Journal
APPLIED SURFACE SCIENCE
Volume 472, Issue -, Pages 99-104Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2018.04.052
Keywords
Ternary oxides; Hydrogen storage; Catalytic activity
Categories
Funding
- FCT (Portugal) [SFRH/BPD/88756/2012]
- FCT
- FEDER
- COMPETE [PTDC/CTM-ENE/6319/2014, IF/01344/2014/CP1222/CT0001]
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The present work deals with a comparative study of Mg2TiO4, MgTiO3 and titania additives incorporated MgH2. Hydrogen storage measurements suggest that all these additives improve the hydrogen desorption/absorption performance of MgH2. X-ray diffraction (XRD) and X ray photoelectron spectroscopy (XPS) studies highlight that rock salt phases consisting of highly reduced Ti exist in the samples. These results reiterate that in-situ formation of chemically reduced Ti containing active species is a critical step in the catalysis of TiO2/Mg2TiO4/MgTiO3 additives loaded MgH2. (C) 2018 Elsevier B.V. All rights reserved.
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