Analysis of the hybrid copper oxide–copper sulfate cycle for the thermochemical splitting of water for hydrogen production

Gonzales, Ross B.; Law, Victor J.; Prindle, John C.

doi:10.1016/j.ijhydene.2008.12.026

Cited by 12 publications

(4 citation statements)

References 9 publications

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“…The results shows, that the current density is higher in acid-base environment [8]. While it is lower in neutral media for pH values between 6.4 and 7.4 (Fig.…”

Section: Medium Reaction and Variation Of Electric Currentmentioning

confidence: 82%

“…large-scale hydrogen production without consumption of fossil fuels and other emissions, such as gas COx, SOx and NOx is the key to achieving the hydrogen economy [2][3]. Thermochemical cycles [4][5], electrolysis of water [6][7] and photocatalysis process [8][9] are some of the most important fossil processes for producing hydrogen noncombustible. The prospect of higher returns on a massive production of hydrogen excited particular interest to a higher temperature [10].…”

Section: Introductionmentioning

confidence: 99%

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Optical, electrical properties and OH group adsorption of deposits electrolysis

Slama

Chaouachi

2014

JAC

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An electrochemical method, using electrical energy, decompose water into hydrogen and oxygen, which is more important to pH values varying between the intervals {7.9 - 14} and {2-6 - 5}, a degree of salinity lower than 90 g/L and greater than 130 g/L. While the formed film and the resultant powders were characterized by FTIR, UV- Visible and complex impedance. Thus we see that the electrolysis of water causes a change in the stretching vibrations υOH, namely the presence of Cu-O vibration (solid 520-630 cm-1). A spectral shift in the OH absorption band which is a positive indicator of the interaction of the metal particles dispersed in the electrolyte. Comparison of measurements of the value of pH of the electrolyte showed that acid pH values which increase, which is not the case for basic media and which shows a decrease. A peak of UV-visible absorption at 220 nm was recorded for the solution after production, pH = 8, and two bands at 320 and 360 nm due to hydroxyl compounds that are detected. Furthermore, the complex impedance diagrams show capacitive loops at the high frequency domain, and relaxation process of the electrolyte for different pH values.

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“…The results shows, that the current density is higher in acid-base environment [8]. While it is lower in neutral media for pH values between 6.4 and 7.4 (Fig.…”

Section: Medium Reaction and Variation Of Electric Currentmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Optical, electrical properties and OH group adsorption of deposits electrolysis

Slama

Chaouachi

2014

JAC

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“…Al-Abbasi et al (2017) overviewed the performance characteristics of copper sulfate, revealing that the salt shows a high thermal efficiency, slow reaction kinetics, and the melting during dehydration significantly affects the lifetime over consecutive cycles. The copper sulfate can be also used to produce hydrogen by water splitting using the decomposition reaction after full dehydration of the salt, as reported by Gonzales et al (2009). Although the dehydration reaction is considered in the cycles, this is not the driving force for the hydrogen production (Bhosale et al, 2016).…”

Section: Copper Sulfatementioning

confidence: 99%

Water sorption-based thermochemical storage materials: A review from material candidates to manufacturing routes

Palacios¹,

Navarro²,

Barreneche³

et al. 2022

Front. Therm. Eng.

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A comprehensive and updated review is provided in this article, with a focus on water sorption-based thermochemical storage (WSTCS) materials, covering materials and their manufacturing routes. The state of the art of 22 most relevant salt hydrates is classified into seven groups (bromides, sulphates, carbonates, chlorides, nitrates, hydroxides, and sulphides) and studied as candidates. This is followed by a discussion on TCS material manufacturing, covering both conventional (shaping, pelletizing, etc.) and more advanced routes (e.g., extrusion, 3D printing, encapsulation, etc.). Finally, concluding remarks are presented, including limitations and future potentials for TCS research.

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“…The key to achieving the "hydrogen economy" is taken as the scale of hydrogen without fossil gas consumption and other emissions such as COx, SOx and NOx [3,4] production. The electrolysis of water [5,6], thermochemical cycles [7,8] and photocatalysis process [9,10] are some of the non-fossil fuels the most important processes for producing hydrogen.…”

Section: International Journal Of Chemical and Process Engineering Researchmentioning

confidence: 99%

Process Parametrs Affecting the Hydrogen Production by Water Electrolysis and Electrolyser Characteristic

Romdhane

Bargougui

Chaouachi

2015

International Journal of Chemical and Process Engineering Resea

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The hydrogen production by solar electrolysis depends on the distance between the electrode and the test tube.In fact, the height (h = 3cm) was the best taken as a parameter while relying on the rate of production as a measure of effectiveness. Raising the temperature increases the input electrolyzer voltage, which results in a temperature rise electrolyte to a value of 8.2V at 100 °C. Sunshine is strongly influenced the hydrogen production where changes from one site to another. The effects of the salinity degrees is investigated, which displayed a decrease of the hydrogen flow for the salt masses included between 50 and 130 g/l.Additionally, the current density was higher in acid-base environment, and lower in neutral for pH values around 6.4 and 8.4. Moreover, the hydrogen flow was higher for the electrolyte based margin.

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Analysis of the hybrid copper oxide–copper sulfate cycle for the thermochemical splitting of water for hydrogen production

Cited by 12 publications

References 9 publications

Optical, electrical properties and OH group adsorption of deposits electrolysis

Optical, electrical properties and OH group adsorption of deposits electrolysis

Water sorption-based thermochemical storage materials: A review from material candidates to manufacturing routes

Process Parametrs Affecting the Hydrogen Production by Water Electrolysis and Electrolyser Characteristic

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