Fe2O3-TiO2-MnO2/Al2O3催化臭氧化催化剂的制备及表征

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Abstract The Fe₂O₃-TiO₂-MnO₂/Al₂O₃ oxide catalyst was prepared by the dipping-calcination method using A1₂O₃ as a carrier. SEM, EDX, BET and XRD techniques were performed to characterize the catalyst. The catalytic activity of the prepared catalyst was investigated by catalytic ozonation of the effluent in sewage plant of chemical industry park at room temperature and atmospheric pressure. The results showed that the optimal preparation parameters were as follow: the molar ratio of Ti⁴⁺, Mn²⁺ and Fe³⁺ in the dipping solution was 2:2:1, calcination time and temperature 4h and 500℃ respectively. Furthermore, the degradation performance obtained for COD in wastewater showed that the catalytic activity of Fe₂O₃-TiO₂-MnO₂/Al₂O₃ catalyst was good when amount of ozone was 50mg·L^-1 and filling ratio of catalyst was 50%, it could be removed 52.2% of COD after 60min oxidation. Three-dimensional fluorescence spectra showed that visible humus and UV humus in the wastewater were completely degraded after catalytic ozonation, and a small amount of fulvic was generated.

Key words： gels infiltration catalyst catalytic ozonation chemical wastewater

Received: 18 February 2016

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	Articles by authors
	ZHANG Yao-hui
	TU Yong
	TANG Min
	XU Jun
	LIU Wei-jin
	WU Qian
	CHEN Yong
	LI Jun

Cite this article:

ZHANG Yao-hui,TU Yong,TANG Min等. Preparation and characterization of Fe₂O₃-TiO₂-MnO₂/Al₂O₃ catalysts[J]. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(10): 3003-3009.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2016/V36/I10/3003

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