Premium
Mass Transport in Multilayer Porous Metallic Membranes – Diagnosis, Identification and Validation
Author(s) -
Edreva V.,
Zhang F.,
Mangold M.,
Tsotsas E.
Publication year - 2009
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.200800448
Subject(s) - isobaric process , mass transfer , permeation , membrane , diffusion , porosity , transient (computer programming) , gaseous diffusion , homogeneous , materials science , chemistry , chemical engineering , chromatography , analytical chemistry (journal) , thermodynamics , composite material , physics , engineering , computer science , electrode , biochemistry , operating system
Abstract For a reliable description of mass transfer in membrane reactors the multilayer structure of the membrane is essential. This paper discusses methods which are sufficient to distinguish between homogeneous and composite membranes, and some others which are not. Different mass transport experiments (single gas permeation, isobaric diffusion, transient diffusion) with a porous metallic membrane consisting of two layers and the dusty gas model were used for this purpose. Simultaneous identification of mass transport parameters of both layers was achieved by modern optimization techniques on single gas permeation data. These parameters were validated by isobaric or transient diffusion measurements.