Decline in hydrogen permeation due to concentration polarization and CO hindrance in a palladium membrane reactor

Journal Article · Wed Dec 01 04:00:00 EST 1999 · Industrial and Engineering Chemistry Research

DOI:https://doi.org/10.1021/ie990200n· OSTI ID:20005891

Hara, S; Sakaki, K; Itoh, N

Hydrogen separation from binary gas mixtures, Ar-H{sub 2} and CO-H{sub 2}, using a double-tube type of palladium membrane reactor (PMR) was carried out and analyzed by solving mathematical models taking into account mixing diffusion of hydrogen in the radial direction of the catalyst-packed bed. The experiment showed that carbon monoxide prevented hydrogen permeation through the membrane at temperatures less than 280 C. The decline in hydrogen permeation could be estimated by solving a model describing the concentration polarization and the hindrance by carbon monoxide. Furthermore, the mathematical models were applied to analyze methanol decomposition in the same PMR, showing that a drop in hydrogen permeation due to both the factors had a significant influence on the performance of the PMR.

• Research Organization: National Inst. of Materials and Chemical Research, Tsukuba (JP)
• OSTI ID: 20005891
• Journal Information: Industrial and Engineering Chemistry Research, Journal Name: Industrial and Engineering Chemistry Research Journal Issue: 12 Vol. 38; ISSN IECRED; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
08 HYDROGEN
CARBON MONOXIDE
DECOMPOSITION
HYDROGEN
MATHEMATICAL MODELS
MEMBRANE TRANSPORT
METHANOL
PALLADIUM
PERMEABILITY