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Synthesis of Ru confined in MFI zeolites catalyst and its study on the catalytic combustion performance of propane
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Jing-jing WANG1, Liang-hui XIA1, Ya-ni WU1, Yu-jie LIU1, He XU1, Qi-yuan LIU1, Ji-chen LIU1, Yan-fei JIAN1, **, Chi HE1, 2, *
China Environmental Science | 2025, 45(1) : 58 - 65
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China Environmental Science | 2025, 45(1): 58-65
• Ozone Pollution Control •
Synthesis of Ru confined in MFI zeolites catalyst and its study on the catalytic combustion performance of propane
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Jing-jing WANG1, Liang-hui XIA1, Ya-ni WU1, Yu-jie LIU1, He XU1, Qi-yuan LIU1, Ji-chen LIU1, Yan-fei JIAN1, **, Chi HE1, 2, *
Affiliations
  • 1.State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
  • 2.National Engineering Laboratory for VOCs Pollution Control Material & Technology, Beijing 101408, China
Published: 2025-01-20
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Three Ru-based catalysts were synthesized using in-situ synthesis, impregnation, and deposition-precipitation methods in combination with MFI zeolites to investigate their catalytic oxidation activity toward propane (C3H8). The catalyst synthesized via the in-situ method, denoted as Ru@MFI, exhibited the highest low-temperature oxidation activity, achieving a 90% conversion rate at 270℃, along with remarkable thermal stability at high temperatures and hydrophobicity. Characterization techniques, including X-ray diffraction (XRD), N2 adsorption-desorption, high-angle annular dark-field scanning transmission electron microscopy(HAADF-STEM), and temperature-programmed desorption of CO (CO-TPD), revealed that Ru confined within the MFI zeolite channels possessed the smallest particle size and highest dispersion, thereby increasing the number of active Ru sites. Further characterization using Raman spectroscopy and hydrogen temperature-programmed reduction (H2-TPR) indicated that interactions between Ru and the MFI framework led to a redistribution of charge around Ru or oxygen, enhancing the reduction capabilities.Consequently, the Ru@MFI catalyst demonstrated superior propane oxidation activity. Additionally, the geometric confinement within the MFI channels maintained the stability and dispersion of Ru species during high-temperature calcination, effectively preventing Ru aggregation and further ensuring the catalyst's high-temperature thermal stability.

MFI confined noble metals  /  Ru@MFI  /  propane catalytic oxidation  /  dispersion of active sites  /  high-temperature thermal stability
Jing-jing WANG, Liang-hui XIA, Ya-ni WU, Yu-jie LIU, He XU, Qi-yuan LIU, Ji-chen LIU, Yan-fei JIAN, Chi HE. Synthesis of Ru confined in MFI zeolites catalyst and its study on the catalytic combustion performance of propane[J]. China Environmental Science, 2025 , 45 (1) : 58 -65 .
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Year 2025 volume 45 Issue 1
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  • Receive Date：2024-06-07
  • Online Date：2026-03-18
  • Published：2025-01-20
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  • Received：2024-06-07
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Affiliations
    1.State Key Laboratory of Multiphase Flow in Power Engineering, School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China
    2.National Engineering Laboratory for VOCs Pollution Control Material & Technology, Beijing 101408, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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