Analysis of hydrogen production costs in Steam-Methane Reforming considering integration with electrolysis and CO2 capture

Katebah, Mary; Al-Rawashdeh, Ma’moun; Linke, Patrick

doi:10.1016/j.clet.2022.100552

Cited by 69 publications

(22 citation statements)

References 30 publications

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“…In this work, we consider various feed gas conditions, which have different CO 2 compositions and pressures (15 mol %, 22.5 bar; 22 mol %, 22.5 bar; 37 mol %, 29.6 bar; 60 mol %, 29.6 bar) representing a broad range of possible gas conditions from power generation or SMR plants, ,, as shown in Table . H 2 and CH 4 are considered inert as their solubilities in ILs are remarkably lower than that of CO 2 , Additionally, three different carbon capture rates (90, 95, and 99%) are taken into account.…”

Section: Results and Discussionmentioning

confidence: 99%

“…Preemptive capture aims to remove CO 2 from shifted syngas streams such as those that arise in the operation of power plants using municipal waste 37 or integrated gasification combined cycle (IGCC) configurations, 38,39 as well as from high-pressure CO 2 streams in processes such as steam methane reforming (SMR) for hydrogen production. 40 We utilize preemptive capture of CO 2 to exemplify carbon capture processes, noting that the configuration and operation of postcombustion, atmosphericpressure systems are fundamentally similar (Figure 1). For preemptive capture, the gas stream (comprising mostly hydrogen and carbon dioxide) contains 15−60% CO 2 depending on the source application.…”

Section: Sourcesmentioning

confidence: 99%

“…This differs from postcombustion carbon capture, which involves capturing CO 2 from flue gases at atmospheric pressure. Preemptive capture aims to remove CO 2 from shifted syngas streams such as those that arise in the operation of power plants using municipal waste or integrated gasification combined cycle (IGCC) configurations, , as well as from high-pressure CO 2 streams in processes such as steam methane reforming (SMR) for hydrogen production . We utilize preemptive capture of CO 2 to exemplify carbon capture processes, noting that the configuration and operation of postcombustion, atmospheric-pressure systems are fundamentally similar (Figure ).…”

Section: Solvent-based Co2 Capture From Point Sourcesmentioning

confidence: 99%

See 2 more Smart Citations

Multiscale Design of Ionic Liquid Solvents and CO₂ Capture Processes for High-Pressure Point Sources

Seo,

Brennecke,

Edgar

et al. 2023

ACS Sustainable Chem. Eng.

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We introduce a multiscale modeling and an optimization framework for the simultaneous, integrated process and a molecular design of carbon capture systems from point sources. We use ionic liquid-based solvents, which have been proposed as environmentally benign and effective solvents for carbon capture. The thermophysical properties of the capture solvent are described by using perturbed-chain statistical associating fluid theory with a set of continuous molecular descriptors. At the macroscopic level, detailed and rigorous correlations are used for characterizing mass and heat transfer. The optimization of the resulting multiscale flowsheet model aims to minimize the total capture cost. An extensive case study considers a broad repertoire of point-source carbon capture scenarios (in terms of source characteristics and capture rate), proving the superiority of simultaneously and holistically designing the process and the solvent relative to existing results that rely on a single, fixed solvent.

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Section: Results and Discussionmentioning

confidence: 99%

Section: Sourcesmentioning

confidence: 99%

Section: Solvent-based Co2 Capture From Point Sourcesmentioning

confidence: 99%

See 1 more Smart Citation

Multiscale Design of Ionic Liquid Solvents and CO₂ Capture Processes for High-Pressure Point Sources

Seo,

Brennecke,

Edgar

et al. 2023

ACS Sustainable Chem. Eng.

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“…Hydrogen can be produced by employing various techniques among which steam reforming of natural gas accounts for almost 50% of the share of total hydrogen productions. 314 The process involves heating of methane along with steam in the presence of a catalyst, which results in production of hydrogen and carbon monoxide as the major components and a relatively small amount of carbon dioxide. The process is then followed by a water-gas shift reaction involving the catalytic conversion of carbon monoxide and steam to produce more hydrogen and carbon dioxide.…”

Section: Hydrogen Production and Purificationmentioning

confidence: 99%

Advances in surface modification and functionalization for tailoring the characteristics of thin films and membranes via chemical vapor deposition techniques

Mostafavi

Mishra

Gallucci

et al. 2023

J of Applied Polymer Sci

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Advanced materials are among the prime drivers for technological revolutions and transformation in quality of lives. Over time, several modification techniques have emerged enabling development of novel materials with extraordinary features. The present review aims to introduce various promising chemical and physical surface modification techniques instrumental for tailoring the characteristics of thin films and membranes. Meticulous discussions are provided over chemical vapor deposition (CVD) techniques evolved for addressing the demands for materials with desired functionalities. Also, essential criteria for the selection of substrates, modifying and precursor materials for an effective CVD modification are elaborated. Investigations are extended to unraveling the role of various process parameters on the quality and properties of deposition. Special attention is paid to the significance and performance of CVD‐based membranes and thin films for industrial applications ranging from desalination and water treatment to energy and environment, biomedical and life science as well as packaging. The goal has been to establish a scientific platform for a timely tracking of the prevailing trends in exploitation of CVD techniques and highlighting the unexplored opportunities. This also helps in identification of the scientific and technical gaps and setting directions for further progress in the fields of thin films and membranes.

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“…In addition to the harsh conditions required to break the NN bond, H 2 gas needs to be produced and purified in the first place. H 2 production via the steam reforming process is energy intensive and has a high carbon footprint, averaging 7.5–12 tons of CO 2 emitted per one ton of H 2 produced . To address the shortcomings of thermal N 2 reduction, a promising alternative strategy to convert nitrate into ammonia and other value-added products through electrochemical reduction was developed. − This electrocatalytic nitrate decomposition and removal process can proceed under ambient conditions (N–O BDE: 204 kJ mol –1 ) and bypass the energy-intensive N 2 breaking step in N 2 reduction (941 kJ mol –1 ). − …”

Section: Introductionmentioning

confidence: 99%

Synergy between Cu and Co in a Layered Double Hydroxide Enables Close to 100% Nitrate-to-Ammonia Selectivity

Wang,

Chen,

Tse

2023

J. Am. Chem. Soc.

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Nitrate electroreduction (NO 3 RR) holds promise as an energy-efficient strategy for the removal of toxic nitrate to restore the natural nitrogen cycle and mitigate the adverse impacts caused by overfertilization from suboptimal agricultural practices. However, existing catalysts suffer from limited electrocatalytic activity, poor selectivity, inadequate durability, and low scalability. To address this quadrilemma, in this study, we developed a cost-effective layered double hydroxide (LDH) electrocatalyst with a lamellar structure that presents trimetallic CuCoAl active sites on the nanomaterial surface. This codoping design enabled electrochemical upcycling of nitrate into ammonia exclusively and efficiently with an onset potential at 0 V vs RHE, where the electrocatalytic process is less energy intensive and has a lower carbon footprint than conventional practices. The synergistic interaction among Cu, Co, and Al further afforded a 99.5% Faradic efficiency (FE) and a yield rate of 0.22 mol h −1 g −1 for nitrate-to-ammonia electroreduction, surpassing the performance of state-of-the-art nonprecious metal NO 3 RR electrocatalysts over an extended operation period. To gain insights into the origin of the catalytic performance observed on LDH, control materials were employed to elucidate the roles of Cu and Co. Cu was found to improve the NO 3 RR onset potential despite displaying limited FE for ammonia synthesis, while Co was discovered to suppress the formation of nitrite byproduct though requiring large overpotential. Simulated wastewater containing phosphate and sulfate, which are typically present in industrial effluents, was used to further investigate the effect of electrolytes on NO 3 RR. Intriguingly, the use of phosphate buffer resulted in a superior yield rate and FE for ammonia production while simultaneously inhibiting nitrite byproduct formation compared with the sulfate case. These experimental findings were supported by density functional theory (DFT) calculations, which explored the adsorption strength of nitrate adducts adjacent to coadsorbed electrolytes on the LDH surface. Additionally, the relative free energies of NO 3 RR species were also computed to examine the proton-coupled electron transfer (PCET) mechanism on CuCoAl LDH, shedding light on the potential-dependent step (PDS) and the exclusive selectivity for nitrate-to-ammonia conversion. The CuCoAl LDH developed here offers scalability by eliminating the need for precious metals, rendering this earth-abundant catalyst particularly appealing for sustainable nitrate electrovalorization technology.

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Analysis of hydrogen production costs in Steam-Methane Reforming considering integration with electrolysis and CO2 capture

Cited by 69 publications

References 30 publications

Multiscale Design of Ionic Liquid Solvents and CO₂ Capture Processes for High-Pressure Point Sources

Multiscale Design of Ionic Liquid Solvents and CO₂ Capture Processes for High-Pressure Point Sources

Advances in surface modification and functionalization for tailoring the characteristics of thin films and membranes via chemical vapor deposition techniques

Synergy between Cu and Co in a Layered Double Hydroxide Enables Close to 100% Nitrate-to-Ammonia Selectivity

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Analysis of hydrogen production costs in Steam-Methane Reforming considering integration with electrolysis and CO2 capture

Cited by 69 publications

References 30 publications

Multiscale Design of Ionic Liquid Solvents and CO2 Capture Processes for High-Pressure Point Sources

Multiscale Design of Ionic Liquid Solvents and CO2 Capture Processes for High-Pressure Point Sources

Advances in surface modification and functionalization for tailoring the characteristics of thin films and membranes via chemical vapor deposition techniques

Synergy between Cu and Co in a Layered Double Hydroxide Enables Close to 100% Nitrate-to-Ammonia Selectivity

Contact Info

Product

Resources

About

Multiscale Design of Ionic Liquid Solvents and CO₂ Capture Processes for High-Pressure Point Sources

Multiscale Design of Ionic Liquid Solvents and CO₂ Capture Processes for High-Pressure Point Sources