On mechanism of hydrogen generation at oxidation of activated aluminum in aqueous solutions

被引：2
作者：
Sevastyanova, L. G. [1 ]
Klyamkin, S. N. [1 ]
Stupnikov, V. A. [1 ]
Ilyukhina, A. V. [1 ]
Bulychev, B. M. [1 ]
机构：
[1] Lomonosov Moscow State Univ, Dept Chem, Leninskie Gory 1-3, Moscow 119991, Russia
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2024年 / 54卷
关键词：
Hydrogen generation; Aluminum; Bismuth; Ga-in; Mechanical alloys; Salt solutions; AL-BI; HYDROLYSIS; MAGNESIUM; COMPOSITES; ALLOYS; WATER; EVOLUTION; GALLIUM; HYDRIDE; MIXTURE;
D O I：
10.1016/j.ijhydene.2023.07.224
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
To clarify the mechanism of hydrogen generation upon aluminum oxidation by water, the behavior of the mechanical alloys {Al+20%Bi} and {Al+7%Ga+3%In} in various salt solutions has been studied. Analysis of the reaction rate and the overall hydrogen yield in the studied systems allows us to suggest that, unlike the oxidation of magnesium-based materials, the hydrogen generation by activated aluminum is not mainly controlled by electrochemical processes. Additives of activating metals, bismuth and gallium-indium alloys, primarily act as surfactants, making an unoxidized intergranular surface accessible to water according to the Rebinder effect. (c) 2023 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：428 / 436
页数：9
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