Solar kerosene from H2O and CO2

Furler, Philipp; Marxer, Daniel; Reinalda, Donald; Geerlings, Hans; Falter, Christoph; Batteiger, Valentin; Sizmann, A.; Steinfeld, Aldo

doi:10.1063/1.4984463

Cited by 12 publications

(5 citation statements)

References 20 publications

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“…The maximum CO production rate reached ~9.4 mL/g/min for oxidation in 100% CO 2 (cycle #28 in Table 1). This means that a 8 fold-increase of the fuel production rate was achieved with the studied microstructured ceria foams (microstructural characterization provided in the next section), when compared to previously reported values [18,23,24,32]. The fuel production rate can even be enhanced further (up to 9.9 mL/g/min for cycle #32) by increasing the total gas flow-rate (inducing products dilution).…”

Section: Parameters Investigated During the Oxidation Stepsupporting

confidence: 61%

“…Furthermore, the CO production rate was remarkably high, in the range of 4 to 7 mL/g/min, representing the highest rates obtained to date with ceria and thus a strong improvement in the performance of solar fuel reactors based on reticulated porous ceria. In comparison, Furler et al [23,24,32] obtained a maximal fuel production rate of 1.2 mL/g/min with more stringent operational conditions (1450°C and 10 hPa) in an electrically-heated high-flux simulator using ceria foams with dual-scale porosity. In the present study, the microstructured ceria foams were subjected to real concentrated high-flux solar radiation in a scalable solar reactor and were found to sustain fuel production cycles without any reactivity loss.…”

Section: Thermal Stability Of the Porous Ceria Foamsmentioning

confidence: 99%

“…Using a gas-phase heat recovery system, the solar-to-fuel efficiency reached 1.64 % without taking into account the inert gas energy costs [20]. An electrically-heated monolithic reactor irradiated by artificial light, with porous ceria as reactive material was developed elsewhere [21][22][23]. Stable and rapid fuel production was demonstrated over 500 cycles with peak and average solar-to-fuel efficiencies of 3.53 % and 1.73 %, respectively [22].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Remarkable performance of microstructured ceria foams for thermochemical splitting of H2O and CO2 in a novel high–temperature solar reactor

Haeussler

Abanades

Julbe

et al. 2020

Chemical Engineering Research and Design

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Thermochemical splitting of H 2 O and CO 2 applying redox materials constitutes a sustainable option for synthetic fuel production and CO 2 valorization. It consists of two-step process based on the creation of oxygen vacancies in non-stoichiometric oxides during solar-driven thermal reduction, followed by the material re-oxidation with H 2 O and/or CO 2 to generate syngas (H 2 /CO), the building block for a wide variety of synthetic hydrocarbon fuels. In this work, a monolithic solar reactor was designed and tested integrating reticulated porous ceria (open-cell foams) heated by concentrated solar energy. The influence of various operating parameters on the thermochemical reactor performance was investigated. Increasing the temperature or decreasing the pressure in the reduction step was found to enhance the maximum reduction extent reached by the redox material (CeO 2- ), thereby improving the fuel production capacity. In addition, a decrease of the oxidation temperature led to higher fuel production rate, despite an increase of the temperature swing between the reduction and oxidation steps. Increasing the oxidant concentration also sharply enhanced the oxidation rate. Peak CO production rate approaching 10 mL/min/g was achieved with ceria foams (exhibiting micron-sized grains forming an interconnected macroporous network within the struts) during their reoxidation upon free cooling with pure CO 2 stream (after reduction at 1400°C), thus strongly outperforming (by a factor of about x8) the previous maximum values reported to date. This result was attributed to the fine and stable granular microstructure of the reticulated ceria foams. The solar reactor reliability and robustness during hightemperature two-step redox cycling were demonstrated with an average cycle production of 5.1 mL/g of H 2 and CO, and peak solar-to-fuel efficiencies above 8%. The highly reactive reticulated foams with 10 and 20 ppi (pore per inch) were cycled for about 69 hours (51 cycles) of continuous on-sun operation without any decrease in performance, thus evidencing their noteworthy thermochemical and microstructural stability.

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Section: Parameters Investigated During the Oxidation Stepsupporting

confidence: 61%

Section: Thermal Stability Of the Porous Ceria Foamsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Remarkable performance of microstructured ceria foams for thermochemical splitting of H2O and CO2 in a novel high–temperature solar reactor

Haeussler

Abanades

Julbe

et al. 2020

Chemical Engineering Research and Design

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show abstract

“…e Average per carbon atom. f CO 2 converted to CO, in turn converted to hydrocarbons via Fischer-Tropsch synthesis 85 .…”

Section: The Sabatier Reaction In the Clean Energy Transitionmentioning

confidence: 99%

The renaissance of the Sabatier reaction and its applications on Earth and in space

et al. 2019

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“…In addition, thermal applications have been recently proposed in the so-called Concentrating Solar Thermal, CST. Two of such high-temperatures examples can be found in the green production of hydrogen [2] and sustainable aviation fuels (SAF) [3], which, driving endothermic reactions at high temperatures through solar heat, are able to produce fuels from water and CO2 and thus to effectively close the fossil fuel carbon cycle [4], but which require temperatures from above 700 °C up to ~1550 °C. These solar-driven chemical processes show an outstanding potential.…”

Section: Introductionmentioning

confidence: 99%

Novel ceramic fibre - Zirconium diboride composites for solar receivers in concentrating solar power systems

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et al. 2022

Composites Part B: Engineering

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Solar kerosene from H2O and CO2

Cited by 12 publications

References 20 publications

Remarkable performance of microstructured ceria foams for thermochemical splitting of H2O and CO2 in a novel high–temperature solar reactor

Remarkable performance of microstructured ceria foams for thermochemical splitting of H2O and CO2 in a novel high–temperature solar reactor

The renaissance of the Sabatier reaction and its applications on Earth and in space

Novel ceramic fibre - Zirconium diboride composites for solar receivers in concentrating solar power systems

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