期刊
MICROPOROUS AND MESOPOROUS MATERIALS
卷 305, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.micromeso.2020.110292
关键词
ZSM-5; Nanozeolite; Pt; Toluene; Catalytic combustion
类别
资金
- National Key R&D program of China [2017YFE0127400]
- Natural Science Foundation of Hubei Province [2019CFA070]
- Opening Project of Hubei Key Laboratory of Processing and Application of Catalytic Materials [201829103]
- Program for Huazhong University of Science and Technology (HUST) Academic Frontier Youth Team [2018QYTD03]
In this study, the Pt-loaded ellipsoidal nanozeolite (Pt/ZSM-5-OS) was successfully synthesized by the mercaptosilane modification assisted Pt dispersion method and investigated for the catalytic combustion of toluene, which was used as a model compound of volatile organic compounds (VOCs). The catalytic activity evaluation showed that Pt/ZSM-5-OS exhibited an excellent activity in toluene catalytic combustion, with 90% conversion (T-90) occurring at just 164 degrees C. The catalytic activity was much higher than the catalyst prepared by traditional impregnation method (Pt/ZSM-5-IM, T-90 = 196 degrees C). In addition, the excellent properties of anti-water vapor and catalytic stability were observed for Pt/ZEM-5-OS. The as-prepared catalysts were characterized by X-ray diffraction (XRD), N-2 physisorption, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). Characterization of the as-prepared catalysts demonstrated that the enhanced catalytic performance was related to the improved Pt dispersion and higher Pt-0 proportion of Pt-ZSM-5-OS. Hence, Pt/ZSM-5-OS and its preparation method are attractive for the practical VOCs catalytic combustion.
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