Overview of the DOE hydrogen safety, codes and standards program, part 3: Advances in research and development to enhance the scientific basis for hydrogen regulations, codes and standards

Marchi, Chris San; Hecht, Ethan; Ekoto, Isaac; Groth, Katrina M.; LaFleur, Chris Bensdotter; Somerday, Brian P.; Mukundan, Rangachary; Rockward, Tommy; Keller, Jay O.; James, C.W.

doi:10.1016/j.ijhydene.2016.07.014

Cited by 72 publications

(25 citation statements)

References 65 publications

(82 reference statements)

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“…Hydrogen, however, may cause equipment embrittlement. Further, its handling poses safety concerns due to its low ignition energy [2][3][4] and brings high costs for storage [5], which overall decreases its applicability as a combustion fuel. To circumvent these problems, hydrogen gas can be chemically transformed into more dense energy vectors.…”

Section: Introductionmentioning

confidence: 99%

CO2 Methanation over Rh/CeO2 Studied with Infrared Modulation Excitation Spectroscopy and Phase Sensitive Detection

et al. 2020

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Methane is a well-established fuel molecule whose production from CO 2 through methanation garners increasing interest as an energy storage solution. While often produced with Ni based catalysts, other metals are of interest thanks to higher robustness and activity-selectivity numbers. The Rh/CeO 2 catalyst has shown appreciable properties for CO 2 methanation and its structural dynamics has been studied in situ. However, the reaction pathway is unknown. Here, we present infrared modulation excitation spectroscopy measurements with phase sensitive detection of a Rh/CeO 2 catalyst adsorbate composition during H 2 pulsing (0–2 vol.%) to a constant CO 2 (0.5 vol.%) feed. Various carbonyl (CO) and carbonate (b-CO 3 /p-CO 3 ) ad-species clearly respond to the hydrogen stimulus, making them potential reaction intermediates. The different CO ad-species are likely intermediates for product CO and CH 4 but their individual contributions to the respective formations are not unambiguously ascertained. As for the carbonate dynamics, it might be linked to the reduction/oxidation of the CeO 2 surface upon H 2 pulsing. Formate (HCOO) ad-species are clearly visible but appear to be, if not spectators, linked to slow side reactions possibly also affected by CeO 2 redox processes.

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Section: Introductionmentioning

confidence: 99%

CO2 Methanation over Rh/CeO2 Studied with Infrared Modulation Excitation Spectroscopy and Phase Sensitive Detection

et al. 2020

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“…Before replacing bus fleets or converting them into modern ecological buses, all possible pros and cons should be learned and evaluated (when they are implemented). As for electric fuel buses, their main advantages are environmental safety and high efficiency [37]. In the European Union, the Clean Hydrogen in European Cities programme was adopted, which envisages the use of hybrid buses operating on hydrogen fuel for urban transport [38,39].…”

Section: Resultsmentioning

confidence: 99%

“…The main advantage of introducing fuel cells in vehicles is high efficiency. For example, the efficiency of a modern automobile ICE reaches 30 ÷ 35%, and the efficiency of a hydrogen fuel cell is from 45% to 85% [37]. The fuel cells on proton-exchange membrane are usually installed on cars and buses.…”

Section: Fuel Cell Electrobusmentioning

confidence: 99%

Energy saving technologies for urban bus transport

Hnatov¹,

Arhun²,

Ponikarovska³

2017

Int. J. Automot. Mech. Eng.

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Reduction of non-renewable sources of energy and the ecological state of metropolises have become the cause of the search for optimal solutions for introduction of energyefficient and environmentally friendly technologies for urban bus transport, which is the purpose of this work. A review of environmentally friendly buses has shown that electric buses (electrobuses) are the most perspective. However, rapid replacement of all the buses with electrobuses is impossible because of their high cost. A comparative analysis of the operating costs of different types of buses of the same destination and class has been carried out in order to choose the optimal variant. Thus, one route of 4.23 km in length was chosen in Kharkiv (Ukraine). Experimental and calculated data showed that a minibus converted into an electrobus is the most acceptable means for urban passenger transportation. Ultra-capacitors are suggested as an energy source. The conceptual diagram of the model of such a bus is presented and the technical requirements for its components are determined. The data and proposals are useful for Ukraine and for countries with low economic development that cannot quickly replace old diesel buses with new, environmentally friendly, electrobuses. The results of this work are the basis for further research and development.

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“…In addition, the technological infrastructure of the region where hydrogen energy investments will be made is important for the supply and use of hydrogen energy and should be considered when considering investment decisions. On the other hand, Bhogilla et al [43], San Marchi et al [44], and Arat et al [45] have emphasized that for this infrastructure to exist, companies must continue their necessary research and development activities. Specific to this study, different methodologies were considered, such as optimization and survey.…”

Section: Literature On Hydrogen Energy Investmentmentioning

confidence: 99%

Analysis of Strategic Directions in Sustainable Hydrogen Investment Decisions

Yüksel

et al. 2020

Sustainability

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This study seeks to find the appropriate strategies necessary to make sustainable and effective hydrogen energy investments. Within this scope, nine different criteria are defined regarding social, managerial, and financial factors. A hesitant, interval-valued, intuitionistic fuzzy (IVIF) decision-making trial and evaluation laboratory (DEMATEL) methodology is considered to calculate the degree of importance of the criteria. Additionally, impact relation maps are also generated to visualize the causality relationship between the factors. The findings indicate that the technical dimension has the greatest importance in comparison to managerial and financial factors. Furthermore, it is also concluded that storage and logistics, research and development, and technological infrastructure are the most significant factors to be considered when defining hydrogen energy investment strategies. Hence, before investing in hydrogen energy, necessary actions should be taken to minimize the storage and logistic costs. Among them, building the production site close to the usage area will contribute significantly to this purpose. In this way, possible losses during the transportation of hydrogen can be minimized. Moreover, it is essential to identify the lowest-cost hydrogen storage method by carrying out the necessary research and development activities, thereby increasing the sustainability and effectiveness of hydrogen energy investment projects.

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Overview of the DOE hydrogen safety, codes and standards program, part 3: Advances in research and development to enhance the scientific basis for hydrogen regulations, codes and standards

Cited by 72 publications

References 65 publications

CO2 Methanation over Rh/CeO2 Studied with Infrared Modulation Excitation Spectroscopy and Phase Sensitive Detection

CO2 Methanation over Rh/CeO2 Studied with Infrared Modulation Excitation Spectroscopy and Phase Sensitive Detection

Energy saving technologies for urban bus transport

Analysis of Strategic Directions in Sustainable Hydrogen Investment Decisions

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