Effect of bimetallic modification on blast furnace slag and its application in low‐temperature selective catalytic reduction
- Xi'an University of Science and Technology Xi'an China, Key Laboratory of Coal Resources Exploration and Comprehensive Utilization Ministry of Natural Resources Xi'an China, Shaanxi Bo Shi Yi San New Material Environmental Protection and Technology Co. Ltd Xi'an China
- Xi'an University of Science and Technology Xi'an China
- School of Water Resources and Hydroelectric Engineering Xi'an University of Technology Xi'an China
- China National Heavy Machinery Research Institute Co. Ltd Xi'an China
Abstract Objective In order to control NO x in low‐temperature flue gases emitted from non‐power industries and to reduce the preparation cost of denitration catalysts, this study uses inexpensive blast furnace slag as raw material to prepare denitration catalysts. Methods After cooling, drying and grinding, the blast furnace slag becomes a powder with considerable fineness and meets the requirements of activity index, which is called GGBS (ground granulated blast furnace slag). Using GGBS as denitration catalyst carrier, the active components M (M = Fe, Co, Ni, Cu and Ce) are loaded on Mn‐based GGBS catalyst using an impregnation method. Conclusions The effect of different active components on the denitration performance and sulfur resistance of Mn‐based GGBS catalysts is investigated. The results show that the Mn‐Ce/GGBS catalyst has better denitration performance and sulfur resistance. The Mn‐Ce/GGBS catalyst has a significant denitration performance when load ratio is 2:1. The active component Ce improves the denitration performance of the catalyst, reduces sulfur poisoning and extends the life of the catalyst. The SO 2 in the flue gas increases the acid sites on the catalyst surface and improves catalyst activity. The larger the ratios of Mn 4+ /Mn 3+ , Ce 4+ /Ce 3+ and O α /O β , the stronger the catalyst activity and the better the denitration performance. © 2022 Society of Chemical Industry (SCI).
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 1908382
- Journal Information:
- Journal of Chemical Technology and Biotechnology, Journal Name: Journal of Chemical Technology and Biotechnology Journal Issue: 4 Vol. 98; ISSN 0268-2575
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- United Kingdom
- Language:
- English
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