Abstract
Membrane reactors for hydrogen production have been extensively studied in the past years due to the interest in developing systems that are adequate for the decentralized production of high-purity hydrogen. Research in this field has been both experimental and theoretical. The aim of this work is two-fold. On the one hand, modeling work on membrane reactors that has been carried out in the past is presented and discussed, along with the constitutive equations used to describe the different phenomena characterizing the behavior of the system. On the other hand, an attempt is made to shed some light on the meaning and usefulness of models developed with different degrees of complexity. The motivation has been that, given the different ways and degrees in which transport models can be simplified, the process is not always straightforward and, in some cases, leads to conceptual inconsistencies that are not easily identifiable or identified.
Highlights
Membrane reactors (MRs) have received significant attention for their potential use in decentralized hydrogen production systems, allowed by the integrated production and separation of hydrogen [1,2,3]
The kinetic model developed by Peppley et al [95] was based on the following underlying ideas: (i) hydrogen and the oxygen-containing species do not compete for the same catalyst active sites, (ii) the methanol steam reforming and water gas shift reactions take place on different active sites than the methanol decomposition reaction, (iii) the methanol SR and decomposition reactions are limited by the dehydrogenation of adsorbed methoxy groups, and (iv) the rate of the WGS reaction is limited by the formation of an intermediate species
In what follows we focus on a discussion of cases 1 and 2, which are more within the scope of the present work because the presence of a reaction is considered
Summary
Membrane reactors (MRs) have received significant attention for their potential use in decentralized hydrogen production systems, allowed by the integrated production and separation of hydrogen [1,2,3]. Research on MRs has been both experimental and theoretical, with the development of models that could accurately capture the different phenomena taking place in the reactors and affecting their performance. The aim of this work is to present the work that has been carried out in the past years on membrane reactor modeling, and to shed some light on the meaning and significance of developing models with different degrees of complexity. Before we look into these three facets, we briefly consider the phenomena taking place in membrane reactors.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
