Modified fly ash from municipal solid waste incineration as catalyst support for Mn-Ce composite oxides

2nd International Conference on Materials Science, Energy Technology and Environmental Engineering

材料科学;能源学;生态环境科学

Chen, Xiongbo^1,2 ; Liu, Ying^1,2 ; Yang, Ying^1,2 ; Ren, Tingyan^1,2 ; Pan, Lang^1,2 ; Fang, Ping^1,2 ; Chen, Dingsheng^1,2 ; Cen, Chaoping^1,2

South China Institute of Environmental Sciences, Ministry of Environmental Protection of PRC, No. 7 West Street, Yuancun, Guangzhou

510655, China^1

Key Laboratory of Water and Air Pollution Control of Guangdong Province, West Street No. 7, Yuancun, Guangzhou

510655, China^2

关键词: Composite oxide;    Hydrothermal treatments;    Large surface area;    Modified fly ash;    New approaches;    Physical and chemical properties;    Resource utilizations;    Value added products;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/81/1/012146/pdf
DOI  :  10.1088/1755-1315/81/1/012146

来源: IOP

【 摘 要 】

Fly ash from municipal solid waste incineration was modified by hydrothermal treatment and used as catalyst support for Mn-Ce composite oxides. The prepared catalyst showed good activity for the selective catalytic reduction (SCR) of NO by NH3. A NO conversion of 93% could be achieved at 300 °C under a GHSV of 32857 h-1. With the help of characterizations including XRD, BET, SEM, TEM, XPS and TPR, it was found that hydrothermal treatment brought a large surface area and abundant mesoporous to the modified fly ash, and Mn-Ce composite oxides were highly dispersed on the surface of the support. These physical and chemical properties were the intrinsic reasons for the good SCR activity. This work transformed fly ash into high value-added products, providing a new approach to the resource utilization and pollution control of fly ash.