Biomass-derived activated carbon supported potassium catalyst for reduction of NO<sub><i>x</i></sub> in excess oxygen with higher selectivity

SHU Yun; ZHANG Fan; WANG Fan; WANG Hong-mei; WANG Hong-chang

Volume 45 Issue 6

Jun. 2017

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Article Navigation > Journal of Fuel Chemistry and Technology > 2017 > 45(6): 747-754

SHU Yun, ZHANG Fan, WANG Fan, WANG Hong-mei, WANG Hong-chang. Biomass-derived activated carbon supported potassium catalyst for reduction of NOx in excess oxygen with higher selectivity[J]. Journal of Fuel Chemistry and Technology, 2017, 45(6): 747-754.

Citation:

SHU Yun, ZHANG Fan, WANG Fan, WANG Hong-mei, WANG Hong-chang. Biomass-derived activated carbon supported potassium catalyst for reduction of NO_x in excess oxygen with higher selectivity[J]. Journal of Fuel Chemistry and Technology, 2017, 45(6): 747-754.

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Biomass-derived activated carbon supported potassium catalyst for reduction of NO_x in excess oxygen with higher selectivity

Research Center of Air Pollution Control Technology, Chinese Research Academy of Environmental Sciences, Beijing 100012, China

Funds:

the National Natural Science Foundation of China 21507119

the Key Technology Research and Development Program of Qinghai Province 2012-J-144

Received Date: 2017-01-24
Rev Recd Date: 2017-03-31

Available Online: 2021-01-23

Publish Date: 2017-06-10

Abstract

Abstract

The selective reduction of NO in an oxygen-rich environment with biomass-derived activated carbon supported potassium catalyst was investigated. The. results show that in comparison with coal (lignite) based activated carbon supported potassium catalyst, biomass (sawdust) based activated carbon supported potassium catalyst exhibits a high selectivity for the reduction of NO_x to N₂, keeping a high and stable activity with NO reduction of about 80% during 2 h-isothermal experiment as well as a relatively low activity with the oxygen-carbon reaction of 18%. XRD, BET, XPS and TPD results indicate that the excellent catalytic performance of the biomass-derived activated carbon supported potassium catalyst is associated with the highly dispersion of active potassium species, which might result from the high surface area and the large amount of surface oxygen groups. Furthermore, the selective emission of CO₂ with regard to CO is an additional benefit of using biomass-derived activated carbon as the support for NO reduction.
- NO reduction,
- biomass carbon,
- selective,
- catalyst

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References(27)

References

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