Observation and Simulation of Hydrogen Storage via Spillover
Hydrogen spillover refers to catalytic dissociation of hydrogen molecules followed by surface diffusion to the catalytic support. This mechanism has been proposed as a means to initiate hydrogen storage at ambient temperature. When catalytic dissociation of hydrogen is used to initiate room temperature hydrogen storage, this initiates weak chemisorption. High variations in experimental uptake, combined with theoretical calculations that are inconsistent with this mechanism, have made this concept controversial. Here, we review hydrogen uptake in porous carbon and metal-organic frameworks (MOFs), with emphasis on spectroscopic evidence of atomic hydrogen bound to the surface and resolution of discrepancies between experimental and theoretical studies. We conclude with a perspective of hydrogen spillover for future material design, hydrogen storage, and fundamental understanding of a process that is crucial for adsorption and catalysis.
C. Wang et al., "Observation and Simulation of Hydrogen Storage via Spillover," Current Opinion in Chemical Engineering, vol. 21, pp. 116-121, Elsevier Ltd, Sep 2018.
The definitive version is available at https://doi.org/10.1016/j.coche.2018.10.005
Chemical and Biochemical Engineering
Keywords and Phrases
Crystalline materials; Dissociation; Organic carbon; Organometallics; Porous materials, Catalytic supports; Hydrogen molecule; Hydrogen spill overs; Material designs; Metalorganic frameworks (MOFs); Spectroscopic evidence; Theoretical calculations; Theoretical study, Hydrogen storage
International Standard Serial Number (ISSN)
Article - Journal
© 2018 Elsevier Ltd, All rights reserved.
01 Sep 2018