Resource utilization of red mud with biochar to prepare high-efficiency denitration catalysts

被引:0
|
作者
Song, Bo [1 ]
Shen, Zhenxing [1 ]
Wang, Zitong [1 ]
Zhou, Guiling [1 ]
Peng, Qin [1 ]
Fan, Hao [2 ]
Liu, Jia [3 ]
机构
[1] Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian Key Lab Solid Waste Recycling & Resource Reco, Xian 710049, Peoples R China
[2] Xian Shiyou Univ, Sch Mech Engn, Xian 710065, Peoples R China
[3] Xi An Jiao Tong Univ, Instrument Anal Ctr, Xian 710049, Peoples R China
关键词
Resource utilization; Red mud; Biochar; Denitration; Coal flue gas; LOW-TEMPERATURE NH3-SCR; OXIDE CATALYSTS; REACTION-MECHANISM; FE; REDUCTION; CO; SCR; NO; PERFORMANCE; BEHAVIOR;
D O I
10.1016/j.jclepro.2025.145386
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The preparation of denitration catalyst from red mud is one of the ways to realize high value resource utilization. Currently, the main challenges in preparing denitration catalysts from RM include high calcination temperatures with long durations, complex metal loading processes, and narrow high-efficiency temperature windows. In this study, the denitration catalyst R5B5-450 was prepared using RM and biochar through acidification, grinding, and calcination. This method can effectively improve the above problems. R5B5-450 achieved over 90 % NO conversion within the temperature range of 225-400 degrees C and demonstrated significant potential for application in treating real coal-fired flue gas. This work provides a reference for the effective utilization and reduction of RM while also contributing to reducing the production cost of denitration catalysts.
引用
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页数:11
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