The oxidative conversion of methane to higher hydrocarbons over alkali-promoted Mn/SiO2

Jones, C. A.; Leonard, John J.; Sofranko, John A.

doi:10.1016/0021-9517(87)90123-0

Cited by 201 publications

(39 citation statements)

References 6 publications

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“…[25][26][27][28][29] A similar redox concept was explored for methane coupling reactions by researchers at the Atlantic Richfield Company. [5,30] Another process concept that directly relates to CLR is chemical looping combustion/ gasification (CLC/CLG). [31][32][33][34][35] Compared with the CLC/CLG catalyst, which uses an oxygen carrier to nonselectively oxidize fuels to CO 2 and steam, the CLR redox catalyst or oxygen carrier needs to selectively oxidize the fuel to syngas.…”

Section: Introductionmentioning

confidence: 99%

Fe₂O₃@La_xSr_1−xFeO₃ Core–Shell Redox Catalyst for Methane Partial Oxidation

et al. 2014

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Efficient and environmentally friendly conversion of methane into syngas is a topic of practical relevance for the production of hydrogen, chemicals, and synthetic fuels. At present, methane‐derived syngas is produced primarily through the steam methane reforming processes. The efficiencies of such processes are limited owing to the endothermic steam methane reforming reaction and the high steam to methane ratio required by the reforming catalysts. Chemical looping reforming represents an alternative approach for methane conversion. In the chemical looping reforming scheme, a solid oxygen carrier or “redox catalyst” is used to partially oxidize methane to syngas. The reduced redox catalyst is then regenerated with air. The cyclic redox operation reduces the steam usage while simplifying the heat integration scheme. Herein, a new Fe2O3@LaxSr1−xFeO3 (LSF) core–shell redox catalyst is synthesized and investigated. Compared with several other commonly investigated iron‐based redox catalysts, the newly developed core–shell redox catalyst is significantly more active and selective for syngas production from methane. It is also more resistant toward carbon formation and maintains high activity over cyclic redox operations.

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Section: Introductionmentioning

confidence: 99%

Fe₂O₃@La_xSr_1−xFeO₃ Core–Shell Redox Catalyst for Methane Partial Oxidation

et al. 2014

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“…In 1988 Bechtel [62] did a study to choose three direct conversion processes for firther study. Partial oxidation, oxidative coupling and oxyhydrochlorination were selected fiom a list of nineteen processes.…”

Section: Gasoline By Oxidative Coupling Of Methane and Oligomerizationmentioning

confidence: 99%

Economic evaluation and market analysis for natural gas utilization. Topical report

Hackworth¹,

Koch²,

Rezaiyan³

1995

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“…This process is called oxidative coupling of methane. To date, the best sustainable yields obtained by the optimization of the reaction conditions are close to 20% in the ARC0 (Jones et al, 1987b) and CSIRO/BHP processes (Edwards et al, 1990). Over three hundred papers and patents have been published on this subject during the last ten years (Baerns et al, 1989), including a significant Canadian contribution to the effort (e.g.…”

Section: Heterogeneous Catalysismentioning

confidence: 99%

“…In this process the catalyst lowers the reaction temperature and improves the C2+ selectivity. To date, the best sustainable yields obtained by the optimization of the reaction conditions are close to 20% in the ARC0 (Jones et al, 1987b) and CSIRO/BHP processes (Edwards et al, 1990).…”

Section: Heterogeneous Catalysismentioning

confidence: 99%

“…Gaseous oxygen is then required to reoxidize the catalyst, and thus to restore its activity. Gas phase methyl radicals have been detected by physical and chemical trapping, isotopic, and spectroscopic techniques (Jones et al, 1987b;Lunsford, 1988: Amorebieta andColussi, 1988;Nelson et al, 1988), which suggests that methyl radicals generated at the surface are released into the gas phase, where they couple. Several parallel and consecutive reactions lead to ethylene from ethane, homologation to some C3+ from C2, a small amount of hydrogen, and to carbon oxides by the reactions of oxygen with methyl radicals and with C 2 + .…”

Section: Role Of the Catalystmentioning

confidence: 99%

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Direct catalytic conversion of methane

Poirier¹,

Sanger²,

Smith³

1991

Can J Chem Eng

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Processes are being developed for the direct catalytic oxidative conversion of methane to higher hydrocarbons and oxygenates. The role of the catalyst in generating methyl radicals is established, and subsequent gas-phase reactions are well understood. However, the role of several catalyst surface species remains a subject of interest. Application of present process technology using the most promising catalysts shows that direct methane conversion is not yet competitive with conventional processes. Increased yields of desirable products using new process configurations are required to obtain an economically viable process. ~~~ ~~~~~Differents procedes catalytiques ont ricemment Cte proposes pour realiser la conversion directe du melange methane/ oxygkne en hydrocarbures supkrieurs ou en produits oxygenis. Les travaux effectues ce jour ont montre que le rAle du catalyseur est de gCnCrer des radicaux methyles. lesquels sont lib&& en phase gazeuse ou ils riagissent. Cependant. le r6le exact de plusieurs intermediaires presents P la surface des catalyseurs continue a &tre Ctudie intensivement. Les rtsultats obtenus avec les catalyseurs les plus promotteurs en utilisant les types de reacteurs presentement rencontres dans I'industrie montrent que la conversion directe du methane n'est pas competitive par rapport aux procedes conventionnels. Un nouveau type de reacteur catalytique permettant d'obtenir des rendements plus Cleves en produits utiles est necessaire pour en arriver i un procedt economiquement viable.Keywords: methane, direct catalytic conversion of methane, oxidative coupling, partial oxidation.atural gas, of which methane is the major constituent,

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The oxidative conversion of methane to higher hydrocarbons over alkali-promoted Mn/SiO2

Cited by 201 publications

References 6 publications

Fe₂O₃@La_xSr_1−xFeO₃ Core–Shell Redox Catalyst for Methane Partial Oxidation

Fe₂O₃@La_xSr_1−xFeO₃ Core–Shell Redox Catalyst for Methane Partial Oxidation

Economic evaluation and market analysis for natural gas utilization. Topical report

Direct catalytic conversion of methane

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The oxidative conversion of methane to higher hydrocarbons over alkali-promoted Mn/SiO2

Cited by 201 publications

References 6 publications

Fe2O3@LaxSr1−xFeO3 Core–Shell Redox Catalyst for Methane Partial Oxidation

Fe2O3@LaxSr1−xFeO3 Core–Shell Redox Catalyst for Methane Partial Oxidation

Economic evaluation and market analysis for natural gas utilization. Topical report

Direct catalytic conversion of methane

Contact Info

Product

Resources

About

Fe₂O₃@La_xSr_1−xFeO₃ Core–Shell Redox Catalyst for Methane Partial Oxidation

Fe₂O₃@La_xSr_1−xFeO₃ Core–Shell Redox Catalyst for Methane Partial Oxidation