期刊
CATALYSIS TODAY
卷 264, 期 -, 页码 23-30出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cattod.2015.08.024
关键词
Formaldehyde; Catalytic oxidation; Pt; ZnO; TiO2 nanotube; In-situ DRIFTS
资金
- National Natural Science Foundation of China [21576298, 21425627]
- Science and Technology Plan Project [20138090500029]
- Natural Science Foundation of Guangdong Province [2014A030313135, 2014A030308012]
- Guangdong Technology Research Center and Separation of Thermosensitive Chemicals
- open subject of the key supported disciplines of Guangzhou chemical engineering and technology
Highly-ordered pore-through TiO2 nanotube arrays (TiNT) are modified with ZnO and then used as the support for a Pt/ZnO/TiNT catalyst. The Pt/ZnO/TiNT is applied to the trace HCHO oxidation under mild conditions. In comparison with the Pt/TiNT without ZnO modification, monolith-like Pt/ZnO/TiNT shows higher activity under parallel preparation and test conditions. A HCHO conversion of 95% with more than 100 h stable performance is achieved over 0.2 wt.% Pt/ZnO/TiNT at 30 degrees C. The effect of ZnO modification on the structural properties and catalytic performance of Pt/ZnO/TiNT are investigated. The superior performances are related to the enhanced HCHO storage capacity of ZnO/TiNT support, the specific monolith-like structure and the modified metal-support interaction in Pt/ZnO/TiNT. (C) 2015 Elsevier B.V. All rights reserved.
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