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Superior catalytic effect of TiF3 over TiCl3 in improving the hydrogen sorption kinetics of MgH2: Catalytic role of fluorine anion
Ma, L. -P.; Kang, X. -D.; Dai, H. -B.; Liang, Y.; Fang, Z. -Z.; Wang, P-J.; Wang, P.; Cheng, H. -M.
Corresponding AuthorWang, P.(pingwang@imr.ac.cn)
2009-04-01
Source PublicationACTA MATERIALIA
ISSN1359-6454
Volume57Issue:7Pages:2250-2258
AbstractTiF3 shows a superior catalytic effect over TiCl3 in improving the hydrogen sorption kinetics of MgH2. Combined phase analyis and microstructure characterization suggest that both titanium halide additives react with host MgH2 in a similar way. However, systematic X-ray photoelectron spectroscopy studies reveal that the incorporated fluorine (F) differs significantly from its analog chlorine (Cl) in terms or bonding state. The asymmetry of F ls spectra and the sputtering-induced peak shift suggest that, in addition to the Mg F bond, a new Ti F Mg bonding is formed in the TiF3-doped MgH2. In contrast, only one stable binding state of Cl is identified in the form of MgCl2 for the TiCl3-doped MgH2. In combination with the designed experiments, these findings suggest that the generation of active F-containing species may be responsible for the advantage of TiF3 over TiCl3 in improving both the absorption and desorption kinetics of MgH2. Fundamentally. A emphasizes the functionality of F anion in tuning the activity of compound catalyst. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
KeywordHydrogen storage Catalysis X-ray photoelectron spectroscopy Hydrides
Funding OrganizationHundred Talents Project of Chinese Academy of Sciences
DOI10.1016/j.actamat.2009.01.025
Indexed BySCI
Language英语
Funding ProjectHundred Talents Project of Chinese Academy of Sciences
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000264998000020
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:116[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/118090
Collection中国科学院金属研究所
Corresponding AuthorWang, P.
AffiliationChinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Ma, L. -P.,Kang, X. -D.,Dai, H. -B.,et al. Superior catalytic effect of TiF3 over TiCl3 in improving the hydrogen sorption kinetics of MgH2: Catalytic role of fluorine anion[J]. ACTA MATERIALIA,2009,57(7):2250-2258.
APA Ma, L. -P..,Kang, X. -D..,Dai, H. -B..,Liang, Y..,Fang, Z. -Z..,...&Cheng, H. -M..(2009).Superior catalytic effect of TiF3 over TiCl3 in improving the hydrogen sorption kinetics of MgH2: Catalytic role of fluorine anion.ACTA MATERIALIA,57(7),2250-2258.
MLA Ma, L. -P.,et al."Superior catalytic effect of TiF3 over TiCl3 in improving the hydrogen sorption kinetics of MgH2: Catalytic role of fluorine anion".ACTA MATERIALIA 57.7(2009):2250-2258.
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