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  On the mechanism of the selective oxidation of methanol over elemental silver

Schlögl, R., Tegtmeyer, U., & Schubert, H. (1994). On the mechanism of the selective oxidation of methanol over elemental silver. Catalysis Letters, 28, 383-395. doi:10.1007/BF00806069.

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 Creators:
Schlögl, Robert1, Author           
Tegtmeyer, U.2, Author           
Schubert, H.2, Author           
Affiliations:
1Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              
2Fritz Haber Institute, Max Planck Society, ou_24021              

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 Abstract: We analysed previously the interaction of silver with oxygen and characterised three different atomic oxygen species. The present communication uses TPRS data to assign a chemical function to each of these three species prepared on a sample of practical electrolytic silver particles. With stationary and instationary conversion experiments close to practical conditions we confirmed the conclusions from the TPRS data also to hold qualitatively for the stationary operating catalyst. Surface oxygen was found to react in an oxydehydrogenation reaction with adsorbed methanol with a significant selectivity to total oxidation. “Sub-surface” oxygen catalyses the dehydrogenation of the adsorbed methanol with no selectivity to total oxidation. Dissolved atomic oxygen from the bulk replenishes both surface species via “sub-surface” oxygen. The interconversion of all three species at the high reaction temperatures required to overcome the barriers for the formation and motion of the various atomic oxygen species limits the overall selectivity of the formaldehyde production.

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Language(s): eng - English
 Dates: 1995-07-301994-08-101994-06
 Publication Status: Published in print
 Pages: 13
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1007/BF00806069
 Degree: -

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Title: Catalysis Letters
  Abbreviation : Catal. Letters
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: New York : Springer
Pages: 13 Volume / Issue: 28 Sequence Number: - Start / End Page: 383 - 395 Identifier: ISSN: 1011-372X
CoNE: https://pure.mpg.de/cone/journals/resource/954925586300