ELECTROCHEMICAL REDUCTION OF CARBON DIOXIDE TO HYDROCARBONS WITH HIGH FARADAIC EFFICIENCY IN LIOH/METHANOL

作者: Satoshi Kaneco , Kenji Iiba , Syo-ko Suzuki , Kiyohisa Ohta , Takayuki Mizuno

DOI: 10.1021/JP990021J

关键词: HydrocarbonMethanolFormic acidCarbon monoxideInorganic chemistryMethaneChemistryElectrochemical reduction of carbon dioxidePotassium hydroxideLithium hydroxide

摘要: The electrochemical reduction of CO2 with a Cu electrode in LiOH/methanol-based electrolyte was investigated. A divided H-type cell employed, the supporting electrolytes were 80 mmol dm-3 lithium hydroxide methanol (catholyte) and 300 potassium (anolyte). main products from methane, ethylene, carbon monoxide, formic acid. maximum current efficiency for hydrocarbons (methane ethylene) 78%, at −4.0 V vs Ag/AgCl, saturated KCl. ratio methane/ethylene, rf(CH4)/rf(C2H4), range 2.2 to 4.3. In LiOH/methanol, hydrogen formation, competing reaction reduction, depressed below 2% relatively negative potentials. On basis this work, high hydrocarbon conversion method appears be achieved. Future work advance technology may include use solar energy as electric source. This research can contribute...

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