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118 articles for “hydrogen”
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Analysis of Vapour-Liquid Equilibrium Behaviour of Cryogenic Hydrogen-Deuterium Mixtures Using Cubic Equation of State-based Method
Abstract: A comparative analysis of the vapour liquid equilibrium behaviour of the cryogenic hydrogen-deuterium system calculated under the assumption of an ideal solution using pure component vapour pressure data versus that of a real solution using Peng-Robinson cubic equation of state has been presented in this work. It is found that assumption of ideal solution leads to over prediction of the relative volatilities by 14% to 57% depending on the mixture …
Published in International Journal of Chemical Separation Technology · Vol. 4, Issue 2, 2018 · pp. 1–13 Read article
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Hydrogen as a Fuel for IC Engines: Challenges, Opportunities, and Future Prospects
Abstract: Abstract The growing global concern over climate change and the ongoing depletion of fossil fuels hassignificantly accelerated the search for alternative fuels in the transportation and power generation sectors. As the world strives for cleaner, more sustainable energy sources, hydrogen has emerged as one of the most promising options, particularly for its application in internal combustion (IC) engines. With its potential to drastically reduce harmful emissions and provide an alternative …
Published in International Journal of I.C. Engines and Gas Turbines · Vol. 10, Issue 2, 2024 · pp. 16–21 Read article
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Quantitative Consequence Analysis of Selected Accident Scenarios at a Refuelling Station for Hydrogen Vehicles
Abstract: AbstractThe implementation of hydrogen economy and energy systems in any nation will require introduction of a large number of hydrogen refueling stations for hydrogen based automobiles. These will be expected to store a significant inventory of hydrogen on site, either as a compressed gas with pressure of about 750 bar or as a cryogenic liquid at 20 K. Not only does the handling of compressed gases and cryogenic liquids present …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 5, Issue 2, 2019 · pp. 58–81 Read article
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Cost Analysis and Optimization of a Nuclear Assisted Electrolytic Hydrogen Production and Distribution Network in India
Abstract: Hydrogen production by alkaline water electrolysis and its distribution via gas pipelines using nuclear electricity as the energy source is a possible scheme that may help facilitate the adoption and implementation of hydrogen energy systems on a large scale. This work provides a techno-economic assessment of a water cooled nuclear reactor based electrolytic hydrogen production and distribution infrastructure in a developing nation like India. The optimal conditions for electrolysis at …
Published in International Journal of Chemical Engineering and Processing · Vol. 5, Issue 2, 2019 · pp. 23–43 Read article
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Statistical analysis of embodied carbon emissions intensity of hydrogen produced in India by grid connected water electrolysers
Abstract: Electrolytic hydrogen produced through alkaline water or proton exchange membrane electrolysers using clean electricity sources has the potential to contribute to industrial decarbonization by displacing fossil fuels like natural gas, as a low carbon feed material or energy carrier. To have favourable economics of hydrogen production, it is necessary to operate electrolysers continually to make the best use of the installed capacity and associated capital investment. This can be ensured …
Published in International Journal of Green Chemistry · Vol. 12, Issue 1, 2026 · pp. 10–19 Read article
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Sustainable Hydrogen Solutions: Beryllium-Based Complexes and Catalysts for Efficient Energy Storage and Production
Abstract: This study explores the potential of beryllium (Be) and transition metal (TM) complexes in hydrogen storage and production, focusing on the hybridization of atomic orbitals to form dihydrogen complexes within nanostructured materials. We analyze the binding energies and adsorption characteristics of H₂ molecules in Be-dihydrogen complexes and compare them with TM-dihydrogen complexes. The findings indicate that Be can effectively bind H₂ at room temperature, making it a promising candidate for …
Published in International Journal of Energetic Materials · Vol. 10, Issue 2, 2024 · pp. 1–5 Read article
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Hydrogenation of dimethyl-nitrobenzene to dimethyl-aniline in a three-phase Reactor
Abstract: The liquid-phase catalytic hydrogenation of dimethyl-nitrobenzene (DN) to Dimethyl-aniline (DA) was carried out in ethanol using 5% Pd/C as a catalyst. The effects of hydrogen partial pressure (400–1000 kPa), reaction temperature (343–403 ), catalyst loading (5–15 g/lit), speed of stirring range (200-800 rpm) and dimethyl-nitrobenzene concentration (0.12–0.75 mol/lit) on the hydrogenation of dimethyl-nitrobenzene and the yield of Dimethyl-aniline have been studied. Dimethyl-aniline was the only reaction product, generated through the …
Published in International Journal of Chemical Separation Technology · Vol. 3, Issue 2, 2017 · pp. 1–13 Read article
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Parametric Analysis and Optimization of Nuclear Assisted Electrolytic Hydrogen Production System for On-site Applications
Abstract: The use of compact water electrolyser units as an alternative source of hydrogen to the high pressure hydrogen cylinder banks used at present in nuclear and thermal power reactors for turbo-generator rotor cooling applications has been analysed in this work. Financial metrics have been used for assessment of the technology substitution in the nuclear industry in India, primarily by comparing the levelised costs of onsite hydrogen generation in small generators …
Published in International Journal of Chemical Engineering and Processing · Vol. 6, Issue 1, 2020 · pp. 14–26 Read article
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Essence of Physicochemical Model of the Formation of Negatively Charged Microdispersed Hydrogen Bubbles in the Process of Electrolysis of Water Solutions
Abstract: Electrolytic hydrogen bubbles, formed during the electrolysis of water solutions, have two unique properties: microdispersion and negative charge of their surface, which allow them as a result of an elementary act of flotation to form strong complexes: negatively charged micro dispersed hydrogen bubbles-microscopic solid particle, biological cell, whose floatation to the free surface of water solution due to their increased volume compared to individual components ensures the successful completion of …
Published in International Journal of Chemical Engineering and Processing · Vol. 8, Issue 1, 2022 · pp. 30–42 Read article
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A Survey on Hydrogen Storage System using Alloys
Abstract: The transition to a carbon-neutral energy landscape hinges on the ability to store hydrogen safely, densely, and reversibly. While high-pressure tanks and cryogenic vessels dominate today’s infrastructure, solid-state storage in metallic alloys offers a compelling alternative by marrying high gravimetric capacity with intrinsic safety. This work presents a systematic investigation of a family of reversible hydrogen-absorbing alloys—principally Mg-based intermetallics (Mg₂Ni, Mg-Fe-Mn) and Ti-V-based Laves phases (TiFe, Ti₁₋ₓMnₓV₂) – engineered through …
Published in International Journal of Energetic Materials · Vol. 12, Issue 1, 2026 · pp. 13–19 Read article
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An overview of current activities in commercial deployment of hydrogen energy projects around the world
Abstract: Hydrogen energy systems have been proposed as one of the major components of a decarbonized, clean and sustainable energy system of the future, which will also include renewables, nuclear energy and biomass energy forms. Hydrogen production, storage, distribution and re-conversion technologies are essential components of this value chain. This study looks at some commercial level technologies available and projects deployed round the world for ushering in hydrogen energy systems on …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 6, Issue 2, 2020 · pp. 16–25 Read article
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Nanoscale Metal Oxide Improvement for Photoelectrochemical Water Splitting and Hydrogen Generation
Abstract: The global pursuit of clean and renewable energy has spotlighted hydrogen as a sustainable fuel, particularly when generated through environmentally friendly methods. Among these, photoelectrochemical (PEC) water splitting stands out as a direct and solar-powered approach to hydrogen (H₂) production. Unlike conventional techniques that rely heavily on fossil fuels, PEC systems utilize semiconductor materials to absorb sunlight and catalyze the splitting of water into hydrogen and oxygen, without releasing harmful …
Published in International Journal of Applied Nanotechnology · Vol. 11, Issue 2, 2025 Read article
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Catalytic hydrogenation of dimethyl-nitrobenzene to dimethyl-aniline over Ni catalysts
Abstract: The catalytic transfer hydrogenation of dimethyl-nitrobenzene (DN) to Dimethyl-aniline (DA) was studied in the temperature range 343–403 , pressure range of 4–10 bar H2 and ethanol as solvent using Ni on alumina-silicate as catalyst above agitation speed 800 rpm. The substrate feed concentration was varied in the range from 0.124 to 0.745 kmol/m3 while catalyst loading was in the range 4–12% (w/w) of dimethyl-nitrobenzene. Dimethyl-aniline was the only reaction product, …
Published in International Journal of Chemical Engineering and Processing · Vol. 3, Issue 2, 2017 · pp. 19–29 Read article
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Comparative analysis of low and high pressure water electrolysis using nuclear waste heat for sustainable hydrogen production in India
Abstract: Hydrogen has been proposed as a clean and sustainable vector of the decarbonized energy system of the near future. Generation of hydrogen gas from a relatively easily available resource like water through low temperature water electrolysis is a simple, technologically mature alternative for realizing the vision of hydrogen economy. This work examines the techno-economic feasibility aspects of a water electrolysis based hydrogen production plant when coupled with typical nuclear power …
Published in International Journal of Chemical Engineering and Processing · Vol. 4, Issue 1, 2018 · pp. 1–20 Read article
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Hydrogen Peroxide Decomposition to Water: A Review Process
Abstract: The term "thermal" refers to the presence of heat. Breaking down is the action of decomposing. If a materials temperature is raised, it goes through a chemical process called thermal breakdown. At high temperatures, thermal breakdown processes occur. Before breaking into the products, the reactants absorb a lot of energy. The reactant is the beginning chemical. It decomposes to simpler entities, that might be either elements or compounds. Hydrogen peroxide …
Published in International Journal of Energetic Materials · Vol. 8, Issue 1, 2022 · pp. 17–20 Read article
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Revolutionizing Steel Production: A Pathway to Low-Carbon Direct Reduction Iron (DRI)
Abstract: The steel industry, a cornerstone of modern infrastructure, is a significant contributor to global CO2 emissions, accounting for roughly 11% of industrial carbon output. To mitigate this impact, breakthrough technologies and decarbonization strategies are essential, especially as extreme weather events highlight the urgency of addressing climate change. Potential routes to a low-carbon future for steelmaking are provided by advancements in carbon capture, utilization, and storage (CCUS), hydrogen-based steel manufacturing, and …
Published in International Journal of Metallurgy and Alloys · Vol. 10, Issue 2, 2024 · pp. 11–15 Read article
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A New Method of Unicellular Alga Concentration using Hydrogen Bubbles Photoelectroflotation Process Powered by Solar Energy
Abstract: Most of the existing unicellular algae are used to enrich closed ecosystems with pure oxygen in the process of biosynthesis. The concentrate of unicellular algae contains not only living cells, but also the full range of water-soluble metabolites, contained in their nutrient medium. The concentrate of unicellular algae can be used in any existing animal feeding systems, as well as in the production of granular feed. The most interesting is …
Published in International Journal of Analytical and Applied Chemistry · Vol. 9, Issue 1, 2023 · pp. 1–16 Read article
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Simulation of Biomethane Steam Reforming Plant for Hydrogen Production using Aspen Hysys
Abstract: Aspen Hysys simulation of a process plant for hydrogen production from biomethane through steam reforming process was considered in this work. Models for reactor designs were developed using the principles of conservation of mass and energy. The kinetic model for the biomethane steam reforming process was developed from first principle using the Eley-Rideal mechanistic approach. Computer software (Aspen Hysys) was adopted for the design and for the simulation of the …
Published in International Journal of Chemical Engineering and Processing · Vol. 7, Issue 2, 2021 · pp. 10–20 Read article
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Green Hydrogen based Green Nanotechnology for Industrial Nano waste Treatment
Abstract: The research into nanowaste treatment and recycling is ongoing process. Particularly the development of new methods and technology for nanowaste treatment is a focus of most professionals, scientist and engineers. One of the developments among the emerging technology is the green nanotechnology, which is environmental friend, affordable, an alternative means of clean energy productions, and economically cost effective. This research is therefore, focused on assessment of chemical related waste and …
Published in International Journal of Composite and Constituent Materials · Vol. 8, Issue 2, 2022 · pp. 41–48 Read article
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Characterization of Urine for Production of Bio-Hydrogen Gas forEnergy Utilization using Wood Saw Dusts
Abstract: Research has demonstrated the significance of urine in the area of production of BioH 2 gas for the purpose of energy utilization using wood saw dust as the raw material. The bio-nutrients of the urine was characterized by considering the following parameter and its value determined as demonstrated in the area of pH (6.80), Total Solids (TS) (6050mg/l), Total Dissolved Solids (TDS) (4250mg/l), Total Suspended Solid (TSS) (1800mg/l), Chemical Oxygen …
Published in International Journal of Industrial Biotechnology and Biomaterials · Vol. 12, Issue 2, 2026 Read article