Effects of blast furnace slag (BFS) and cobalt-boron (Co-B) on hydrogen production from sodium boron hydride

İskenderoğlu, Feride Cansu; Baltacıoğlu, Mustafa Kaan

doi:10.1016/j.ijhydene.2020.12.219

Cited by 10 publications

(6 citation statements)

References 57 publications

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“…Vanadium (V)-based alloys − exhibited a higher reversible hydrogen capacity of about 2.5 wt %, but their large-scale application was limited by the high price of vanadium. Lightweight coordination hydride materials (such as magnesium hydride, − boron hydride, , amino hydride, , and aluminum hydride − ) have theoretical hydrogen storage capacities exceeding 5 wt %. However, there are still many drawbacks with these materials, such as a high dehydrogenation temperature, sluggish kinetics, and poor reversible hydrogen storage performance at ambient temperatures. − …”

Section: Introductionmentioning

confidence: 99%

Ce-Doped TiZrCrMn Alloys for Enhanced Hydrogen Storage

Zhou

et al. 2022

Energy Fuels

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Hydrogen storage is one of the key steps that restricts the large-scale application of hydrogen energy and fuel cells. In this work, we developed an efficient H2 storage material by Ce doping in the TiZrCrMn alloy and systemically studied the effect of Ce on the microstructure, activation, and hydrogen storage properties. The results indicated that Ce addition in the Ti0.8Zr0.2Cr0.75Mn1.25 alloy did not change the major phase structure of Laves C14 but slightly increased the lattice constants and resulted in the formation of a CeO2 phase. It is interesting to find that Ce inhibited the enrichment of the Ti phase, inducing a homogeneous elemental distribution throughout the alloy. Hydrogenation and dehydrogenation tests indicated that the Ce-added alloy exhibited H2 absorption and effective desorption capacities of up to 1.98 and 1.79 wt %, respectively, higher than those of TiZrCrMn alloys reported in the literature. Ce also improved the activation of the alloy at room temperature and enhanced the cyclic performance during the hydrogenation and dehydrogenation. The activation energy, enthalpy change, and entropy change of the alloys upon hydrogenation and dehydrogenation were calculated and a small change was observed after Ce addition.

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Section: Introductionmentioning

confidence: 99%

Ce-Doped TiZrCrMn Alloys for Enhanced Hydrogen Storage

Zhou

et al. 2022

Energy Fuels

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“…As a result, when the amount of Co catalyst sample was increased, the reaction times were shortened, but the high amount of hydrogen production observed in the use of different amounts of catalyst in the literature did not decrease. In the literature studies, it is stated that the reason is due to the maximum saturation of the reaction [23,25]. The reduction in this study is negligible.…”

Section: Manual Performance Experimentsmentioning

confidence: 55%

“…The sealing and the performing experiments were made using Co nanopowder. After then, the Co-BFSs catalyst samples [23], that are synthesized in our previous study, were used in autonomous experiments of this prototype.…”

Section: Resultsmentioning

confidence: 99%

An autonomous hydrogen production system design based on the solid chemical hydride

İskenderoğlu

Baltacıoğlu

Conker

et al. 2022

European Mechanical Science

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This paper develops a hydrogen generator prototype that is for fuel cell systems used in portable applications. This generator is designed based on the use of solid-state hydrides with high hydrogen storage capacity in the catalytic hydrolysis reaction. Some using problems such as unstable hydrogen production, one-off service life, heavy or large-volume storage system, and short duty time can be avoided in moveable applications when the use of the produced prototype. In addition, A simulation model and an autonomous control algorithm, which evaluates the hydrogen generation and temperature responses of the prototype, are developed. The results confirm that the performance of a portable and autonomous prototype with 4 parts and 1-hour hydrogen production capacity is enough for small fuel cell applications.

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“…İskenderoğlu et al examined the catalytic activity of the raw BFS powder in hydrolysis reactions. The hydrogen production of raw BFS catalyst, which is used with 10% NaBH 4 by weight in the reaction at 50 °C, is 54.63 L/ming catalst [19].…”

Section: I)mentioning

confidence: 99%

Comparison of pure-hydrogen production performances of blast furnace slag, and metal powders in sodium borohydride hydrolysis reaction

İskenderoğlu

Baltacıoğlu

2022

European Mechanical Science

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In this study, hydrolysis reaction performances of raw BFS powder and metal powders (which are ingredients of BFS) that are using as a catalyst are compared. Hydrogen generation by hydrolysis reaction of the Al and Fe2O3 Nano & Granule powders with sodium borohydride (NaBH4) addition in water was studied by using different catalysts amount at reaction vessels. The measured values of reaction temperatures and hydrogen flow rates were measured by using high-precision equipment. As a result of the obtained data, it was determined that Fe2O3 and Al catalysts have advantages over hydrogen production rate and fuel conversion, also, these experiments show a very high success in different parameters, and create promising effects in the reactions. Among the Al catalyst samples, the highest efficiency performances are achieved with Al Nano catalyst samples at 85.31 °C preheat with an instantaneous hydrogen generation rate of approximately 11.226 L / min for 33 minutes. Among the Fe2O3 catalyst samples, the highest efficiency performances are achieved with Fe2O3 Nano catalyst samples at 50 °C preheat with an instantaneous hydrogen generation rate of approximately 29.91 L / min for 12 minutes.

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Effects of blast furnace slag (BFS) and cobalt-boron (Co-B) on hydrogen production from sodium boron hydride

Cited by 10 publications

References 57 publications

Ce-Doped TiZrCrMn Alloys for Enhanced Hydrogen Storage

Ce-Doped TiZrCrMn Alloys for Enhanced Hydrogen Storage

An autonomous hydrogen production system design based on the solid chemical hydride

Comparison of pure-hydrogen production performances of blast furnace slag, and metal powders in sodium borohydride hydrolysis reaction

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