Hydrogen energy — Abundant, efficient, clean: A debate over the energy-system-of-change☆

Winter, Christoph

doi:10.1016/j.ijhydene.2009.05.063

Cited by 597 publications

(232 citation statements)

References 51 publications

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“…Hydrogen is probably an ultimately vital energy carrier for the future, where fossil fuels are expected to be scarce [1][2][3]. While there are exciting possibilities in the manufacture of hydrogen from renewable sources, primarily water and biomass, there are also non-electrochemical pathways to achieve hydrogen production, notably by the use of cyclic pathways that can tap into very high quality heat, available in nuclear power plants.…”

Section: Introductionmentioning

confidence: 99%

Catalytic performance of bimetallic Ni-Pt nanoparticles supported on activated carbon, gamma-alumina, zirconia, and ceria for hydrogen production in sulfur-iodine thermochemical cycle

Singhania

Krishnan

Bhaskarwar

et al. 2016

International Journal of Hydrogen Energy

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Bimetallic Ni-Pt nanoparticles supported on four different supports (activated carbon (AC)) 1 , γ-alumina, zirconia, and ceria) were prepared by modified impregnation-reduction technique for decomposition of hydrogen iodide to hydrogen and iodine, in the thermochemical water-splitting sulfur-iodine (SI) cycle. The catalysts were characterized by powder X-ray diffraction (XRD), transmission electron microscopy (TEM), and Brunauer-Emmett-Teller (BET) method to find their structure, morphology, and surface area, respectively. High metal dispersions (Ni-Pt) were obtained with particle sizes of the order of 10 nm or lesser, in the high-surface-area supports. The hydrogen iodide-decomposition results showed the following catalytic activity order of Ni-Pt nanoparticles on different supports: Ni(2.5%)-Pt(2.5%)/AC > Ni(2.5%)-Pt(2.5%)/γ-alumina > Ni(2.5%)-Pt(2.5%)/Zirconia > Ni(2.5%)-Pt(2.5%)/Ceria. Bimetallic Ni(2.5%)-Pt(2.5%)/AC also showed excellent stability for 100 h in the hydrogen iodide-decomposition reaction, and with a higher performance relative to the corresponding Pt supported catalyst under the same operating conditions.

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Section: Introductionmentioning

confidence: 99%

Catalytic performance of bimetallic Ni-Pt nanoparticles supported on activated carbon, gamma-alumina, zirconia, and ceria for hydrogen production in sulfur-iodine thermochemical cycle

Singhania

Krishnan

Bhaskarwar

et al. 2016

International Journal of Hydrogen Energy

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“…New strategies such as low carbon fuel options, revolutionary combustion engine designs and exhaust after-treatment systems are required to meet these challenges [7][8][9][10]. Utilisation of low carbon fuel options such as high hydrogen content (HHC) syngas fuel is important to the clean combustion technology [11][12][13][14][15]. In particular, burning issues of lean premixed combustion of HHC hydrogen-carbon monoxide (H2/CO) syngas fuel at elevated pressures have received considerable attention in recent years [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Effects of pressure on cellular flame structure of high hydrogen content lean premixed syngas spherical flames: A DNS study

Dinesh

Shalaby

Luo

et al. 2016

International Journal of Hydrogen Energy

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2016). Effects of pressure on cellular flame structure of high hydrogen content lean premixed syngas spherical flames: A DNS study. International Journal of Hydrogen Energy, 41(46), 21516-21531. DOI: 10.1016/j.ijhydene.2016 General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. The joint probability density functions of OH radical mass fraction and temperature show broadening OH values in the high temperature zone at elevated pressures compared to its distribution at the atmospheric pressure. Comparisons of mean species distributions of 3 OH and HO2 over temperature between laminar and turbulent flames show that pressure elevation has a major influence on the flame structure in the composition space.

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“…Es compatible con los actuales sistemas de suministro de energía y con la producción de calor; y algo sumamente ventajoso: cuando se obtiene por electrólisis, con la electricidad requerida de origen renovable, su sistema energético es cerrado, de manera que el H 2 constituye una ruta excelente entre la fuente primaria renovable y los usuarios finales [3]. Estas características del H 2 han motivado la propuesta de la Economía del H 2 , innovadora estructura energética conducida por los paradigmas energéticos emergentes de equidad, sustentabilidad y cooperación.…”

Section: Introductionunclassified

La Economía del Hidrógeno en el Ecuador: oportunidades y barreras

Rivera

Quezada

2014

Av. Cienc. Ing. (Quito)

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The hydrogen economy, H2, is an emerging energy paradigm proposed to H2 as the vector that drives the development of human society in this century, and as embodied in the energy system Solar Hydrogen SESH where primary sources are renewable, and it is the secondary source H2. A large number of countries are undertaking plans to incorporate the SESH in their energy structure. In this context, this paper argues whose purpose is to identify and analyze the factors involved in the development of SESH in Ecuador, through research supported methodologically on a literature review and a survey of a group of experts involved, from different fields, renewable energy and the H2 as a vector. It is obtained that the country has sufficient potential exploitable renewable energy to ensure the operability of SESH, with hydropower and biomass are the most appropriate sources. Furthermore, the vision of development of the Ecuadorian state, driving the transformation of the energy matrix by the massive incorporation of renewable energy, would favor the gradual penetration SESH, especially in two niche opportunities, rural electrification and urban transport. Barriers are also reported: scarce and scattered research activity; minimum formation of human talent necessary for the operation and innovation in the technologies of H2; absence of a legal and regulatory framework that encourages penetration SESH and the incipient formation of collaborative networks in research and advocacy, in the balance predominate advantages over the barriers. It is concluded that only by agreed action academia, research centers and private companies, under the tutelage of the state will allow this new energy system contributes to sustainable development and conductive Ecuador joining hydrogen economy.Keywords. Energy systems, hydrogen energy, renewable energy, Ecuador. ResumenLa economía del hidrógeno, H2, es un paradigma energético emergente que propone al H2 como el vector que conduzca el desarrollo de la sociedad humana en este siglo, y que se concreta en el sistema energético Solar Hidrógeno, SESH, en el cual las fuentes primarias son renovables y la fuente secundaria es el H2. Una amplia cantidad de países están emprendiendo planes para la incorporación del SESH en su estructura energética. En este contexto se plantea este artículo cuyo propósito es identificar y analizar los factores intervinientes en el desarrollo del SESH en el Ecuador, mediante una investigación soportada metodológicamente en una encuesta aplicada a un conjunto de expertos involucrados, desde diferentes ámbitos, con las energías renovables y con el H2 como vector, y en una revisión documental. Se obtiene que el país dispone de suficientes potenciales aprovechables de energías renovables para garantizar la operatividad del SESH, siendo la hidroenergía y la biomasa las fuentes más adecuadas. Además, la visión del desarrollo del Estado ecuatoriano, impulsando la transformación de la matriz energética mediante la incorporación masiva de las energías renovables, favorecería...

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Hydrogen energy — Abundant, efficient, clean: A debate over the energy-system-of-change☆

Cited by 597 publications

References 51 publications

Catalytic performance of bimetallic Ni-Pt nanoparticles supported on activated carbon, gamma-alumina, zirconia, and ceria for hydrogen production in sulfur-iodine thermochemical cycle

Catalytic performance of bimetallic Ni-Pt nanoparticles supported on activated carbon, gamma-alumina, zirconia, and ceria for hydrogen production in sulfur-iodine thermochemical cycle

Effects of pressure on cellular flame structure of high hydrogen content lean premixed syngas spherical flames: A DNS study

La Economía del Hidrógeno en el Ecuador: oportunidades y barreras

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