RT info:eu-repo/semantics/article
T1 Release of Hydrogen from Nanoconfined Hydrides by Application of Microwaves
A1 Sanz Moral, Luis Miguel
A1 Navarrete, Alexander
A1 Sturm, Guido
A1 Link, Guido
A1 Rueda Noriega, Miriam
A1 Stefanidis, Georgios
A1 Martín Martínez, Ángel
AB 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.
PB Elsevier
YR 2017
FD 2017
LK http://uvadoc.uva.es/handle/10324/23372
UL http://uvadoc.uva.es/handle/10324/23372
LA eng
NO Journal of Power Sources 353 (2017) 131e137
DS UVaDOC
RD 19-abr-2024