期刊
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
卷 57, 期 44, 页码 14967-14976出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.iecr.8b03432
关键词
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资金
- National Key R&D Program of China [2016YFC0205900]
- National Natural Science Foundation of China [21503106, 21566022, 21773106]
- Natural Science Foundation of Jiangxi Province [20171BCB23016, 20171BAB203024]
- Foundation of State Key Laboratory of High-efficiency Utilization of Coal & Green Chemical Engineering [2016-15]
- Jiangxi Province graduate special fund for innovation [YC-2017-S050]
Cu-containing zeolites are often synthesized by two methods: ion exchange or one-pot synthesis. The former contains zeolite synthesis and ion exchange in two steps. For the latter method, the synthesis of Cu based zeolites is more convenient. However, the Cu content is very difficult to control. In this work, we developed a facile one pot dual-template strategy to design and synthesize Cu-ZSM-5-D catalysts in order to achieve better ammonia selective catalytic reduction (NH3-SCR) performance, compared with Cu/ZSM-5 synthesized via a traditional ion exchange method. Furthermore, the directly synthesized Cu-ZSM-5-D performs with better hydrothermal stability and sulfur resistance. The Si/Al atomic ratio, most importantly, the Cu content can be conveniently controlled by changing the addition of Cu precursors. The reaction mechanism was also revealed through the in situ diffuse reflectance infrared Fourier transform (DRIFT) technique in detail. The one-pot dual-template method adopted in this work may be applied for other high-performance Cu based zeolites for removal of nitrogen oxides.
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