Novel metallic electrically heated monolithic catalysts towards VOC combustion
| Autor: | Wang Yue, Xiaonian Li, Ying Zhou, Yinfei Chen, Xiao Chen, Li Hao, Hanfeng Lu, Anming Zhu, Qiulian Zhu |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
010405 organic chemistry Thermal treatment engineering.material 010402 general chemistry Combustion 01 natural sciences Toluene Catalysis 0104 chemical sciences Metal chemistry.chemical_compound Thermal conductivity chemistry Coating Chemical engineering visual_art engineering visual_art.visual_art_medium Space velocity |
| Zdroj: | Catalysis Science & Technology. 9:6638-6646 |
| ISSN: | 2044-4761 2044-4753 |
| Popis: | The development of metallic monolithic catalysts with various morphologies to catalyze rapid combustion of volatile organic compounds (VOCs) under high space velocity is a profound challenge in catalyst research. Herein, we reported the preparation of novel electrically heated monolithic Pt and Pd catalysts supported on an FeCrAl metal wire. The catalysts exhibited high catalytic activity for the VOC combustion to CO2 and H2O under low-current DC power. Notably, the catalysts exhibited nearly 100% toluene and ethyl acetate conversion rates under a DC power of 5 W and 8 W and a space velocity of 30 000 mL h−1 g−1 with a combustion response time of less than 30 s. The exceptional activity of the catalysts can be attributed to a well-adhered alumina coating that formed on the surface of the FeCrAl metallic substrate after thermal treatment and highly dispersed Pt and Pd nanoparticles on the surface of an alumina coating. Meanwhile, surface temperature can instantly reach the desired ignition point, because of high thermal conductivity and electrical conductivity. |
| Databáze: | OpenAIRE |
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