Título: International Journal of Hydrogen EnergyImportada do Authenticus Pesquisar Publicações da Revista

Vol. 38 Nº 36

Páginas: 16286-16299

ISSN: 0360-3199

Editora: Elsevier

ISI Web of Knowledge - 13 Citações

ISI Web of Science

Scopus - 12 Citações

INSPEC

FOS: Ciências da engenharia e tecnologias > Engenharia química

ID Authenticus: P-006-J4Z

DOI: 10.1016/j.ijhydene.2013.10.037

Abstract (EN): The use of hydrogen with lower quality than that specified in current regulation is an attractive option for stationary PEMFC power production. In this paper, the effect of CO is mitigated using air bleed levels up to 2% in an H-2 PEMFC fed with CO concentrations below 20 ppm. A methodology to optimize the air bleed levels is developed using a novel arrangement of cells coupled to a gas chromatograph. The methodology relies on evaluating the distributed performance of the cell and on determining the CO and CO2 molar flow rates at the anode outlet. Furthermore, the amount of CO adsorbed onto the catalyst and the fraction of catalytic sites covered by CO are estimated. The results show that different parameters, such as the H-2 volumetric flow rate, CO concentration and air bleed level, influence both the steady state and dynamics of PEMFCs operated with low quality hydrogen. Copyright

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Notas: Publicação abrangida pelo Journal Citation Reports 2015

Nº de páginas: 14