Chemically transformed additive phases in Mg2TiO4 and MgTiO3 loaded hydrogen storage system MgH2

被引：35
|
作者：
Pukazhselvan, D. [1 ]
Nasani, Narendar [1 ]
Yang, Tao [1 ]
Ramasamy, Devaraj [1 ]
Shaula, Aliaksandr [1 ]
Fagg, Duncan Paul [1 ]
机构：
[1] Univ Aveiro, Dept Mech Engn, Ctr Mech Technol & Automat TEMA, Nanoengn Res Grp, P-3810193 Aveiro, Portugal
来源：
APPLIED SURFACE SCIENCE | 2019年 / 472卷
关键词：
Ternary oxides; Hydrogen storage; Catalytic activity; METAL-OXIDES; SORPTION KINETICS; MAGNESIUM; XPS; TI; BEHAVIOR; SURFACE; MICROSTRUCTURE; EVOLUTION; MOBILITY;
D O I：
10.1016/j.apsusc.2018.04.052
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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.
引用
收藏
页码：99 / 104
页数：6
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