Theoretical Studies on a Rotating Film Reactor for Hydrogen Production from Methane

Becker, T.; Agar, David W.

doi:10.1002/cite.202100183

Cited by 4 publications

(1 citation statement)

References 26 publications

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“…In addition to other gaseous products, the two conversion processes yield CH 4 and CO, which can be further processed to yield extra hydrogen through WGS and SR reaction. [ 85 ] Other mechanisms include liquefaction and combustion, which are both less desirable options because they produce little hydrogen and emit byproducts while also needing operating conditions of 5–20 MPa without the presence of air, which are challenging to satisfy. The four distinct thermochemical processes of gasification, pyrolysis, combustion, and liquefaction are the key components of these technologies.…”

Section: Hydrogen Production Technologiesmentioning

confidence: 99%

Recent Advances and Challenges of Hydrogen Production Technologies via Renewable Energy Sources

Worku,

Ayele,

Deepak

et al. 2024

Adv Energy and Sustain Res

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Currently, fossil fuels play a major role in meeting the world's energy demand. Fossil fuels, in contrast, threaten the planet's ecosystems and biological processes, contribute to global warming, and result in unfavorable climatic shifts. These energy sources are also finite and will eventually deplete. Thus, energy transition, which is the key from fossil fuels to renewable energy sources, is regarded as an essential course of action for decarbonizing the global economy and reducing the catastrophic and irreversible effects of climate change. Thereby using/consuming green hydrogen energy is a vital solution to meet the world's challenges. Subsequently, the pros and cons of several hydrogen generation methods, such as the conversion of fossil fuels, biomass, water electrolysis, microbial fermentation, and photocatalysis, are then compared and outlined in terms of their technologies, economies, consumption of energy, environmental aspects, and costs. Currently, the chemical industry uses green hydrogen (H2) primarily to produce green emerging fuels methanol and ammonia (NH3), which are regarded as alternate sources of energy. Finally, the current state of energy demands, recent developments in renewable energy sources, and the potential of hydrogen as a future fuel are outlined. Moreover, the discussion concludes with predicted opportunities and challenges.

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Section: Hydrogen Production Technologiesmentioning

confidence: 99%

Recent Advances and Challenges of Hydrogen Production Technologies via Renewable Energy Sources

Worku,

Ayele,

Deepak

et al. 2024

Adv Energy and Sustain Res

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Hydrogen Production from Methane Thermal Pyrolysis in a Microwave Heating-Assisted Fluidized Bed Reactor

Hussain,

Shabanian,

Latifi

et al. 2024

Energy Fuels

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Methane (CH 4 ) thermal pyrolysis is a promising, carbon dioxide (CO 2 )-free method for hydrogen (H 2 ) production, decomposing CH 4 into H 2 and solid carbon. This highly endothermic and energy-intensive process can sustainably be powered by microwave (MW) heating supported by renewable electricity. In this study, we investigated the efficacy of H 2 production and simultaneous carbon capture through CH 4 thermal pyrolysis in a lab-scale MW heating-assisted fluidized bed reactor (MW-FBR). We identified the effects of the thermal gradient between the solid and gas phases in MW-FBR on the process through direct comparison with a conventional heating-assisted fluidized bed reactor (CH-FBR) under identical operating conditions. Solid dielectric particles in MW-FBR reach high temperatures, creating favorable conditions for CH 4 thermal decomposition. We examined the influences of temperature (900− 1065 °C), mean residence time (0.5−1.5 s), and inlet CH 4 molar fraction (0.2−0.5) on CH 4 conversion and H 2 selectivity. We obtained the highest CH 4 conversion of 23% and H 2 selectivity of up to 98% within the applied experimental conditions. Monitoring pyrolytic carbon byproducts showed that 90% of the produced pyrolytic carbon remained in the bed and captured by the fluidized particles. Comparative analysis between MW-FBR and CH-FBR at the same experimental conditions revealed that MW heating substantially outperformed conventional heating due to MW thermal effect, thermal gradient between solid and gas phases, and hotspots formation. On average, CH 4 conversion increased by 150%. Carbon capture efficiency improved by 70%. In addition, MW heating produced more graphitic carbon.

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Current state and future prospects of liquid metal catalysis

Fatima,

Zuraiqi,

Zavabeti

et al. 2023

Nat Catal

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Theoretical Studies on a Rotating Film Reactor for Hydrogen Production from Methane

Cited by 4 publications

References 26 publications

Recent Advances and Challenges of Hydrogen Production Technologies via Renewable Energy Sources

Recent Advances and Challenges of Hydrogen Production Technologies via Renewable Energy Sources

Hydrogen Production from Methane Thermal Pyrolysis in a Microwave Heating-Assisted Fluidized Bed Reactor

Current state and future prospects of liquid metal catalysis

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