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Updated: Feb 11, 2026

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Synthesis of Non-uniformly Pr-doped SrTiO3 Ceramics and Their Thermoelectric Properties
Published on: August 15, 2015
10.4K
μm- and nm-Sized Catalytic Structures in Heat Sources for Thermoelectric Generators
Journal of Nanoscience and Nanotechnology
|April 26, 2018
Summary
Catalyst structure significantly impacts heat source efficiency for thermoelectric generators. Optimized platinum and transition-metal catalysts achieve high hydrocarbon conversion, enhancing energy generation.
Area of Science:
- Materials Science
- Catalysis
- Thermoelectric Energy Conversion
Background:
- Thermoelectric generators (TEGs) require efficient heat sources for optimal performance.
- Catalyst micro- and nano-structural organization is crucial for combustion completeness in heat sources.
Purpose of the Study:
- To investigate the influence of catalyst micro- and nano-structural organization on TEG heat source efficiency.
- To analyze the distribution of active components in catalysts for maximum organic fuel combustion.
Main Methods:
- Studied two catalyst types: platinum on aluminum oxide (Pt/Al₂O₃) and mixed transition-metal on silicon dioxide (Co–Cr–Pd–Sr/SiO₂).
- Investigated the distribution of active components within catalytic structures.
- Evaluated hydrocarbon conversion rates and catalyst performance.
Main Results:
- Achieved near-complete hydrocarbon conversion (97%) with 1 mass.% platinum in Pt/Al₂O₃ catalyst, utilizing sub-μm- and nm-sized particles.
- Enhanced propane-butane conversion to 97% with Co–Cr–Pd/SiO₂ catalyst by adding 0.5 mass.% strontium (Sr).
- Identified catalytic centers as CoCr₂O₄ nanocrystals (10-40 nm) with palladium (Pd) single-crystal promoters on a SiO₂ matrix.
Conclusions:
- Micro- and nano-structural control of catalysts is key to improving heat source efficiency for TEGs.
- Optimized catalyst formulations, like Pt/Al₂O₃ and Co–Cr–Pd–Sr/SiO₂, demonstrate high combustion efficiency for organic fuels.
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