中南大学
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返回首页Low platinum alloy catalyst PtCo3 obtaining high catalytic activity and stability with great water and CO2 resistance for catalytic oxidation of toluene
发布时间：2024-09-30
点击次数：
- DOI码：
- 10.1016/j.fuel.2021.121794
- 所属单位：
- 中南大学
- 发表刊物：
- Fuel
- 关键字：
- Excellent water vapor resistance; PtCo3 catalysts; The Arrhenius model; Theoretical calculations; Toluene oxidation
- 摘要：
- The PtCo3 nanoparticles (NPs of 2–5 nm) were synthesized by the organic phase reduction method and the PtCo3-C samples were obtained by physically loading the bimetallic NPs on the carbon black. The catalytic activity and stability of PtCo3-C for toluene oxidation under different reaction conditions were studied. The PtCo3-C can completely oxidize and decompose 1000 ppm toluene at 238 ℃ for at least 120 h, which has excellent low-temperature catalytic activity and thermal stability. In addition, PtCo3-C displays a great water and CO2 resistance when 3.5 to 20 vol% water vapor (at least 110 h) or 3.5 to 10 vol% CO2 (at least 60 h) is introduced into the reaction gas at 238 ℃. Moreover, the adsorption energy of toluene (−73.68 kJ mol−1) is much higher than that of water (−24.5 kJ mol−1) and CO2 (−37.56 kJ mol−1), which were calculated by the density functional theory (DFT). Furthermore, catalytic mechanism of the oxidation of toluene over the PtCo3-C catalyst was also proposed. This study presents a good catalyst candidate obtaining high catalytic activity and stability with great water and CO2 resistance for the removal of toluene.
- 论文类型：
- 期刊论文
- 论文编号：
- 121794
- 卷号：
- 307
- ISSN号：
- 00162361
- 是否译文：
- 否
- 发表时间：
- 2022-01-01
- 收录刊物：
- SCI