Journal ArticleDOI
Thermochemical methane reforming using a reactive WO3/W redox system
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TLDR
In this article, a two-step process using a WO3/W redox system may be a potentially new thermochemical path that produces useful energy carriers of processed metal, syngas and methanol for storing and transporting solar energy from the sun belt to remote population centers.About:
This article is published in Energy.The article was published on 2000-05-01. It has received 85 citations till now. The article focuses on the topics: Methane reformer & Steam reforming.read more
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High-temperature solar chemistry for converting solar heat to chemical fuels
TL;DR: In this article, the authors reviewed the recent developments on thermochemical conversion of concentrated solar high temperature heat to chemical fuels and discussed the technical developments and feasibilities to conduct these endothermic processes by utilizing concentrated solar radiation as the process heat.
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Review of hydrogen production using chemical-looping technology
TL;DR: In this article, the authors give an overview on the recent advances of two categories, chemical looping reforming (CLR) and Chemical looping hydrogen production (CLH), and the existing technical problems and the aspects of future research of each approach are also summarized.
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Ce–Fe oxygen carriers for chemical-looping steam methane reforming
TL;DR: In this article, the results of the strong Ce-Fe interaction in mixed oxides were analyzed for the chemical-looping steam methane reforming (CL-SMR) process and it was found that Ce 0.5 Fe 0.2 O 2 −Fe 2 O 3 particles were well dispersed on ceria surface and a small amount of iron ions were incorporated into the CeO 2 lattice to form a Ce−Fe O solid solution.
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Perovskite-type oxides LaFe1−xCoxO3 for chemical looping steam methane reforming to syngas and hydrogen co-production
TL;DR: In this article, the influence of Co doping on the characteristics and the stabilities of perovskite-type oxides were investigated by means of X-ray diffraction (XRD), Xray photoelectron spectroscopy (XPS), hydrogen temperature-programmed reduction (H2-TPR), Brunauer-Emmett-Teller (BET) surface area and fixed-bed experiments.
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Oxygen-carrier selection and thermal analysis of the chemical-looping process for hydrogen production
TL;DR: In this article, various candidate materials were proposed for the oxygen carrier and support, and a thermal analysis of the three-reactor chemical-looping process was performed, and the results indicated that hydrogen production was affected mainly by the steam-conversion rate.
References
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Journal ArticleDOI
Hydrogen production from water utilizing solar heat at high temperatures
TL;DR: In this paper, the authors investigated the feasibility of producing hydrogen and oxygen from water utilizing solar heat at high temperatures using a conceptual model and showed that the thermodynamic requirements for the direct thermal decomposer are difficult to realize from the structural viewpoint and that existing separation methods are not applicable for such a decomposition process if it is to attain sufficiently high thermal efficiencies.
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Optimum aperture size and operating temperature of a solar cavity-receiver
Aldo Steinfeld,Markus Schubnell +1 more
TL;DR: In this paper, the authors proposed a semi-empirical method to determine the optimum aperture size and operating temperature of a solar cavity-receiver for which its energy conversion efficiency is maximized.
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A solar chemical reactor for co-production of zinc and synthesis gas
TL;DR: In this paper, a novel solar chemical reactor was designed to perform the combined ZnO-reduction and CH4-reforming processes, consisting of a gas-particle vortex flow confined to a solar cavity-receiver that is exposed to concentrated solar irradiation.
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CO2 reforming of methane in a solar driven volumetric receiver–reactor
Antje Wörner,Rainer Tamme +1 more
TL;DR: In this article, a solar-driven volumetric receiver-reactor with two catalytically active absorber systems was tested on the solar tower test facility of the Weizmann Institute, Israel.
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Model calculations on some feasible two-step water splitting processes
TL;DR: In this article, a number of potential thermochemical water splitting processes has been evaluated quantitatively by computer model calculations and the results from the calculations have been utilized to outline the conditions for hydrogen production and possible deoxidation and reformation subprocesses.