Computational and experimental investigation on thermodynamics of the reactor of aluminum oxidation in saturated wet steam

Vlaskin, Mikhail S.; Школьников, Е. И.; Lisicyn, A.V.; Bersh, A. V.; Жук, А. З.

doi:10.1016/j.ijhydene.2009.12.061

Cited by 31 publications

(8 citation statements)

References 13 publications

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“…The hydrothermal oxidation of aluminum allows to rich the high reaction rate and complete hydrogen yield [15,16]. However, this method is realized at high temperatures (more than 200 C) and pressures (more than 20 Atm) and requires complex and expensive equipment, preventing its application in mobile device.…”

Section: Introductionmentioning

confidence: 99%

Hydrogen generation from water by means of activated aluminum

Ilyukhina

Ilyukhin

Школьников

2012

International Journal of Hydrogen Energy

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107

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Section: Introductionmentioning

confidence: 99%

Hydrogen generation from water by means of activated aluminum

Ilyukhina

Ilyukhin

Школьников

2012

International Journal of Hydrogen Energy

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107

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“…As the initial material for the SLM process, hollow alumina has unacceptable characteristics (see Figure 1). Oxidation of aluminum powder in water is one of the possible solutions [26,27]. The aluminum particle oxidation process can be stopped at any oxidation degree by reagent separation (water and aluminum) at a certain time.…”

Section: Introductionmentioning

confidence: 99%

Aluminum-Alumina Composites: Part I: Obtaining and Characterization of Powders

et al. 2019

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The process of advanced aluminum-alumina powders production for selective laser melting was studied. The economically effective method of obtaining aluminum-alumina powdery composites for further selective laser melting was comprehensively studied. The aluminum powders with 10–20 wt. % alumina content were obtained by oxidation of aluminum in water. Aluminum oxidation was carried out at ≤200 °C. The oxidized powders were further dried at 120 °C and calcined at 600 °C. Four oxidation modes with different process temperatures (120–200 °C) and pressures (0.15–1.80 MPa) were investigated. Parameters of aluminum powders oxidation to obtain composites with 10.0, 14.5, 17.4, and 20.0 wt. % alumina have been determined. The alumina content, particle morphology, and particle size distribution for the obtained aluminum-alumina powdery composites were studied by XRD, SEM, laser diffraction, and volumetric methods. According to the obtained characteristics of aluminum-alumina powdery composites, they are suitable for the SLM process.

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“…Aluminum (Al) is an active metal, which is the most abundant crustal metal on the earth. When the temperature is below 200°C, the reaction of Al and water (H 2 O) occurs as follows [3].…”

Section: Introductionmentioning

confidence: 99%

“…[4], Al 2 O 3 can be obtained by calcining AlO(OH). In addition, the peaks of Al-H 2 O with 5 wt% NaCl addition contain NaCl besides Al, Al(OH)3 and AlO(OH). This shows that NaCl does not involve in the reaction of Al-H 2 O.…”

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confidence: 99%

Effects of additives on the hydrogen generation of Al-H₂ O reaction at low temperature

Sun

Zhu

et al. 2017

Int J Energy Res

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Summary Water displacement method is used to study the influence of temperatures (60–80°C), additives (Na2CO3, NaCl, Na2CO3/NaCl) and concentrations on the reaction characteristics and kinetics of Al–H2O. Results show that the reaction rate and the hydrogen yield are enhanced with the increase of the temperature or by adding Na2CO3. The reaction rate is decreased by adding NaCl, but which has less effect on the hydrogen yield. For the mixture additive, Na2CO3 plays a key role in improving the hydrogen yield and the reaction rate. The influence degree of different factors is analyzed by orthogonal method. The most obvious factor is additive, but additive concentration has a minimum influence. The solid products are collected and analyzed by X‐ray diffraction and transmission electron microscopy. Al, Al(OH)3 and AlO(OH) are detected. The spherical particles are obviously found at the initial reaction stage. However, they change to flocs at the end of reaction. Kinetic analysis shows that the reaction mechanism of Al–H2O is changed by adding Na2CO3 or mixture, but it is not affected by adding NaCl. Moreover, the apparent activation energy of Al–H2O is 74.49 kJ mol−1, while it is only 43.03 kJ mol−1 for Al–H2O with 5 wt% Na2CO3 addition. Copyright © 2017 John Wiley & Sons, Ltd.

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Computational and experimental investigation on thermodynamics of the reactor of aluminum oxidation in saturated wet steam

Cited by 31 publications

References 13 publications

Hydrogen generation from water by means of activated aluminum

Hydrogen generation from water by means of activated aluminum

Aluminum-Alumina Composites: Part I: Obtaining and Characterization of Powders

Effects of additives on the hydrogen generation of Al-H₂ O reaction at low temperature

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Computational and experimental investigation on thermodynamics of the reactor of aluminum oxidation in saturated wet steam

Cited by 31 publications

References 13 publications

Hydrogen generation from water by means of activated aluminum

Hydrogen generation from water by means of activated aluminum

Aluminum-Alumina Composites: Part I: Obtaining and Characterization of Powders

Effects of additives on the hydrogen generation of Al-H2 O reaction at low temperature

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Product

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Effects of additives on the hydrogen generation of Al-H₂ O reaction at low temperature