytic Partial Oxidation of Methane in Microchannel Reactors for Synthesis Gas Production

RETRACTED: Computational Fluid Dynamics Modeling of the Catalytic Partial Oxidation of Methane in Microchannel Reactors for Synthesis Gas Production

Development of Composite Materials by Combustion Synthesis Method for Catalytic Reforming of Methane to Synthesis Gas

Catalytic partial oxidation of methane to syngas: review of perovskite catalysts and membrane reactors

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