Excellent catalysis of MoO3 on the hydrogen sorption of MgH2

时间:2019-12-29作者:浏览量:351


Excellent catalysis of MoO3 on the hydrogen sorption of MgH2


作者:Dan, L (Dan, Liang)[ 1,2 ] ; Hu, L (Hu, Long)[ 1,2 ] ; Wang, H (Wang, Hui)[ 1,2 ] ; Zhu, M (Zhu, Min)[ 1,2 ]


INTERNATIONAL JOURNAL OF HYDROGEN ENERGY


卷: 44  期: 55  页: 29249-29254  特刊: SI

DOI: 10.1016/j.ijhydene.2019.01.285


出版年: NOV 8 2019


文献类型:Article; Proceedings Paper


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会议名称

会议: 16th International Symposium on Metal-Hydrogen Systems (MH)


会议地点: Guangzhou, PEOPLES R CHINA


会议日期: OCT 28-NOV 02, 2018


摘要

To improve the hydrogen sorption kinetics of MgH2, the MoO3 nanobelts were added into MgH2 by mechanical milling, leading to fine distribution of MoO3 in the MgH2 matrix. Compared to uncatalyzed MgH2, the hydriding and dehydriding rates of MoO3-catalyzed MgH2 were significantly improved. The MgH2 doped with 2 mol% MoO3 exhibited fast dehydrogenation without activation, and the initial dehydrogenation amount of 5 wt% could be reached within 900 s at 300 degrees C. The dehydrogenation apparent activation energy is decreased down to 114.7 kJ/mol. The excellent catalytic effect of MoO3 originates from its specific role as fast hydrogen diffusion pathways. In the hydrogenation process, the MoO3 transformed to MoO2, resulting in the fading of catalytic activity. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.


关键词

作者关键词:Hydrogen storage materials; MgH2; MoO3; Catalysis


KeyWords Plus:STORAGE PROPERTIES; DEHYDROGENATION PROPERTIES; AT-C; ABSORPTION; CARBON; IMPROVEMENT; ENHANCEMENT; COMPOSITES; DESORPTION; KINETICS


作者信息

通讯作者地址: Wang, H (通讯作者)


显示更多South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China.

地址:


显示更多[ 1 ] South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510640, Guangdong, Peoples R China

显示更多[ 2 ] South China Univ Technol, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510640, Guangdong, Peoples R China

电子邮件地址:mehwang@scut.edu.cn


基金资助致谢

基金资助机构显示详情授权号

National Natural Science Foundation of China


51471070

U1601212

51431001

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出版商

PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND


期刊信息

Impact Factor (影响因子): Journal Citation Reports

类别 / 分类

研究方向:Chemistry; Electrochemistry; Energy & Fuels


Web of Science 类别:Chemistry, Physical; Electrochemistry; Energy & Fuels