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Water Microdroplets-Initiated Methane Oxidation
Journal of the American Chemical Society, 2023The special redox reactivity of water microdroplets causes "mild ignition" of methane gas to form methane oxygenates. The C(sp3)-H bond of methane can be activated by the hydroxyl radical (OH·) or the hydrogen radical (H·) across the air-water interface (AWI) of microdroplets to generate the methyl radical (CH3·). Once CH3· is formed, it undergoes free-
Xiaowei Song +2 more
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2018
The anaerobic oxidation of methane (AOM) with sulfate as the final electron acceptor according to (CH4 + SO4 2− → HCO3 − + HS− + H2O) is the major sink of methane in the oceans and hence a significant process in the global carbon cycle and methane budget.
Knittel, K., Wegener, G., Boetius, A.
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The anaerobic oxidation of methane (AOM) with sulfate as the final electron acceptor according to (CH4 + SO4 2− → HCO3 − + HS− + H2O) is the major sink of methane in the oceans and hence a significant process in the global carbon cycle and methane budget.
Knittel, K., Wegener, G., Boetius, A.
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2010
Anaerobic methanotrophic archaea of the ANME clades -1, -2, -3 are cosmopolitan and ubiquitous in all environments on Earth where sulfate and methane intersect. Closely related gene sequences of anaerobic methanotrophs are found in subsurface and surface sediments, terrestrial, and marine settings or benthic and pelagic habitats.
Boetius, A., Knittel, K.
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Anaerobic methanotrophic archaea of the ANME clades -1, -2, -3 are cosmopolitan and ubiquitous in all environments on Earth where sulfate and methane intersect. Closely related gene sequences of anaerobic methanotrophs are found in subsurface and surface sediments, terrestrial, and marine settings or benthic and pelagic habitats.
Boetius, A., Knittel, K.
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The Biochemistry of Methane Oxidation
Annual Review of Biochemistry, 2007Methanotrophic bacteria oxidize methane to methanol in the first step of their metabolic pathway. Two forms of methane monooxygenase (MMO) enzymes catalyze this reaction: soluble MMO (sMMO) and membrane-bound or particulate MMO (pMMO). pMMO is expressed when copper is available, and its active site is believed to contain copper.
Amanda S, Hakemian, Amy C, Rosenzweig
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Methane partial oxidation to methanol-solid initiated homogeneous methane oxidation
Catalysis Letters, 1992The initiation temperature of methane partial oxidation was markedly lowered by platinum wire placed upstream of a high pressure reactor. Added hydrogen in the reactant gas promoted the methanol selectivity. The radicals formed on the platinum surface were desorbed from it and initiated the reaction.
K. Omata, N. Fukuoka, K. Fujimoto
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Methane partial oxidation. Challenge and perspective
Catalysis Today, 1998Abstract The perspectives of direct partial oxidation of methane is considered in the light of the stability of the products of its partial oxidation. New data on the partial oxidation of methane into syngas are presented. x CoO·(1− x )MgO·Al 2 O 3 catalysts exhibit excellent performance along with a high stability. Partial oxidation of methane to
V. D. SOKOLOVSKII +4 more
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Inhibitory effects of sulfur compounds on methane oxidation by a methane-oxidizing consortium
Journal of Bioscience and Bioengineering, 2015Kinetic and enzymatic inhibition experiments were performed to investigate the effects of methanethiol (MT) and hydrogen sulfide (H2S) on methane oxidation by a methane-oxidizing consortium. In the coexistence of MT and H2S, the oxidation of methane was delayed until MT and H2S were completely degraded.
Eun-Hee, Lee +4 more
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Methane oxidative coupling [PDF]
, 2016 A method of producing an oxidative coupling catalyst is disclosed by mixing particles of Fe.sub.2 O.sub.3, with a particle size in the range from 100 to 150 .mu.m, and silica, with a particle size in the range from about 150 to about 215 .mu.m. The particles are heated to a temperature of at least about 800.degree.
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Methane-oxidizing microorganisms
Microbiological Reviews, 1981I J, Higgins +3 more
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[Anaerobic methane oxidation].
Mikrobiologiia, 2005To clarify the biological mechanism of anaerobic methane oxidation, experiments were performed with samples of the Black Sea anaerobic sediments and with the aerobic methane-oxidizing bacterium Methylomonas methanica strain 12. The inhibition-stimulation analysis did not allow an unambiguous conclusion to be made about direct and independent role of ...
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