Publication:
Identifying Zeolite Topologies for Storage and Release of Hydrogen

No Thumbnail Available
Publication date
2018-05-18
Reading date
Event date
Start date of the public exhibition period
End date of the public exhibition period
Advisors
Authors of photography
Person who provides the photography
Journal Title
Journal ISSN
Volume Title
Publisher
American Chemical Society
Export
Research Projects
Organizational Units
Journal Issue
Abstract
We present a molecular simulation study on the most suitable zeolite topologies for hydrogen adsorption and storage. We combine saturation capacities, pore size distributions, preferential adsorption sites and curves of heat of adsorption of hydrogen as function of temperature (we call them HoA-curve) to identify the optimal zeolites for storage and release of hydrogen. Then we analyze the relation between the shape of the HoA-curve and the topology of the materials. We also evaluate the influence of incorporating Feynman-Hibbs effect on the adsorption behavior. We can stablish different shapes on the HoA-curve depending on the uniformity or not of the pores of the zeolites. Parabola-like curves are observed in structures with one or similarly sized pores, while deviations from the parabola are found at low temperature for structures combining large and small pores. The Feynman-Hibbs quantum correction reduces the adsorption capacity of the materials affecting not only the saturation capacity but also the shape of the isotherms. From our results the zeolites studied in this work can be considered potential candidates for the storage and release of hydrogen.
Doctoral program
Related publication
Research projects
CTQ2016-80206-P
P12-FQM-1851
info:eu-repo/grantAgreement/MECD//FPU13%2F00281/ES/FPU13%2F00281/
Description
This work has been supported by the Spanish “Ministerio de Economia y Competitividad” (CTQ2016-80206-P) and by the “Junta de Andalucia” (P12-FQM-1851). JJ.G-S thanks the Research Council of Ghent University for his BOF-postdoctoral fellowship. I.M-M acknowledges the Spanish “Ministerio de Educación Cultura y Deporte” for his predoctoral fellowship (FPU13/00281). TJH.V is grateful to NWO-CW for his VICI grant.
Bibliographic reference
J. Phys. Chem. C 2018, 122, 23, 12485–12493
Photography rights