Efficient Synthesis of Sodium Borohydride: Balancing Reducing Agents with Intrinsic Hydrogen Source in Hydrated Borax
作者:Zhu, YY (Zhu, Yongyang)[ 1 ] ; Ouyang, LZ (Ouyang, Liuzhang)[ 1,3 ] ; Zhong, H (Zhong, Hao)[ 1 ] ; Liu, JW (Liu, Jiangwen)[ 1 ] ; Wang, H (Wang, Hui)[ 1 ] ; Shao, HY (Shao, Huaiyu)[ 2 ] ; Huang, ZG (Huang, Zhenguo)[ 4 ] ; Zhu, M (Zhu, Min)[ 1 ]
查看 Web of Science ResearcherID 和 ORCID
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷: 8 期: 35 页: 13449-13458
DOI: 10.1021/acssuschemeng.0c04354
出版年: SEP 8 2020
文献类型:Article
摘要
Sodium borohydride (NaBH4) has been identified as one of the most promising hydrogen storage materials; however, it is still challenging to produce NaBH4 with low cost and high efficiency, which are largely determined by the sources of boron and hydrogen and reducing agents used. Herein, we report an economical method to produce NaBH4 by ball milling hydrated borax (Na2B4O7 center dot 10H(2)O and/or Na2B4O7 center dot 5H(2)O) with different reducing agents such as MgH2, Mg, and NaH under ambient conditions. The direct use of natural hydrated borax avoids the dehydration process (at 600 degrees C) and consequently reduces cost and improves overall energy efficiency. A high yield of 93.1% can be achieved for a short ball mill duration (3.5 h) for Na2B4O7 center dot 5H(2)O-NaH-MgH2 system. In this system, H-2 is generated in situ which subsequently reacts with Mg forming MgH2. Low cost Mg is therefore employed to replace the majority of MgH2, leading to an attractive yield of 78.6%. To further reduce the cost of raw materials and improve the utilization of hydrogen source in the hydrated borax, Na2B4O7 center dot 10H(2)O is used to partially substitute for Na2B4O7 center dot 5H(2)O, leading to a complete replacement of MgH2. Compared with literature results, the optimized recipe features low cost and high efficiency since it utilizes hydrogen from the hydrated water in natural borax and avoids high temperatures. Our finding is expected to facilitate applications of NaBH4 for hydrogen storage.
关键词
作者关键词:Sodium borohydride; Borax; Hydrogen storage; Hydrogen; Chemical synthesis; Metal hydrides
KeyWords Plus:MECHANOCHEMICAL REACTION; THERMAL-DECOMPOSITION; STORAGE MATERIALS; NABH4; METABORATE; REGENERATION; DEHYDRATION; MAGNESIUM; SPECTRA; USAGE
作者信息
通讯作者地址:
South China University of Technology South China Univ Technol, Sch Mat Sci & Engn, Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou 510641, Peoples R China.
China Australia Joint Lab Energy & Environm Mat, Key Lab Fuel Cell Technol Guangdong Prov, Guangzhou 510641, Peoples R China.
University of Technology Sydney Univ Technol Sydney, Sch Civil & Environm Engn, Sydney, NSW 2007, Australia.
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, Peoples R China.
通讯作者地址: Ouyang, LZ (通讯作者)
China Australia Joint Lab Energy & Environm Mat, Key Lab Fuel Cell Technol Guangdong Prov, Guangzhou 510641, Peoples R China.
通讯作者地址: Huang, ZG (通讯作者)
显示更多Univ Technol Sydney, Sch Civil & Environm Engn, Sydney, NSW 2007, Australia.
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, Peoples R China
显示更多[ 2 ] Univ Macau, Inst Appl Phys & Mat Engn IAPME, Dept Phys & Chem, Fac Sci & Technol,Joint Key Lab,Minist Educ, Macau, Peoples R China
[ 3 ] China Australia Joint Lab Energy & Environm Mat, Key Lab Fuel Cell Technol Guangdong Prov, Guangzhou 510641, Peoples R China
显示更多[ 4 ] Univ Technol Sydney, Sch Civil & Environm Engn, Sydney, NSW 2007, Australia
电子邮件地址:meouyang@scut.edu.cn; zhenguo.huang@uts.edu.au
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 (NSFC)
NSFC51621001
National Key R&D Program of China
2018YFB1502101
2019YFB1505101
National Natural Science Foundation of China (NSFC)
51771075
National Natural Science Foundation of Guangdong Province
2016A030312011
Australian Research Council
DP170101773
Science and Technology Development Fund, Macau SAR (FDCT)
0062/2018/A2
University of Macau
MYRG2019-00055-IAPME
查看基金资助信息
出版商
AMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
期刊信息
Impact Factor (影响因子): Journal Citation Reports
类别 / 分类
研究方向:Chemistry; Science & Technology - Other Topics; Engineering
Web of Science 类别:Chemistry, Multidisciplinary; Green & Sustainable Science & Technology; Engineering, Chemical