Mechanism and model of the oscillatory electro-oxidation of methanol

Autor(es)

Sauerbrei, S. ^[1] ; Nascimento, M. A. ^[2] ; Eiswirth, M. ^{[3, 1]} ; Varela, H. ^{[2, 3]}

Afiliação do(s) autor(es)

^[1] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin - Germany

^[2] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13560970 Sao Paulo - Brazil

^[3] GIST, Ertl Ctr Electrochem & Catalysis, Kwangju 500712 - South Korea

• Tipo de documento: Artigo Científico
• Fonte: Journal of Chemical Physics; v. 132, n. 15 APR 21 2010.
• Citações Web of Science: 10

Resumo

A mechanism for the kinetic instabilities observed in the galvanostatic electro-oxidation of methanol is suggested and a model developed. The model is investigated using stoichiometric network analysis as well as concepts from algebraic geometry (polynomial rings and ideal theory) revealing the occurrence of a Hopf and a saddle-node bifurcation. These analytical solutions are confirmed by numerical integration of the system of differential equations. (C) 2010 American Institute of Physics (AU)

• Processo FAPESP: 04/04528-0 - Auto-organização dinâmica na interface sólido-líquido
• Beneficiário: Hamilton Brandão Varela de Albuquerque
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 07/04522-0 - Cinética oscilatória em eletrocatálise: modelagem e simulações numéricas
• Beneficiário: Melke Augusto do Nascimento
• Modalidade de apoio: Bolsas no Brasil - Doutorado