Promoting hydrogen generation via co-hydrolysis of Al and MgH2 catalyzed by Mo and B2O3
作者
Naseem, K (Naseem, Kashif) 1, 2
Zhong, H (Zhong, Hao) 1, 2
Wang, H (Wang, Hui) 1, 2
Ouyang, LZ (Ouyang, Liuzhang) 1, 2, 3
Zhu, M (Zhu, Min) 1, 2
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卷888
文献号161485
DOI10.1016/j.jallcom.2021.161485
出版时间DEC 25 2021
文献类型Article
摘要
The hydrolysis of MgH2 and Al can generate a large amount of hydrogen, but is hindered by its poor kinetics. The generated compact by-product layer is regarded as the main reason for this deficiency. In this work, a comparatively cost efficient Al12Mg17 alloy is fully hydrogenated to generate a mixture of MgH2 and Al. The mixtures are then refined effectively via ball milling with Mo (1.5 wt%) and B2O3 (3.5 wt%) as grinding agents. After 2 h of milling, the MgH2 and Al mixture with the grinding agents shows excellent hydrolysis properties, with the generation of 1420.2 mL/g in 50 min at room temperature in a 1 M AlCl3 solution and a reduction in the activation energy to 9.4 kJ/mol. The effective refinement of Al and MgH2, the generation of H3BO3 from B2O3 hydrolysis and the formation of an incompact MgAl2O4 by-product contribute to the kinetic properties in the hydrolysis of MgH2 and Al. (C) 2021 Elsevier B.V. All rights reserved.
关键词
作者关键词Al and MgH2 mixtureCo-hydrolysisHydrogen generation
Keywords PlusPERFORMANCEALUMINUMCOMPOSITESKINETICSSTORAGEMETALSCARBONALLOY
作者信息
通讯作者地址
Zhong, Hao;Ouyang, Liuzhang
(通讯作者)
South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China
通讯作者地址
Zhong, Hao;Ouyang, Liuzhang
(通讯作者)
South China Univ Technol, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Peoples R China
通讯作者地址
Ouyang, Liuzhang
(通讯作者)
China Australia Joint Lab Energy & Environm Mat, Key Lab Fuel Cell Technol Guangdong Prov, Guangzhou 510641, Peoples R China
地址
1 South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Peoples R China
2 South China Univ Technol, Key Lab Adv Energy Storage Mat Guangdong Prov, Guangzhou 510641, Peoples R China
3 China Australia Joint Lab Energy & Environm Mat, Key Lab Fuel Cell Technol Guangdong Prov, Guangzhou 510641, Peoples R China
电子邮件地址zhonghao@scut.edu.cnmeouyang@scut.edu.cn
类别/分类
研究方向ChemistryMaterials ScienceMetallurgy & Metallurgical Engineering