Bromine catalyst for the methane to methyl bisulfate reaction

Michalkiewicz, Beata; Balcer, Sylwia

doi:10.2478/v10026-012-0096-z

Cited by 9 publications

(3 citation statements)

References 16 publications

(4 reference statements)

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“…In an effort to extend the reactivity shown with I to Br, Michalkiewicz examined Br – salts in oleum for methane oxidation to MeOSO 3 H. As previous experiments were unsuccessful at lower concentrations of oleum with bromide salts, the authors showed that the reaction proceeds only above 6.6 wt % SO 3 and 500 psi methane.…”

Section: Catalytic Systems That Utilize O2/o2-regenerable Oxidants An...mentioning

confidence: 99%

“…In an effort to extend the reactivity shown with I to Br, Michalkiewicz 151 examined Br − salts in oleum for methane oxidation to MeOSO 3 H. As previous experiments were unsuccessful at lower concentrations of oleum with bromide salts, the authors showed that the reaction proceeds only above 6.6 wt % SO 3 and 500 psi methane. Interestingly, only two systems that have been reported fit into this category, where the stoichiometric oxidant that directly reacts with methane is O 2 -regenerable.…”

Section: Iodinementioning

confidence: 99%

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Homogeneous Functionalization of Methane

et al. 2017

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One of the remaining "grand challenges" in chemistry is the development of a next generation, less expensive, cleaner process that can allow the vast reserves of methane from natural gas to augment or replace oil as the source of fuels and chemicals. Homogeneous (gas/liquid) systems that convert methane to functionalized products with emphasis on reports after 1995 are reviewed. Gas/solid, bioinorganic, biological, and reaction systems that do not specifically involve methane functionalization are excluded. The various reports are grouped under the main element involved in the direct reactions with methane. Central to the review is classification of the various reports into 12 categories based on both practical considerations and the mechanisms of the elementary reactions with methane. Practical considerations are based on whether or not the system reported can directly or indirectly utilize O as the only net coreactant based only on thermodynamic potentials. Mechanistic classifications are based on whether the elementary reactions with methane proceed by chain or nonchain reactions and with stoichiometric reagents or catalytic species. The nonchain reactions are further classified as CH activation (CHA) or CH oxidation (CHO). The bases for these various classifications are defined. In particular, CHA reactions are defined as elementary reactions with methane that result in a discrete methyl intermediate where the formal oxidation state (FOS) on the carbon remains unchanged at -IV relative to that in methane. In contrast, CHO reactions are defined as elementary reactions with methane where the carbon atom of the product is oxidized and has a FOS less negative than -IV. This review reveals that the bulk of the work in the field is relatively evenly distributed across most of the various areas classified. However, a few areas are only marginally examined, or not examined at all. This review also shows that, while significant scientific progress has been made, greater advances, particularly in developing systems that can utilize O, will be required to develop a practical process that can replace the current energy and capital intensive natural gas conversion process. We believe that this classification scheme will provide the reader with a rapid way to identify systems of interest while providing a deeper appreciation and understanding, both practical and fundamental, of the extensive literature on methane functionalization. The hope is that this could accelerate progress toward meeting this "grand challenge."

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Section: Catalytic Systems That Utilize O2/o2-regenerable Oxidants An...mentioning

confidence: 99%

Section: Iodinementioning

confidence: 99%

Homogeneous Functionalization of Methane

et al. 2017

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“…Synthesis of methanol 9-11 and formaldehyde 8-13 , oxidative coupling of methane 14 and conversion to aromatics 15 without an oxidant, can be considered as direct conversion ways of methane. The interesting method of methane esterifi cation in the oleum to methyl bisulphate was also studied and described [16][17][18][19][20][21][22] in the literature. The methyl bisulphate can be easily hydrolyzed to methanol 22-28 .…”

Section: Introductionmentioning

confidence: 99%

Activated carbons from common nettle as potential adsorbents for CO₂ capture

Szymańska

Skoczek

Przepiórski

2019

Polish Journal of Chemical Technology

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Activated carbons (ACs) prepared from common nettle (Urtica Dioica L.) were studied in terms of carbon dioxide adsorption. ACs were prepared by KOH chemical activation in a nitrogen atmosphere at temperatures (ranging from 500 to 850°C). The pore structure and the surface characterization of the ACs were specified based on adsorption-desorption isotherms of nitrogen measured at –196°C and carbon dioxide at 0°C. The specific surface area was calculated according to the BET equation. The pore volume was estimated using the DFT method. The highest values of the specific surface area (SSA) showed activated carbons produced at higher carbonization temperatures. All samples revealed presence of micropores and mesopores with a diameter range of 0.3–10 nm. The highest value of the CO2 adsorption, 4.22 mmol/g, was found for the material activated at 700°C.

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Die direkte katalytische Oxidation von Methan zu Methanol – eine kritische Beurteilung

2017

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Es gibt vielzählige direkte, selektive Ansätze, um Methan partiell zu oxidieren, jedoch ist noch keiner von ihnen zur industriellen Reife gelangt. In diesem Zusammenhang ist die Oxidation von Methan zu Methanol eine schwierige, aber lohnende Aufgabe, da sie eine wirkungsvolle Methode ist, um das Abfackeln von Erdgas, das als Nebenprodukt in der Erdölindustrie anfällt, zu unterbinden, und zugleich die Möglichkeit bietet, Methan zu valorisieren. Dieser Aufsatz berücksichtigt die Synthese von Methanol und seinen Derivaten ausgehend von Methan durch homogen‐ und heterogenkatalytische Methoden. Er zeigt die starken Einschränkungen der direkten katalytischen Synthese von Methanol aus Methan auf und unterstreicht dabei die enorme Überlegenheit von Systemen, die Methanolderivate produzieren oder sich durch Besonderheiten wie die Verwendung von Mehrkomponenten‐Katalysatoren zur Methanolstabilisierung auszeichnen. Für die zukünftige Forschung erweist sich die Stabilisierung von Methanol in der homogenen und heterogenen Katalyse als unentbehrlich.

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Bromine catalyst for the methane to methyl bisulfate reaction

Abstract: A catalytic system KBr -oleum is effective at catalyzing the selective oxidation of methane to methanol via. methyl bisulfate. The infl uences of methane pressure, sulfur trioxide and temperature on turnover frequency were investigated.

Cited by 9 publications

References 16 publications

Homogeneous Functionalization of Methane

Homogeneous Functionalization of Methane

Activated carbons from common nettle as potential adsorbents for CO₂ capture

Die direkte katalytische Oxidation von Methan zu Methanol – eine kritische Beurteilung

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Bromine catalyst for the methane to methyl bisulfate reaction

Abstract: A catalytic system KBr -oleum is effective at catalyzing the selective oxidation of methane to methanol via. methyl bisulfate. The infl uences of methane pressure, sulfur trioxide and temperature on turnover frequency were investigated.

Cited by 9 publications

References 16 publications

Homogeneous Functionalization of Methane

Homogeneous Functionalization of Methane

Activated carbons from common nettle as potential adsorbents for CO2 capture

Die direkte katalytische Oxidation von Methan zu Methanol – eine kritische Beurteilung

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Product

Resources

About

Activated carbons from common nettle as potential adsorbents for CO₂ capture