Synthesis of Ag/Cu3(BTC)2 composite catalysts and their catalytic performance for NH3-SCR
SHI Yong, NIU Dan-yang, WU Zhuo-min, LIU Zhen-zhen, ZHAO Qi-dong, XIONG Wei, LI Xin-yong
Key Laboratory of Industrial Ecology and Environmental Engineering(MOE) and State Key Laboratory of Fine Chemical, School of Environmental Science & Engineering, Dalian University of Technology, Dalian 116024, China
Cu3(BTC)2 catalyst loaded with Ag nanoparticles was successfully prepared through UV reduction method, and was applied for NH3-SCR reaction. The physicochemical properties of Ag/Cu3(BTC)2 catalyst were characterized by XRD, TEM and BET. It was found that Ag nanoparticles showed a pherical structure and were highly dispersed on the skeleton structure surface of Cu3(BTC)2. The synergistic effect between Ag nanoparticles and Cu-MOF could significantly improve the denitrification efficiency of Ag/Cu3(BTC)2 catalyst. The Ag/Cu3(BTC)2 catalyst with 15wt% addition achieved a 100% NO conversion rate in temperatures range from 200 to 260℃. Furthermore, the reaction mechanism was proposed on basis of the results of in situ Fourier transform infrared spectroscopy.
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