Study on the denitrification performance of FeLaO/activated coke for NH-SCR and the effect of CO escaped from activated coke at mid-high temperature on catalytic activity
Environmental Science and Pollution Research, ISSN: 1614-7499, Vol: 26, Issue: 20, Page: 20248-20263
2019
- 16Citations
- 12Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Metrics Details
- Citations16
- Citation Indexes16
- 16
- CrossRef2
- Captures12
- Readers12
- 12
Article Description
Currently, activated coke is widely used in the removal of multiple pollutants from industrial flue gas. In this paper, a series of novel FeLaO/AC catalysts was prepared by the incipient wetness impregnation for NH-SCR denitrification reaction. The introduction of Fe-La bimetal oxides significantly improved the denitrification performance of activated coke at mid-high temperature, and 4% FeLaO/AC exhibited a superior NO conversion efficiency of 90.1% at 400 °C. The catalysts were further characterized by BET, SEM, XRD, Raman, EPR, XPS, FTIR, NH-TPD, H-TPR, et al., whose results showed that the perovskite-type oxide of LaFeO and oxygen vacancies were produced on the catalysts’ surfaces during roasting. Fe-La doping enhanced the amount of acid sites (mainly Lewis and other stronger acid sites) and the content of multifarious oxygen species, which were beneficial for NO removal at mid-high temperature. Moreover, it was investigated that the effect of released CO from activated coke at mid-high temperature on the NO removal through the lifetime test, in which it was found that a large amount of CO produced by pyrolysis of activated coke could promote the NO removal, and long-term escaping of CO on the activated coke carrier did not have a significant negative impact on catalytic performance. The results of the TG-IR test showed that volatile matter is released from the activated coke while TG results showed that the weight loss rate of 4% FeLaO/AC only was 0.0015~0.007%/min at 300–400 °C. Hence, 4% FeLaO/AC had excellent thermal stability and denitrification performance to be continuously used at mid-high temperature. Finally, the mechanisms were proposed on the basis of experiments and characterization results.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85066031668&origin=inward; http://dx.doi.org/10.1007/s11356-019-05090-5; http://www.ncbi.nlm.nih.gov/pubmed/31098908; http://link.springer.com/10.1007/s11356-019-05090-5; https://dx.doi.org/10.1007/s11356-019-05090-5; https://link.springer.com/article/10.1007/s11356-019-05090-5
Springer Science and Business Media LLC
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