Energy-confined solar thermal ammonia synthesis with K/Ru/TiO2-xHx
| Autor: | Chengliang Mao, Jie Li, Linghao Yu, Lizhi Zhang, Jincai Zhao |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
business.industry
Process Chemistry and Technology chemistry.chemical_element 02 engineering and technology Electron 010402 general chemistry 021001 nanoscience & nanotechnology Solar energy Photochemistry 01 natural sciences Nitrogen Catalysis 0104 chemical sciences Renewable energy Ammonia production chemistry Thermal Photocatalysis 0210 nano-technology business General Environmental Science |
| Zdroj: | Applied Catalysis B: Environmental. 224:612-620 |
| ISSN: | 0926-3373 |
| Popis: | Haber–Bosch thermal ammonia synthesis is of energy-intensive nature. Using solar energy for ammonia synthesis is idealized for both energy and environment problems, but remains great challenges. Generally, the diffuse solar flux and inefficient utilization cannot meet the energy demand for NH3 production. Here we develop a solar thermal avenue, realizing highly efficient solar ammonia synthesis over K/Ru/TiO2-xHx. The supported Ru is efficient for nitrogen activation because of the electron donation from TiO2-xHx and free from H2 poisoning, because the interfacial TiO2-xHx accepts H atoms from Ru and then delivers them to the Ru activated N2 to form Ti-NHx (x = 1–3) even at room temperature. When only irradiated with sunlight, this catalyst absorbs sunlight in the whole UV–vis-NIR region and reaches 360 °C by its plasmonic behavior, exhibiting a Haber–Bosch thermocatalysis-comparable NH3 generation rate. This solar thermal approach with K/Ru/TiO2-xHx provides a promising renewable way for ammonia synthesis. |
| Databáze: | OpenAIRE |
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