Hydrogen generation using a ball-milled Al/Ni/NaCl mixture

Jia, Yanyan; Shen, Jie; Meng, Hao; Dong, Yamin; Chai, Yong‐Ming; Wang, Ning

doi:10.1016/j.jallcom.2013.11.058

Cited by 66 publications

(25 citation statements)

References 22 publications

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“…When the temperature further continued to rise, the plateau disappeared and the hydrogen yield reached approximately 90% within several minutes. Aluminum was rapidly corroded when immersing Al in NaAlO 2 solution (pH = [11][12][13][14]. Eventually, the corrosion became slow.…”

Section: Methodsmentioning

confidence: 99%

“…13 Al or Mg undergoes oxidation, and Ni 2+ or Co 2+ undergoes reduction, and H 2 forms. 14 Al cannot react with water in Al(OH) 3 solution. However, H 2 is rapidly generated and Al is corroded in the presence of excess Al(OH) 3 solid.…”

Section: Introductionmentioning

confidence: 99%

“…Waste Mg completely reacts with water in 1M NiCl 2 solution via first‐order reaction kinetics . Al or Mg undergoes oxidation, and Ni 2+ or Co 2+ undergoes reduction, and H 2 forms . Al cannot react with water in Al(OH) 3 solution.…”

Section: Introductionmentioning

confidence: 99%

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Hydrogen generation by aluminum-water reaction in acidic and alkaline media and its reaction dynamics

et al. 2018

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Summary The additives AlCl3, CoCl2, Al(OH)3, Ca(OH)2, and NaAlO2 are added to water to regulate its pH value (pH = 2‐13) in this study. The effects of media on the aluminum‐water reaction are investigated. Up to an increase in temperature, the hydrogen generation rate in different media increases. H+, OH−, Cl−, or Co produced from the additive favors the initial removal of the oxide film and aluminum corrosion. Therefore, the initial hydrogen generation rate increases in acidic and alkaline media. The synergistic effect of the formed fresh Co and Cl− catalyzes aluminum‐water reactions. However, the amount of hydrogen decreases with increasing mass of CoCl2 because of agglomeration of the catalyst Co. The higher concentration of OH− ions aids hydrogen generation. However, the reaction rate became slow after the rapid consumption of OH−, when the concentration of OH− was relatively small. Hydrogen is quickly generated and Al is completely reacted upon following additions of Al due to the cooperation between H+, Cl−, OH− ions, and the formed Al(OH)3.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Hydrogen generation by aluminum-water reaction in acidic and alkaline media and its reaction dynamics

et al. 2018

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“…Many studies have been carried out to eliminate or to ruin the protective layer to improve the Al reactivity and achieve continuous hydrogen production. One way is to prepare Al alloys with another particular metal such as Ga, Sn, In, Li, and Bi, to obtain higher activities in hydrolysis . But the cost of this method is significantly increased due to the addition of these particular precious metals.…”

Section: Introductionmentioning

confidence: 99%

“…One way is to prepare Al alloys with another particular metal such as Ga, Sn, In, Li, and Bi, to obtain higher activities in hydrolysis. 4,[19][20][21][22][23] But the cost of this method is significantly increased due to the addition of these particular precious metals. Another way is using hydroxide ions (OH − ) in alkaline solutions to etch the Al 2 O 3 surface during the H 2 production.…”

Section: Introductionmentioning

confidence: 99%

Highly efficient hydrolysis of magnetic milled powder from waste aluminum (Al) cans with low‐concentrated alkaline solution for hydrogen generation

et al. 2019

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Summary Currently, recycling waste aluminum materials are of significant importance for reducing environmental pollution and improving economic efficiency. In this paper, aluminum (Al) powder prepared from waste Al cans with magnetic grinding method was directly used in hydrolysis for hydrogen generation. The prepared waste Al cans powder was characterized by scanning electron microscope (SEM), X‐ray diffraction (XRD), Brunauer–Emmett–Teller (BET), atomic absorption spectrophotometer (AAS), and density analysis. The results showed that grinding time, NaOH concentration, and reaction temperature affected the hydrolysis rate and hydrogen yield markedly; 1 g of Al cans powder with grinding time of 40 minutes could produce 1296‐mL hydrogen within 6 minutes under the optimal reaction conditions. The reaction kinetics study demonstrated that the hydrolysis of Al cans powder is kinetically controlled while hydrolysis of Al cans flakes is diffusively controlled. The hydrolysis mechanism was also predicted based on the experimental results and kinetic study. The generation of hydrogen from hydrolysis of waste Al cans powder with low‐concentrated alkaline solution is a promising way to diminish environmental pollution and instrument corrosion.

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Production of High‐Purity Hydrogen and Layered Doubled Hydroxide by Hydrolysis of Mg‐Al Alloys

et al. 2021

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Hydrogen is becoming an important clean energy and layered doubled hydroxide (LDH) is of great interest for many applications, including water treatment, environmental remediation, and chemical catalysis. The production of high‐purity hydrogen and LDH by the hydrolysis of Mg‐Al alloys is reported. The effects of initial pH, reaction temperature, reaction time, and alloy's Mg/Al mass ratio on the rate of hydrogen generation and the purity of LDH are evaluated and the solid hydrolysis products are characterized by different techniques. The initial rate of hydrogen generation increases with decreasing initial pH and increasing reaction temperature and Mg/Al ratio while the purity of LDH increases with Mg/Al ratio, reaction temperature and time. This study may provide a new, green, and sustainable approach for storage of hydrogen and material for water treatment.

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Hydrogen generation using a ball-milled Al/Ni/NaCl mixture

Cited by 66 publications

References 22 publications

Hydrogen generation by aluminum-water reaction in acidic and alkaline media and its reaction dynamics

Hydrogen generation by aluminum-water reaction in acidic and alkaline media and its reaction dynamics

Highly efficient hydrolysis of magnetic milled powder from waste aluminum (Al) cans with low‐concentrated alkaline solution for hydrogen generation

Production of High‐Purity Hydrogen and Layered Doubled Hydroxide by Hydrolysis of Mg‐Al Alloys

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