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摘要
Low-temperature catalyst is the key to CO-selective catalytic reduction (CO-SCR). Cu1/6-MOF-5 catalyst was successfully synthesized by one-step solvothermal method. X-ray diffractometer (XRD), scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy (Raman) and X-ray photoelectron spectroscopy (XPS) were used to characterize the structure of the catalysts. The results show that the doped Cu exists in +1 and +2 valence states and partially replaces the Zn site in MOF-5 to form the bimetallic organic framework Cu1/6-MOF-5. At the same time, the Cu doping increases the concentration of oxygen vacancies, so that the catalyst has higher catalytic activity. Specifically, the denitrification rate of Cu1/6-mof-5 catalyst increases from 32% to 89% at 160 ℃ and from 70% to 95 % at 200 ℃. Even in the sulfur-containing environment, the NO conversion rate can still reach 87% at 200 ℃. ? 2022, China Science Publishing & Media Ltd. All right reserved.
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