Direct oxidation of methane to methanol over proton conductor/metal mixed catalysts

Autor:	Yosuke Sakamoto, Byungik Lee, Daisuke Hirabayashi, Takashi Hibino, Kenzi Suzuki
Rok vydání:	2010
Předmět:	Inorganic chemistry Electrocatalyst Catalysis Methane Electrochemical cell Metal chemistry.chemical_compound chemistry visual_art Anaerobic oxidation of methane visual_art.visual_art_medium Methanol Physical and Theoretical Chemistry Proton conductor
Zdroj:	Journal of Catalysis. 271:195-200
ISSN:	0021-9517
DOI:	10.1016/j.jcat.2010.01.011
Popis:	The intermediate-temperature and low-pressure production of methanol from methane in a one-pass process was investigated using a micro- or nanosized electrocatalyst system. The powdered catalyst was prepared by mixing proton-conducting Sn 0.9 In 0.1 P 2 O 7 particles with high-activity Pd–Au–Cu/C particles to provide numerous electrolyte–electrode interfaces as reaction sites for methane oxidation. For a feed mixture of H 2 O, O 2 , and methane, a local electrochemical cell can be formed at the electrode–electrolyte interface: H 2 O → 1/2O 2 + 2H + + 2e − at the anode site; O 2 + CH 4 + 2H + + 2e − → CH 3 OH + H 2 O at the cathode site. In addition, the electrode also functions as a lead wire that short-circuits the cell. Therefore, the overall reaction can be expected to be CH 4 + 1/2O 2 → CH 3 OH. The series of reactions successfully resulted in reduction in the temperature for initiation of methane oxidation to 250 °C and increased the methanol yield while maintaining a very high selectivity toward methanol for temperatures up to 400 °C.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6122790bc01fbf6f1a99a9b904ff72b1 https://doi.org/10.1016/j.jcat.2010.01.011 Zobrazit plný text záznamu Full Text from ScienceDirect