Solar Thermochemical Fuel Production via a Novel Low Pressure, Magnetically Stabilized, Non-volatile Iron Oxide Looping Process (University of Florida)

2018 ◽  
Author(s):  
David W. Hahn
Keyword(s):  
Iron Oxide ◽  
Low Pressure ◽  
Fuel Production ◽  
University Of Florida ◽  
Solar Thermochemical

Transition metal doped ceria for solar thermochemical fuel production

Solar Energy ◽  
2018 ◽  
Vol 172 ◽  
pp. 204-211 ◽  
Author(s):  
G.D. Takalkar ◽  
R.R. Bhosale ◽  
A. Kumar ◽  
F. AlMomani ◽  
M. Khraisheh ◽  
...  
Keyword(s):  
Transition Metal ◽  
Doped Ceria ◽  
Fuel Production ◽  
Solar Thermochemical ◽  
Metal Doped

scholarly journals Effects of Dopant Metal Variation and Material Synthesis Method on the Material Properties of Mixed Metal Ferrites in Yttria Stabilized Zirconia for Solar Thermochemical Fuel Production

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Jeffrey Leonard ◽  
Nichole Reyes ◽  
Kyle M. Allen ◽  
Kelvin Randhir ◽  
Like Li ◽  
...  
Keyword(s):  
Synthesis Method ◽  
Yttria Stabilized Zirconia ◽  
Synthesis Process ◽  
Synthesis Methods ◽  
Stabilized Zirconia ◽  
Fuel Production ◽  
Solid State Method ◽  
Wet Chemistry ◽  
Mixed Metal ◽  
Solar Thermochemical

Mixed metal ferrites have shown much promise in two-step solar-thermochemical fuel production. Previous work has typically focused on evaluating a particular metal ferrite produced by a particular synthesis process, which makes comparisons between studies performed by independent researchers difficult. A comparative study was undertaken to explore the effects different synthesis methods have on the performance of a particular material during redox cycling using thermogravimetry. This study revealed that materials made via wet chemistry methods and extended periods of high temperature calcination yield better redox performance. Differences in redox performance between materials made via wet chemistry methods were minimal and these demonstrated much better performance than those synthesized via the solid state method. Subsequently, various metal ferrite samples (NiFe2O4, MgFe2O4, CoFe2O4, and MnFe2O4) in yttria stabilized zirconia (8YSZ) were synthesized via coprecipitation and tested to determine the most promising metal ferrite combination. It was determined that 10 wt.% CoFe2O4in 8YSZ produced the highest and most consistent yields of O2and CO. By testing the effects of synthesis methods and dopants in a consistent fashion, those aspects of ferrite preparation which are most significant can be revealed. More importantly, these insights can guide future efforts in developing the next generation of thermochemical fuel production materials.

scholarly journals Maximizing fuel production rates in isothermal solar thermochemical fuel production

2016 ◽  
Vol 183 ◽  
pp. 1098-1111 ◽  
Author(s):  
Timothy C. Davenport ◽  
Chih-Kai Yang ◽  
Christopher J. Kucharczyk ◽  
Michael J. Ignatowich ◽  
Sossina M. Haile
Keyword(s):  
Fuel Production ◽  
Production Rates ◽  
Solar Thermochemical

scholarly journals Solar thermochemical fuel production from H2O and CO2 splitting via two-step redox cycling of reticulated porous ceria structures integrated in a monolithic cavity-type reactor

Energy ◽  
2020 ◽  
Vol 201 ◽  
pp. 117649 ◽  
Author(s):  
Anita Haeussler ◽  
Stéphane Abanades ◽  
Anne Julbe ◽  
Julien Jouannaux ◽  
Bruno Cartoixa
Keyword(s):  
Redox Cycling ◽  
Fuel Production ◽  
Type Reactor ◽  
Solar Thermochemical

Oxygen Exchange in Dual-Phase La0.65Sr0.35MnO3–CeO2 Composites for Solar Thermochemical Fuel Production

2020 ◽  
Vol 12 (29) ◽  
pp. 32622-32632 ◽  
Author(s):  
Alexander H. Bork ◽  
Alfonso J. Carrillo ◽  
Zachary D. Hood ◽  
Bilge Yildiz ◽  
Jennifer L. M. Rupp
Keyword(s):  
Oxygen Exchange ◽  
Dual Phase ◽  
Fuel Production ◽  
Solar Thermochemical

Climate Impact and Economic Feasibility of Solar Thermochemical Jet Fuel Production

2015 ◽  
Vol 50 (1) ◽  
pp. 470-477 ◽  
Author(s):  
Christoph Falter ◽  
Valentin Batteiger ◽  
Andreas Sizmann
Keyword(s):  
Climate Impact ◽  
Jet Fuel ◽  
Economic Feasibility ◽  
Fuel Production ◽  
Solar Thermochemical

Solar Thermochemical Water-Splitting Ferrite-Cycle Heat Engines

Solar Energy ◽  
2006 ◽  
Author(s):  
Richard B. Diver ◽  
James E. Miller ◽  
Mark D. Allendorf ◽  
Nathan P. Siegel ◽  
Roy E. Hogan
Keyword(s):  
Iron Oxide ◽  
High Efficiency ◽  
Heat Engine ◽  
High Concentration ◽  
Thermochemical Cycles ◽  
Design Concepts ◽  
Heat Engines ◽  
Close Proximity ◽  
Solar Thermochemical ◽  
Development Approach

Thermochemical cycles are a type of heat engine that utilize high-temperature heat to produce chemical work. Like their mechanical work-producing counterparts, their efficiency depends on operating temperature and on the irreversibilities of their internal processes. With this in mind, we have invented innovative design concepts for two-step solar-driven thermochemical heat engines based on iron oxide and iron oxide mixed with other metal oxides (ferrites). These concepts utilize two sets of moving beds of ferrite reactant material in close proximity and moving in opposite directions to overcome a major impediment to achieving high efficiency – thermal recuperation between solids in efficient counter-current arrangements. They also provide inherent separation of the product hydrogen and oxygen and are an excellent match with high-concentration solar flux. However, they also impose unique requirements on the ferrite reactants and materials of construction as well as an understanding of the chemical and cycle thermodynamics. In this paper, the Counter-Rotating-Ring Receiver/Reactor/Recuperator (CR5) solar thermochemical heat engine concept is introduced and its basic operating principals are described. Preliminary thermal efficiency estimates are presented and discussed. Our results and development approach are also outlined.

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