Journal ArticleDOI
Room temperature photo-activation of methane on TiO2 supported molybdena
TLDR
In this article, the deposition of 4% molybdena has a pronounced effect on methane activation, partial oxidation to CO becoming a competing pathway, and CO is the major oxidation product if TiO2 loaded with both MoO3 and H4SiW12O40 is used as a catalyst.Abstract:
Methane is activated at room temperature and atmospheric pressure on TiO2, supported molybdena catalyst excited by band gap illumination. With pure TiO2, complete oxidation to CO2 is observed in the presence of oxygen. The deposition of 4% molybdena has a pronounced effect on methane activation, partial oxidation to CO becoming a competing pathway. CO is the major oxidation product if TiO2 loaded with both MoO3 and H4SiW12O40 is used as a catalyst. MoO3 used alone or in conjunction -with A12O3 or SiO2 as carriers exhibits poor activity in the photoactivation of methane.read more
Citations
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Photocatalytic oxidation of methane over silver decorated zinc oxide nanocatalysts.
TL;DR: It is shown that when the particle size of zinc oxide is reduced down to the nanoscale, it exhibits high activity for methane oxidation under simulated sunlight illumination, and nano silver decoration further enhances the photo-activity via the surface plasmon resonance.
Journal ArticleDOI
From Solar Energy to Fuels: Recent Advances in Light-Driven C1 Chemistry.
Guangbo Chen,Guangbo Chen,Geoffrey I. N. Waterhouse,Run Shi,Jiaqing Zhao,Zhenhua Li,Li-Zhu Wu,Chen-Ho Tung,Tierui Zhang +8 more
TL;DR: This review highlights recent advances and milestones in light-driven C1 chemistry, including solar Fischer-Tropsch synthesis, water-gas-shift reaction, CO2 hydrogenation, methane and methanol conversion reactions, with particular emphasis on the rational design of catalysts, structure-reactivity relationships as well as reaction mechanisms.
Journal ArticleDOI
Photocatalytic conversion of methane
Leny Yuliati,Hisao Yoshida +1 more
TL;DR: This tutorial review provides a brief history about developments in the methane conversion and specially highlights the development in the photocatalytic conversion of methane, such as methane coupling and methane conversion with other molecules.
Journal ArticleDOI
Fighting global warming: The potential of photocatalysis against CO2, CH4, N2O, CFCs, tropospheric O3, BC and other major contributors to climate change
TL;DR: In this paper, a review article shows that photocatalysis may be applied successfully to eliminate or transform of all major long-lived well mixed greenhouse gases, but also soot and tropospheric ozone and other short-lived climate forcers.
Journal ArticleDOI
Activation of methane by oxygen and nitrogen oxides
K. Tabata,Y. Teng,T. Takemoto,E. Suzuki,Miguel A. Bañares,Miguel A. Peña,José Luis García Fierro +6 more
TL;DR: A transition state of species n CSTR continuous stirred tank reactor DFT density-functional theory E a apparent activation energy FT Fischer-Tropsch synthesis H° enthalpy of formation JSR jet sti...
References
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Journal ArticleDOI
Oxidative dimerization of methane over a lithium-promoted magnesium oxide catalyst
Journal ArticleDOI
Formation of gas-phase methyl radicals over magnesium oxide
TL;DR: In this article, the EPR spectroscopy was used to analyze the initial activity of MgO at temperatures of approximately 500/sup 0/C and showed that methyl radicals were produced on the surface, released into the gas phase, and trapped downstream in a solid argon matrix.
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Synthesis of ethylene and ethane by partial oxidation of methane over lithium-doped magnesium oxide
Tomoyasu Ito,Jack H. Lunsford +1 more
TL;DR: In this paper, it was shown that lithium-doped magnesium oxide (Li/MgO) in the presence of O2 has high activity for abstracting H from CH4 to form ·CH3 radicals.
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Photochemistry of semiconductor colloids. 22. Electron ejection from illuminated cadmium sulfide into attached titanium and zinc oxide particles
TL;DR: In this paper, the photocatalytic action of colloidal or suspended semicon-ductor particles is based on the generation of electrons and positive holes which rapidly move to the surface of the particles and initiate redox processes.
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Partial Oxidation of Methane
R. Pitchai,Kamil Klier +1 more
TL;DR: Partial oxidation is a widely used process to convert hydrocarbons and alcohols to valuable oxygen-containing chemicals as discussed by the authors, however, the direct utilization of these reactions for the manufacture of formaldehyde and methanol has remained extremely difficult.