Superior catalytic effect of TiF(3) over TiCl(3) in improving the hydrogen sorption kinetics of MgH(2): Catalytic role of fluorine anion
文献类型：期刊论文
| 作者 | L. P. Ma ; X. D. Kang ; H. B. Dai ; Y. Liang ; Z. Z. Fang ; P. J. Wang ; P. Wang ; H. M. Cheng |
| 刊名 | Acta Materialia
 |
| 出版日期 | 2009 |
| 卷号 | 57期号:7页码:2250-2258 |
| 关键词 | Hydrogen storage Catalysis X-ray photoelectron spectroscopy Hydrides storage materials complex hydrides composite nb2o5 performance improvement stability mechanism property naalh4 |
| ISSN号 | 1359-6454 |
| 中文摘要 | TiF(3) shows a superior catalytic effect over TiCl(3) in improving the hydrogen sorption kinetics of MgH(2). Combined phase analyis and microstructure characterization suggest that both titanium halide additives react with host MgH(2) 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 TiF(3)-doped MgH(2). In contrast, only one stable binding state of Cl is identified in the form of MgCl(2) for the TiCl(3)-doped MgH(2). In combination with the designed experiments, these findings suggest that the generation of active F-containing species may be responsible for the advantage of TiF(3) over TiCl(3) in improving both the absorption and desorption kinetics of MgH(2). 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. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32182]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | L. P. Ma,X. D. Kang,H. B. Dai,et al. Superior catalytic effect of TiF(3) over TiCl(3) in improving the hydrogen sorption kinetics of MgH(2): Catalytic role of fluorine anion[J]. Acta Materialia,2009,57(7):2250-2258. |
| APA | L. P. Ma.,X. D. Kang.,H. B. Dai.,Y. Liang.,Z. Z. Fang.,...&H. M. Cheng.(2009).Superior catalytic effect of TiF(3) over TiCl(3) in improving the hydrogen sorption kinetics of MgH(2): Catalytic role of fluorine anion.Acta Materialia,57(7),2250-2258. |
| MLA | L. P. Ma,et al."Superior catalytic effect of TiF(3) over TiCl(3) in improving the hydrogen sorption kinetics of MgH(2): Catalytic role of fluorine anion".Acta Materialia 57.7(2009):2250-2258. |
入库方式： OAI收割
来源：金属研究所
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