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

Vol. 40 Nº 20

Páginas: 6566-6572

ISSN: 0360-3199

Editora: Elsevier

ISI Web of Knowledge - 10 Citações

ISI Web of Science

Scopus - 22 Citações

FOS: Ciências da engenharia e tecnologias > Engenharia química

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia química

ID Authenticus: P-00A-D5F

DOI: 10.1016/j.ijhydene.2015.03.106

Resumo (PT):

Abstract (EN): The permeability of a 0.175 mm thick PdeAg tubular membrane to pure H2 and binary mixtures of H2/CO or H2/CO2 was studied. The tests were performed in a wide range of temperature (523e723 K) and pressure (200e800 kPa). Pure H2-permeation through a dense metal membrane is described by the Sieverts' law. However, it was already found that the H2 permeation does not follow the Sieverts' law when other components are present in the feed and namely CO or CO2. In this work, it is proposed a new permeation model based on the Sieverts' law considering: i) the mass transfer resistance due to the surface effects and ii) the barrier effect due to the presence of either CO or CO2. The model was successfully validated against experimental data of hydrogen permeation for binary (H2/CO and H2/CO2) experiments for every working temperature and pressure.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Notas: Publicação abrangida pelo Journal Citation Reports 2015

Nº de páginas: 7