Surface effects and CO/CO2 influence in the H2 permeation through a Pd-Ag membrane: A comprehensive model

• Type: Article in International Scientific Journal
• Date: 2015

Authors

Patricia Pérez (Author) FEUP; Carolina A. Cornaglia (Author) Other; Adélio Mendes (Author) FEUP; Luís M. Madeira (Author) FEUP; Silvano Tosti (Author) Other

Journal

Title: International Journal of Hydrogen Energy

Vol. 40 No. 20

Pages: 6566-6572

ISSN: 0360-3199

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 10 Citations

ISI Web of Science

Scopus - 22 Citations

Scientific classification

FOS: Engineering and technology > Chemical engineering

CORDIS: Technological sciences > Engineering > Chemical engineering

Associated Projects

PTDC/EQU-ERQ/098730/2008 - Integração de Reactores de Membrana com Processos Adsorptivos usando-se Catalisadores Suportados em Monolitos para a Produção de Hidrogénio de Elevada Pureza

Other information

Authenticus ID: P-00A-D5F

DOI: 10.1016/j.ijhydene.2015.03.106

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.

Language: English

Type (Professor's evaluation): Scientific

Notes: Publicação abrangida pelo Journal Citation Reports 2015

No. of pages: 7