Efficient selective catalytic reduction of NO by novel carbon-doped metal catalysts made from electroplating sludge

Zhang, Jia, Zhang, Jingyi, Xu, Yunfeng, Su, Huimin, Li, Xiaoman, Zhou, Ji Zhi, Qian, Guangren, Li, Li and Xu, Zhi Ping (2014) Efficient selective catalytic reduction of NO by novel carbon-doped metal catalysts made from electroplating sludge. Environmental Science and Technology, 48 19: 11497-11503. doi:10.1021/es502391y


Author Zhang, Jia
Zhang, Jingyi
Xu, Yunfeng
Su, Huimin
Li, Xiaoman
Zhou, Ji Zhi
Qian, Guangren
Li, Li
Xu, Zhi Ping
Title Efficient selective catalytic reduction of NO by novel carbon-doped metal catalysts made from electroplating sludge
Journal name Environmental Science and Technology   Check publisher's open access policy
ISSN 0013-936X
1520-5851
Publication date 2014-10-07
Year available 2014
Sub-type Article (original research)
DOI 10.1021/es502391y
Open Access Status
Volume 48
Issue 19
Start page 11497
End page 11503
Total pages 7
Place of publication Washington, DC United States
Publisher American Chemical Society
Collection year 2015
Language eng
Formatted abstract
Electroplating sludges, once regarded as industrial wastes, are precious resources of various transition metals. This research has thus investigated the recycling of an electroplating sludge as a novel carbon-doped metal (Fe, Ni, Mg, Cu, and Zn) catalyst, which was different from a traditional carbon-supported metal catalyst, for effective NO selective catalytic reduction (SCR). This catalyst removed >99.7% NO at a temperature as low as 300 °C. It also removed NO steadily (>99%) with a maximum specific accumulative reduced amount (MSARA) of 3.4 mmol/g. Gas species analyses showed that NO removal was accompanied by evolving N2 and CO2. Moreover, in a wide temperature window, the sludge catalyst showed a higher CO2 selectivity (>99%) than an activated carbon-supported metal catalyst. Structure characterizations revealed that carbon-doped metal was transformed to metal oxide in the sludge catalyst after the catalytic test, with most carbon (2.33 wt %) being consumed. These observations suggest that NO removal over the sludge catalyst is a typical SCR where metals/metal oxides act as the catalytic center and carbon as the reducing reagent. Therefore, our report probably provides an opportunity for high value-added utilizations of heavy-metal wastes in mitigating atmospheric pollutions.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2015 Collection
Australian Institute for Bioengineering and Nanotechnology Publications
 
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