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Heterogeneous Catalytic Oxidation of Simple Alcohols by Transition Metals.
Jacobse, Leon; Vink, Sebastiaan O; Wijngaarden, Sven; Juurlink, Ludo B F.
Afiliação
  • Jacobse L; Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300RA Leiden, The Netherlands.
  • Vink SO; Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300RA Leiden, The Netherlands.
  • Wijngaarden S; Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300RA Leiden, The Netherlands.
  • Juurlink LBF; Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, 2300RA Leiden, The Netherlands.
J Chem Educ ; 94(9): 1285-1287, 2017 Sep 12.
Artigo em Inglês | MEDLINE | ID: mdl-28919644
ABSTRACT
The "exploding" flask demonstration presents a well-known illustration of heterogeneous catalyzed methanol oxidation. We find that for the same vapor pressure, the demonstration also works for all primary and secondary alcohols up to butanol but not for a tertiary alcohol. Also, we show that the demonstration works for a large range of transition metal catalysts. Hence, this demonstration, which is often applied for the repetitive explosions when methanol is used, may also be used to argue the requirement of initial dehydrogenation of the alcohol to an aldehyde in the catalytic reaction mechanism to support the general insensitivity to reactant molecules in heterogeneous catalysis in contrast to biological catalysis and to provide proof for activity trends as often depicted by volcano plots.

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Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Idioma: Inglês Revista: J Chem Educ Ano de publicação: 2017 Tipo de documento: Artigo País de afiliação: Holanda