My watch list
my.chemeurope.com  
Login  

Light‐driven C‐H Oxygenation of Methane into Methanol and Formic Acid by Molecular Oxygen Using Perfluorinated Solvent

Chlorine dioxide radical (ClO2*) was found to act as an efficient oxidizing agent in the aerobic oxygenation of methane to methanol and formic acid under photoirradiation. Photochemical oxygenation of methane occurred in a two‐phase system comprising perfluorohexane and water under ambient conditions (298 K, 1 atm). The yields of methanol and formic acid were 14% and 85%, respectively, with a methane conversion of 99% without formation of the further oxygenated products such as CO2 and CO. Ethane was also photochemically converted into ethanol (19%) and acetic acid (78%). The methane oxygenation is initiated by the photochemical Cl‐O bond cleavage of ClO2* to generate Cl* and O2. The produced Cl* reacts with CH4 to form a methyl radical (CH3*). Finally, the oxygenated products such as methanol and formic acid were given by the radical chain reaction. A fluorous solvent plays an important role of inhibiting the deactivation of reactive radical species such as Cl* and CH3*.

Authors:   Kei Ohkubo, Kensaku Hirose
Journal:   Angewandte Chemie
Year:   2017
Pages:   n/a
DOI:   10.1002/ange.201710945
Publication date:   11-Dec-2017
More about Angewandte Chemie
  • News

    Polymers with Helical Blocks

    Polymers, the basis of all plastics, usually do not have an ordered structure, in contrast to biopolymers such as proteins. A team of researchers has now developed a polymer that can be differentiated into folded (ordered) and unfolded (disordered) domains using UV irradiation. The team’s w ... more

    Methane from Carbon Dioxide

    Recycling carbon dioxide (CO2), especially through conversion to methane (CH4), is compelling while anthropogenic CO2 emissions are still rising. A useful process for this transformation is photothermal methanation, in which CO2 and hydrogen are catalytically converted into CH4 and water u ... more

    Liquid Fuels from Carbon Dioxide

    A new electrocatalyst called a-CuTi@Cu converts carbon dioxide (CO2 ) into liquid fuels. As reported by a team of Chinese researchers in the journal Angewandte Chemie, active copper centered on an amorphous copper/titanium alloy produces ethanol, acetone, and n-butanol with high efficiency. ... more

More about Wiley
Your browser is not current. Microsoft Internet Explorer 6.0 does not support some functions on Chemie.DE