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Dynamic simulation of GEH-IES with distributed parameter characteristics for hydrogen-blending transportation

Frontiers in Energy doi: 10.1007/s11708-023-0914-4

Abstract: Hydrogen-blending natural gas pipeline is an efficient approach for hydrogen transportation.However, hydrogen-blending natural gas complicates the whole integrated energy system (IES), making itThe dynamics of hydrogen-blending IES is undiscovered.The results show that hydrogen blending timely and spatially influences the flow parameters, of whichMoreover, the hydrogen-blending amount and position also have a significant impact on the performance

Keywords： gas–electricity IES dynamic simulation hydrogen blending power to gas (P2G) renewable energy

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Industrial Development of Hydrogen Blending in Natural Gas Pipelines in China

Zhong Bing, Zhang Xuexiu, Zhang Bo, Peng Suping

Strategic Study of CAE 2022, Volume 24, Issue 3, Pages 100-107 doi: 10.15302/J-SSCAE-2022.03.011

Abstract: The efficiency of hydrogen transportation is key to the development of hydrogen industry.Blending hydrogen in natural gas pipelines can improve the scale and efficiency of hydrogen distributionBased on defining the industrial chain of hydrogen blending in natural gas pipelines, the paper discussesthe values of developing the blending industry in terms of promoting the hydrogen industry, resolvingIt unravels key issues regarding the hydrogen blending proportion, adaptability of pipes and terminal

Keywords： hydrogen blending in natural gas pipelines hydrogen transportation natural gas pipeline networks renewable

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Power to gas: addressing renewable curtailment by converting to hydrogen

Xiaohe YAN, Xin ZHANG, Chenghong GU, Furong LI

Frontiers in Energy 2018, Volume 12, Issue 4, Pages 560-568 doi: 10.1007/s11708-018-0588-5

Abstract: expand transfer capacity, and the conversion of excessive renewable into other energy types, such as hydrogenFrom demonstration, it is reasonable to conclude that converting excessive wind power into hydrogen to

Keywords： blending hydrogen cost-benefit analysis electrolysis wind curtailment

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Production of renewable fuels by blending bio-oil with alcohols and upgrading under supercritical conditions

Sainab Omar, Suzanne Alsamaq, Yang Yang, Jiawei Wang

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4, Pages 702-717 doi: 10.1007/s11705-019-1861-9

Abstract: The work studied a non-catalytic upgrading of fast pyrolysis bio-oil by blending under supercriticalconditions using methanol, ethanol and isopropanol as solvent and hydrogen donor.nuclear magnetic resonance spectroscopy, and thermogravimetric analysis to evaluate the effects of blendingSimply blending crude bio-oil with isopropanol was effective in increasing the C and H content, reducing

Keywords： bio-oil blending supercritical upgrading characterisation

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Improved blending strategy for membrane modification by virtue of surface segregation using surface-tailored

Shuai Liang, Peng Gao, Xiaoqi Gao, Kang Xiao, Xia Huang

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 6, doi: 10.1007/s11783-016-0875-5

Abstract: Blending with amphiphilic nanoparticles further enhances membrane hydrophilicity.Excessive silanization cause adverse effect on blending efficiency.Blending modification with nanoparticles (NPs), owing to the convenience of being incorporated in establishedHowever, the existing blending strategy suffers from a low utilization efficiency due to NP encasementThe current study proposed an improved blending modification approach with amphiphilic NPs (aNPs), which

Keywords： Membrane modification Nanoparticle Hydrophilic Amphiphilic Blending

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Online gasoline blending with EPA Complex Model for predicting emissions

Stefan JANAQI, Mériam CHÈBRE, Guillaume PITOLLAT

Frontiers of Engineering Management 2018, Volume 5, Issue 2, Pages 214-226 doi: 10.15302/J-FEM-2017022

Abstract: The difficulty in implementing this model in the blending process stems from the implicit definition

Keywords： emissions reformulated gasoline online control global optimization

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Extending blending proportions of ordinary Portland cement and calcium sulfoaluminate cement blends:

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5, Pages 1249-1260 doi: 10.1007/s11709-021-0770-4

Abstract: This study extended blending proportion range of ordinary Portland cement (OPC) and calcium sulfoaluminate

Keywords： calcium sulfoaluminate cement cement blends hydration reaction setting workability compressive strength

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PVDF ultrafiltration membranes of controlled performance via blending PVDF-g-PEGMA copolymer synthesized

Shuai Wang, Tong Li, Chen Chen, Baicang Liu, John C. Crittenden

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 2, doi: 10.1007/s11783-017-0980-0

Abstract: Polyvinylidene fluoride grafted with poly(ethylene glycol) methyl ether methacrylate (PVDF-g-PEGMA) was synthesized using atomic transfer radical polymerization (ATRP) at different reaction times (9 h, 19 h, and 29 h). The corresponding conversion rates were 10%, 20% and 30%, respectively. PVDF was blended with the copolymer mixture containing PVDF-g-PEGMA, solvent and residual PEGMA under different reaction times. In this study, we explored the effect of the copolymer mixture additives with different synthesis times on cast membrane performance. Increasing the reaction time of PVDF-g-PEGMA causes more PVDF-g-PEGMA and less residual PEGMA to be found in the casting solution. Incremental PVDF-g-PEGMA can dramatically increase the viscosity of the casting solution. An overly high viscosity led to a delayed phase inversion, thus hindering PEGMA segments in PVDF-g-PEGMA from migrating to the membrane surface. However, more residual PEGMA contributed to helping more PEGMA segments migrate to the membrane surface. The pure water fluxes of the blended membrane with reaction times of 9 h, 19 h, and 29 h are 5445 L·m ·h , 1068 L·m ·h and 1179 L·m ·h , respectively, at 0.07 MPa. Delayed phase inversion can form smaller surface pore size distributions, thus decreasing the water flux for the membranes with PVDF-g-PEGMA at 19 h and 29 h. Therefore, we can control the membrane pore size distribution by decreasing the reaction time of PVDF-g-PEGMA to obtain a better flux performance. The membrane with PVDF-g-PEGMA at 19 h exhibits the best foulant rejection and cleaning recovery due to its narrow pore size distribution and high surface oxygen content.

Keywords： Polyvinylidene fluoride ultrafiltration membrane Amphiphilic copolymer Blended modification High flux Atomic transfer radical polymerization

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A systemic review of hydrogen supply chain in energy transition

Frontiers in Energy 2023, Volume 17, Issue 1, Pages 102-122 doi: 10.1007/s11708-023-0861-0

Abstract: Targeting the net-zero emission (NZE) by 2050, the hydrogen industry is drastically developing in recentHowever, the technologies of hydrogen upstream production, midstream transportation and storage, andIn this paper, the development of hydrogen industry from the production, transportation and storage,In the upstream, blue hydrogen is dominating the current hydrogen supply, and an implementation of carbonTo achieve an economic feasibility, green hydrogen needs to reduce its cost by 75% to approximately 2

Keywords： hydrogen production hydrogen transportation and storage hydrogen economy carbon capture and sequestration

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Special issue on electrochemical conversion and utilization of hydrogen energy

Frontiers in Energy 2024, Volume 18, Issue 3, Pages 263-264 doi: 10.1007/s11708-024-0944-6

Abstract: Special issue on electrochemical conversion and utilization of hydrogen energy

Keywords： hydrogen energy

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Organic conjugated polymers and polymer dots as photocatalysts for hydrogen production

Frontiers in Energy 2021, Volume 15, Issue 1, Pages 667-677 doi: 10.1007/s11708-021-0767-7

Abstract: process large breadth of potential synthetic diversity are the representative of photocatalysts for hydrogenshowed a superior photocatalytic activity and a robust stability under visible-light irradiation, for hydrogenFinally, challenges and outlook on using organic polymer dots-based photocatalysts from hydrogen production

Keywords： polymer dots (Pdots) photocatalysis hydrogen production

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Recent advances of small-molecule fluorescent probes for detecting biological hydrogen sulfide

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 1, Pages 34-63 doi: 10.1007/s11705-021-2050-1

Abstract: Moreover, we also introduced some probes for hydrogen polysulfides.

Keywords： hydrogen sulfide fluorescent probe reducibility nucleophilicity copper sulfide precipitate hydrogen

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Production of hydrogen from fossil fuel: A review

Frontiers in Energy 2023, Volume 17, Issue 5, Pages 585-610 doi: 10.1007/s11708-023-0886-4

Abstract: Production of hydrogen, one of the most promising alternative clean fuels, through catalytic conversionCatalytic conversion of natural gas into hydrogen and carbon is thermodynamically favorable under atmosphericHowever, using noble metals as a catalyst is costly for hydrogen production, thus mandating non-nobleThis paper reviews the various hydrogen production methods from fossil fuels through pyrolysis, partialoxidation, autothermal, and steam reforming, emphasizing the catalytic production of hydrogen via steam

Keywords： methane catalytic conversion natural gas hydrogen production CCUS

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Bilayer borophene: an efficient catalyst for hydrogen evolution reaction

Frontiers of Chemical Science and Engineering 2024, Volume 18, Issue 3, doi: 10.1007/s11705-024-2389-1

Abstract: The electrocatalytic hydrogen evolution reaction is a crucial technique for green hydrogen productionwe systematically considered nine types of bilayer borophenes as potential electrocatalysts for the hydrogenthe bridge sites between two boron atoms can serve as active sites, displaying high activity for the hydrogenMoreover, the hydrogen evolution reaction activity of these two-dimensional bilayer borophenes can beAdditionally, we considered the effect of pH on hydrogen evolution reaction activity, with significant

Keywords： bilayer borophene hydrogen evolution reaction work function pH effect

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Hydrogen Storage Performance During Underground Hydrogen Storage in Depleted Gas Reservoirs: A Review

Lingping Zeng,Regina Sander,Yongqiang Chen,Quan Xie,

Engineering doi: 10.1016/j.eng.2024.03.011

Abstract: Hydrogen has emerged as a promising alternative to meet the growing demand for sustainable and renewableUnderground hydrogen storage (UHS) in depleted gas reservoirs holds significant potential for large-scaleHydrogen deliverability, hydrogen trapping, and the equation of state are key areas with limited understandingThis literature review critically analyzes and synthesizes existing research on hydrogen storage performanceAddressing these gaps will advance hydrogen-based energy systems and support the transition to a sustainable

Keywords： Underground hydrogen storage Storage performance Hydrogen deliverability Hydrogen trapping Risk assessment