Metal sulfate decomposition using green Pd-based catalysts supported on γAl2O3 and SiC: A common step in sulfur-family thermochemical cycles
| Autor: | Oliver Soto-Díaz, M. Román-Aguirre, H. Romero-Paredes, Raúl E. Orozco-Mena, Víctor H. Ramos-Sánchez, Alejandro Camacho-Dávila |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Hydrogen Renewable Energy Sustainability and the Environment Thermal decomposition Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Decomposition Sulfur 0104 chemical sciences Catalysis Fuel Technology Chemical engineering chemistry Reagent Water splitting Thermochemical cycle 0210 nano-technology |
| Zdroj: | International Journal of Hydrogen Energy. 44:12309-12314 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2018.08.045 |
| Popis: | Thermochemical water splitting cycles (TWSCs) are processes with the potential for large-scale production of carbon-free hydrogen. Among these, the sulfur-family thermochemical cycles are considered the most promising due to both, the use of readily affordable chemical reagents and the temperature required to thermally decompose oxygenated sulfur compounds, which is achievable by solar means. Indeed, solar heat assisted metal sulfate decomposition is a key step, where catalysis can be employed to reduce decomposition temperature. Here we present a green route to synthesize Ag-Pd and Fe-Pd intermetallic alloy catalysts supported over γ-Al2O3 and Si-C by a microwave-assisted method using glycerol both as a solvent and as a reducing and stabilizing agent. The obtained supported catalysts were physicochemically characterized. Fe-Pd/Al2O3 catalyst exhibited the best performance, abating the zinc sulfate decomposition temperature by ca. 85 °C in comparison with other reported catalysts. |
| Databáze: | OpenAIRE |
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