An integrated system for ammonia production from renewable hydrogen: A case study

Öztürk, Merve; Dinçer, İbrahim

doi:10.1016/j.ijhydene.2019.12.127

Cited by 70 publications

(25 citation statements)

References 21 publications

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“…In China, nearly 1.8 billion m 3 hydrogen is wasted in industrial chlor-alkali process [21]. Currently, the main applications for hydrogen produced in chlor-alkali electrolyzers include: (1) feedstock gas for the production of ammonia [22]; (2) hydrocracking and other petroleum processing industries [23]; (3) chemical and organic fine chemical synthesis; (4) production of high-purity compressed hydrogen for direct sale (for electronics, metallurgy, glass, and other industries); (5) fuel for steam production; (6) hydrogen fuel cell technology for the construction of hydrogen power plants [24]. Several companies have bottled and marketed hydrogen gas produced in chlor-alkali plants, which is then supplied to fuel cells [25].…”

Section: Hydrogen Energymentioning

confidence: 99%

Revisiting Chlor-Alkali Electrolyzers: from Materials to Devices

Fan

Chuai

et al. 2021

Trans. Tianjin Univ.

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As an energy-intensive industry, the chlor-alkali process has caused numerous environmental issues due to heavy electricity consumption and pollution. Chlor-alkali industry has been upgraded from mercury, diaphragm electrolytic cell, to ion exchange membrane (IEM) electrolytic cells. However, several challenges, such as the selectivity of the anodic reaction, sluggish kinetics of alkaline hydrogen evolution, degradation of membranes, the reasonable design of electrolytic cell structure, remain to be addressed. For these reasons, this paper mainly reviews the research progress of the chlor-alkali industry from materials to devices, including hydrogen evolution anode, chlorine evolution cathode, IEM, and electrolytic cell system. Finally, the research directions and prospects in the chlor-alkali industry are proposed for its further improvement.

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Section: Hydrogen Energymentioning

confidence: 99%

Revisiting Chlor-Alkali Electrolyzers: from Materials to Devices

Fan

Chuai

et al. 2021

Trans. Tianjin Univ.

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“…The aim of this research is to look at the techno-economics of sustainable hydrogen production utilizing wind energy in various windy locations in Pakistan's Sindh province. The levelized cost of wind energy was also estimated to determine the cost of hydrogen output (Bamisile et al 2021b) and (Ozturk and Dincer 2021).…”

Section: Brief Literature Reviewmentioning

confidence: 99%

Assessing The Economic Viability And Fueling Capacity of Renewable Hydrogen: A Way Forward For Green Economic Performance And Policy Measures

Wu¹,

Zhai²,

Mu³

et al. 2021

Preprint

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Energy security and environmental measurements are incomplete without renewable energy therefore there is a dire need to explore new energy sources. Therefore, the aim of this study is to measure the wind power potential to generate the renewable hydrogen including its production and supply cost. We used first order eneginnering model and net present value to measure the levelized cost of wind generated renewable hydrogen by using the data source of Pakistan metorological department and State bank of Paksitan. Results shows that the use of surplus wind and renewable hydoregn energy for green economic production is suggested as an innovative project option for large-scale hydrogen use. The key annual running expenses for hydrogen are electricity and storage cost, which have a major impact on the costs of renwable hydrogen. Also, the results indicates that project has the potential to cut CO2 pollution by 139 million metric tons and raise revenue for wind power plants by 2998.52 million dollars. The renewable electrolyzer plants avoided CO2 at a rate of 24.9–36.9 $/ton under baseload service, relative to 44.3 $/ton for the benchmark. However, in the more practical mid-load situation, these plants have a significant benefit. Further, the wind generated renewable hydrogen deliver a 6–11% larger than annual rate of return than the standard CO2 catch plant due to their capacity to remain running and supply hydrogen to the consumer through periods of plentiful wind and heat. Also, the measured levelized output cost of hydrogen (LCOH) was 6.22$/kgH2 and for the PEC system, it was 8.43 $/kgH2. Finally, its mutually agreed consensus of the environmental scientist that integration of renewable energy is the way forward to increase energy security and environmental performance by ensuring uninterrupted clean and green energy. Further, this application has the potential to address Pakistan’s urgent issues of large-scale surplus wind and solar-generated energy, as well as rising enegry demand.

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“…[5] In addition, given that hydrogen is also a feedstock for a number of important industrial scale chemical processes, such as the production of ammonia and the processing of petro-chemicals, the development of new, low-energy methods of hydrogen generation would also reduce the carbon footprint of these processes. [6,7] Currently around 80 % of the world's hydrogen demand is met through the costly and energy intensive steam methane reforming and water gas shift reactions. [8] Although platinum electrodes are capable of generating hydrogen from the electrolysis of water with little thermodynamic loss, the cost and scarcity of platinum has limited its widespread use.…”

Section: Introductionmentioning

confidence: 99%

“…Hydrogen also possesses a higher energy density per mass when liquified as compared to other transportation fuels, which also makes it appealing for applications in the transportation sector [5] . In addition, given that hydrogen is also a feedstock for a number of important industrial scale chemical processes, such as the production of ammonia and the processing of petrochemicals, the development of new, low‐energy methods of hydrogen generation would also reduce the carbon footprint of these processes [6,7] . Currently around 80 % of the world's hydrogen demand is met through the costly and energy intensive steam methane reforming and water gas shift reactions [8] .…”

Section: Introductionmentioning

confidence: 99%

Structural and Electronic Influences on Rates of Tertpyridine−Amine Co^III−H Formation During Catalytic H₂ Evolution in an Aqueous Environment

et al. 2021

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In this work, the differences in catalytic performance for a series of Co hydrogen evolution catalysts with different pentadentate polypyridyl ligands (L), have been rationalized by examining elementary steps of the catalytic cycle using a combination of electrochemical and transient pulse radiolysis (PR) studies in aqueous solution. Solvolysis of the [Co II À Cl] + species results in the formation of [Co II (k 4 -L)(OH 2 )] 2 + . Further reduction produces [Co I (k 4 -L)(OH 2 )] + , which undergoes a rate-limiting structural rearrangement to [Co I (k 5 -L)] + before being protonated to form [Co III À H] 2 + . The rate of [Co III À H] 2 + formation is similar for all complexes in the series. Using E 1/2 values of various Co species and pK a values of [Co III À H] 2 + estimated from PR experiments, we found that while the protonation of [Co III À H] 2 + is unfavorable, [Co II À H] + reacts with protons to produce H 2 . The catalytic activity for H 2 evolution tracks the hydricity of the [Co II À H] + intermediate.

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An integrated system for ammonia production from renewable hydrogen: A case study

Cited by 70 publications

References 21 publications

Revisiting Chlor-Alkali Electrolyzers: from Materials to Devices

Revisiting Chlor-Alkali Electrolyzers: from Materials to Devices

Assessing The Economic Viability And Fueling Capacity of Renewable Hydrogen: A Way Forward For Green Economic Performance And Policy Measures

Structural and Electronic Influences on Rates of Tertpyridine−Amine Co^III−H Formation During Catalytic H₂ Evolution in an Aqueous Environment

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An integrated system for ammonia production from renewable hydrogen: A case study

Cited by 70 publications

References 21 publications

Revisiting Chlor-Alkali Electrolyzers: from Materials to Devices

Revisiting Chlor-Alkali Electrolyzers: from Materials to Devices

Assessing The Economic Viability And Fueling Capacity of Renewable Hydrogen: A Way Forward For Green Economic Performance And Policy Measures

Structural and Electronic Influences on Rates of Tertpyridine−Amine CoIII−H Formation During Catalytic H2 Evolution in an Aqueous Environment

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Structural and Electronic Influences on Rates of Tertpyridine−Amine Co^III−H Formation During Catalytic H₂ Evolution in an Aqueous Environment