Print Email Facebook Twitter Release of hydrogen from nanoconfined hydrides by application of microwaves Title Release of hydrogen from nanoconfined hydrides by application of microwaves Author Sanz Moral, L.M. (University of Valladolid) Navarrete, Alexander (University of Valladolid) Sturm, G.S.J. (TU Delft Intensified Reaction and Separation Systems) Link, Guido (Karlsruhe Institut für Technologie) Rueda, Miriam (University of Valladolid) Stefanidis, G. (TU Delft Intensified Reaction and Separation Systems; Katholieke Universiteit Leuven) Martín, Ángel (University of Valladolid) Date 2017 Abstract The release of hydrogen from solid hydrides by thermolysis can be improved by nanoconfinement of the hydride in a suitable micro/mesoporous support, but the slow heat transfer by conduction through the support can be a limitation. In this work, a C/SiO2 mesoporous material has been synthesized and employed as matrix for nanoconfinement of hydrides. The matrix showed high surface area and pore volume (386 m2/g and 1.41 cm3/g), which enabled the confinement of high concentrations of hydride. Furthermore, by modification of the proportion between C and SiO2, the dielectric properties of the complex could be modified, making it susceptible to microwave heating. As with this heating method the entire sample is heated simultaneously, the heat transfer resistances associated to conduction were eliminated. To demonstrate this possibility, ethane 1,2-diaminoborane (EDAB) was embedded on the C/SiO2 matrix at concentrations ranging from 11 to 31%wt using a wet impregnation method, and a device appropriate for hydrogen release from this material by application of microwaves was designed with the aid of a numerical simulation. Hydrogen liberation tests by conventional heating and microwaves were compared, showing that by microwave heating hydrogen release can be initiated and stopped in shorter times. Subject AerogelHydrideHydrogen storageMicrowave heatingSupercritical CO To reference this document use: http://resolver.tudelft.nl/uuid:22e8a815-b303-44ee-ae27-dd09a3843a07 DOI https://doi.org/10.1016/j.jpowsour.2017.03.110 Embargo date 2019-04-06 ISSN 0378-7753 Source Journal of Power Sources, 353, 131-137 Part of collection Institutional Repository Document type journal article Rights © 2017 L.M. Sanz Moral, Alexander Navarrete, G.S.J. Sturm, Guido Link, Miriam Rueda, G. Stefanidis, Ángel Martín Files PDF LM_Sanz_Microwave_rev4.pdf 628.65 KB Close viewer /islandora/object/uuid:22e8a815-b303-44ee-ae27-dd09a3843a07/datastream/OBJ/view