Aldo Steinfeld
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View article: A Solar Air Receiver With Porous Ceramic Structures for Process Heat at Above 1000 °C—Heat Transfer Analysis
A Solar Air Receiver With Porous Ceramic Structures for Process Heat at Above 1000 °C—Heat Transfer Analysis Open
Concentrated solar energy can be used as the source of heat at above 1000 °C for driving key energy-intensive industrial processes, such as cement manufacturing and metallurgical extraction, contributing to their decarbonization. The corne…
View article: Solar Thermochemical Production of Syngas from H<sub>2</sub>O and CO<sub>2</sub>─Experimental Parametric Study, Control, and Automation
Solar Thermochemical Production of Syngas from H<sub>2</sub>O and CO<sub>2</sub>─Experimental Parametric Study, Control, and Automation Open
We report on an experimental parametric study performed on a modular and fully automated solar fuel system for the solar-driven thermochemical splitting of CO₂ and H₂O. Concentrated solar energy is used as the source of high-temperature pr…
View article: Thermochemical production of ammonia <i>via</i> a two-step metal nitride cycle – materials screening and the strontium-based system
Thermochemical production of ammonia <i>via</i> a two-step metal nitride cycle – materials screening and the strontium-based system Open
Combined theoretical and experimental screening of metal nitrides for the thermochemical production of ammonia without added catalyst.
View article: Solar‐Driven Redox Splitting of CO<sub>2</sub> Using 3D‐Printed Hierarchically Channeled Ceria Structures (Adv. Mater. Interfaces 30/2023)
Solar‐Driven Redox Splitting of CO<sub>2</sub> Using 3D‐Printed Hierarchically Channeled Ceria Structures (Adv. Mater. Interfaces 30/2023) Open
Redox Splitting of CO2 Solar fuels are produced from CO2 and H2O via a thermochemical redox cycle using concentrated solar radiation. In article 2300452, Steinfeld, Studart, and co-workers produced solar fuels from CO2 and H2O via a thermo…
View article: Design and Optimization of Hierarchically Ordered Porous Structures for Solar Thermochemical Fuel Production Using a Voxel-Based Monte Carlo Ray-Tracing Algorithm
Design and Optimization of Hierarchically Ordered Porous Structures for Solar Thermochemical Fuel Production Using a Voxel-Based Monte Carlo Ray-Tracing Algorithm Open
Porous structures can be favorably used in solar thermochemical reactors for the volumetric absorption of concentrated solar radiation. In contrast to isotropic porous topologies, hierarchically ordered porous topologies with stepwise opti…
View article: Solar‐Driven Redox Splitting of CO<sub>2</sub> Using 3D‐Printed Hierarchically Channeled Ceria Structures
Solar‐Driven Redox Splitting of CO<sub>2</sub> Using 3D‐Printed Hierarchically Channeled Ceria Structures Open
Fuel produced from CO 2 and H 2 O using solar energy can contribute to making aviation more sustainable. Particularly attractive is the thermochemical production pathway via a ceria‐based redox cycle, which uses the entire solar spectrum a…
View article: Intensification of the reverse water–gas shift process using a countercurrent chemical looping regenerative reactor
Intensification of the reverse water–gas shift process using a countercurrent chemical looping regenerative reactor Open
Chemical reactions have thermodynamic limits on species conversion which can negatively impact process design. Unconverted feedstock often needs to be separated and recycled, increasing energy demand, process complexity and cost. Just as i…
View article: Methane dry reforming <i>via</i> a ceria-based redox cycle in a concentrating solar tower
Methane dry reforming <i>via</i> a ceria-based redox cycle in a concentrating solar tower Open
Solar-driven methane dry reforming via a ceria-based thermochemical redox cycle in a concentrating solar tower to produce solar syngas with a solar-to-fuel energy efficiency of 27%.
View article: High-temperature heat recovery from a solar reactor for the thermochemical redox splitting of H2O and CO2
High-temperature heat recovery from a solar reactor for the thermochemical redox splitting of H2O and CO2 Open
The solar splitting of H2O and CO2 via a thermochemical redox cycle offers a viable pathway for producing sustainable drop-in fuels for the transportation sectors. The key performance metric is its solar-to-fuel energy efficiency, which is…
View article: Designing Hospitals Through the Lens of Universal Design. An Evaluation Tool to Enhance Inclusive Healthcare Facilities
Designing Hospitals Through the Lens of Universal Design. An Evaluation Tool to Enhance Inclusive Healthcare Facilities Open
Various studies highlight a gap on reliable methods to measure the quality of projects and environments in terms of Universal Design (UD) and Design for All (DfA). In particular, healthcare facilities need decision support systems to impro…
View article: Thermochemical Hydrogen Storage via the Reversible Reduction and Oxidation of Metal Oxides
Thermochemical Hydrogen Storage via the Reversible Reduction and Oxidation of Metal Oxides Open
In this work, we perform a technical analysis of a cyclic reduction and oxidation process of metal oxides applied as a hydrogen storage route. Hydrogen is used to reduce a metal oxide and form steam, and regenerated by oxidizing the reduce…
View article: Experimental Investigation of a Thermochemical Reactor for High-Temperature Heat Storage via Carbonation-Calcination Based Cycles
Experimental Investigation of a Thermochemical Reactor for High-Temperature Heat Storage via Carbonation-Calcination Based Cycles Open
We report on the design of a modular, high-temperature thermochemical energy storage system based on endothermic-exothermic reversible gas-solid reactions for application in concentrated solar power and industrial thermal processes. It con…
View article: Performance Indicators for Benchmarking Solar Thermochemical Fuel Processes and Reactors
Performance Indicators for Benchmarking Solar Thermochemical Fuel Processes and Reactors Open
Concentrated solar energy offers a source for renewable high-temperature process heat that can be used to efficiently drive endothermic chemical processes, converting the entire spectrum of solar radiation into chemical energy. In particul…
View article: CSD 2031549: Experimental Crystal Structure Determination
CSD 2031549: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: CSD 2031547: Experimental Crystal Structure Determination
CSD 2031547: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: CSD 2031559: Experimental Crystal Structure Determination
CSD 2031559: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: Reversible Phase Transformations in Novel Ce‐Substituted Perovskite Oxide Composites for Solar Thermochemical Redox Splitting of CO<sub>2</sub>
Reversible Phase Transformations in Novel Ce‐Substituted Perovskite Oxide Composites for Solar Thermochemical Redox Splitting of CO<sub>2</sub> Open
Thermochemical splitting of CO 2 and H 2 O via two‐step metal oxide redox cycles offers a promising approach to produce solar fuels. Perovskite‐type oxides with the general formula ABO 3 have recently gained attention as an attractive redo…
View article: Thermodynamic comparison of solar methane reforming via catalytic and redox cycle routes
Thermodynamic comparison of solar methane reforming via catalytic and redox cycle routes Open
Thermochemical methane reforming to syngas is performed on a massive scale in the chemical industry, providing feedstock for many chemical processes such as hydrogen, ammonia and methanol production. The high temperature process heat requi…
View article: Experimental testing of a solar air cavity-receiver with reticulated porous ceramic absorbers for thermal processing at above 1000 °C
Experimental testing of a solar air cavity-receiver with reticulated porous ceramic absorbers for thermal processing at above 1000 °C Open
Concentrated solar energy can be used as the source of high-temperature heat for industrial processes, but the challenge is to design a solar receiver that can effect such a thermal conversion efficiently. This study reports on the enginee…
View article: High-Temperature Thermochemical Heat Storage via the CuO/Cu<sub>2</sub>O Redox Cycle: From Material Synthesis to Packed-Bed Reactor Engineering and Cyclic Operation
High-Temperature Thermochemical Heat Storage via the CuO/Cu<sub>2</sub>O Redox Cycle: From Material Synthesis to Packed-Bed Reactor Engineering and Cyclic Operation Open
A thermochemical redox cycle based on the CuO/Cu2O pair is considered for high-temperature heat storage in concentrated solar energy applications. A synthesis method is developed for the manufacturing of porous CuO-based granules with yttr…
View article: Dual Hydrogen- and Oxygen-Transport Membrane Reactor for Solar-Driven Syngas Production
Dual Hydrogen- and Oxygen-Transport Membrane Reactor for Solar-Driven Syngas Production Open
A novel thermochemical dual-membrane reactor is considered with the goal of efficiently converting CO2 to fuels using concentrated solar energy as the process heat source. In contrast to the temperature-swing redox cycle, in this isotherma…
View article: Dual Hydrogen- and Oxygen-Transport Membrane Reactor for Solar-Driven Syngas Production
Dual Hydrogen- and Oxygen-Transport Membrane Reactor for Solar-Driven Syngas Production Open
A novel thermochemical dual-membrane reactor is considered with the goal of efficiently converting CO2 to fuels using concentrated solar energy as the process heat source. In contrast to the temperature-swing redox cycle, in this isotherma…