Regulation of high-efficient regeneration of sodium borohydride by magnesium-aluminum alloy

时间:2019-12-29作者:浏览量:187


Regulation of high-efficient regeneration of sodium borohydride by magnesium-aluminum alloy


作者:Qin, CL (Qin, Chenglei)[ 1 ] ; Ouyang, LZ (Ouyang, Liuzhang)[ 1,2 ] ; Wang, H (Wang, Hui)[ 1 ] ; Liu, JW (Liu, Jiangwen)[ 1 ] ; Shao, HY (Shao, Huaiyu)[ 3 ] ; Zhu, M (Zhu, Min)[ 1 ]


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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY


卷: 44  期: 55  页: 29108-29115  特刊: SI

DOI: 10.1016/j.ijhydene.2019.05.010


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

Sodium borohydride (NaBH4) is considered to be an excellent hydrogen-generation material via hydrolysis. However, it remains challenge to regenerate it after hydrolysis in practical applications. Therefore, a low-cost regeneration method from hydrolysis by-products for recycling is the key issue. In this study, NaBH4 was successfully regenerated by direct high-energy ball milling of magnesium alloy (Mg17Al12) and hydrolysis by-product NaBO2 center dot 2H(2)O with addition of a small amount of NaH. Notably, unlike traditional method, here there is no need of adding extra hydrogen and the H- in the regenerated NaBH4 is mainly from the H+ in the coordinated water. It was found that through adding a small amount of NaH, the highest yield may reach 57% after optimizing the regeneration process. In addition, it is the first time we found that not only Mg can participate in the reaction, but also Al; and the addition of NaH can promote the reaction. Furthermore, the regeneration mechanism of NaBH4 was analyzed and the transition pattern [B(OH)(4)](-)/[BH3(OH)](-)/[BH4](-) was successfully observed during the regeneration process. It is worth emphasizing that NaBH4 can be regenerated through ball milling method, which is energy-saving and suitable for up-scaling in the future. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.


关键词

作者关键词:Hydrogen generation; Regeneration; Sodium borohydride (NaBH4)


KeyWords Plus:REVERSIBLE HYDROGEN STORAGE; GENERATION; HYDROLYSIS; NABH4; CATALYST; MGH2


作者信息

通讯作者地址: Ouyang, LZ (通讯作者)


显示更多South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Guangdong, Peoples R China.

通讯作者地址: Shao, HY (通讯作者)

显示更多Univ Macau, Inst Appl Phys & Mat Engn, Macau, Peoples R China.

地址:


显示更多[ 1 ] South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Guangdong, Peoples R China

      [ 2 ] China Australia Joint Lab Energy & Environm Mat, Key Lab Fuel Cell Technol Guangdong Prov, Guangzhou 510641, Guangdong, Peoples R China

显示更多[ 3 ] Univ Macau, Inst Appl Phys & Mat Engn, Macau, Peoples R China

电子邮件地址:meouyang@scut.edu.cn; hshao@um.edu.mo


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


NSFC51621001

National Natural Science Foundation of China


51431001

51771075

Macao Science and Technology Development Fund (FDCT)

118/2016/A3

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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