THE ACTIVE SITES AND PERFORMANCE OF Mn1Cex/HZSM-5 CATALYST FOR FORMALDEHYDE REMOVAL AT ROOM TEMPERATURE

FAN Hao; SHEN Zhen-xing; LU Jia-qi; CHANG Tian; HUANG Yu

doi:10.13205/j.hjgc.202106015

Volume 39 Issue 6

Jan. 2022

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2021 > 39(6): 99-105

FAN Hao, SHEN Zhen-xing, LU Jia-qi, CHANG Tian, HUANG Yu. THE ACTIVE SITES AND PERFORMANCE OF Mn1Cex/HZSM-5 CATALYST FOR FORMALDEHYDE REMOVAL AT ROOM TEMPERATURE[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(6): 99-105. doi: 10.13205/j.hjgc.202106015

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FAN Hao, SHEN Zhen-xing, LU Jia-qi, CHANG Tian, HUANG Yu. THE ACTIVE SITES AND PERFORMANCE OF Mn₁Ce_x/HZSM-5 CATALYST FOR FORMALDEHYDE REMOVAL AT ROOM TEMPERATURE[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(6): 99-105. doi: 10.13205/j.hjgc.202106015

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THE ACTIVE SITES AND PERFORMANCE OF Mn₁Ce_x/HZSM-5 CATALYST FOR FORMALDEHYDE REMOVAL AT ROOM TEMPERATURE

doi: 10.13205/j.hjgc.202106015

1. School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
2. Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China

Received Date: 2020-09-22
Available Online: 2022-01-18

Abstract

Abstract

Formaldehyde caused by indoor decoration has serious impact on human health, the need to reduce formaldehyde at room temperature is increasingly urgent. At present, room temperature catalytic oxidation is regarded as one of the most promising formaldehyde treatment methods. Zeolite molecular sieve has a large specific surface area and more adsorption sites. In this paper, with zeolite molecular sieve as the carrier, and MnO_x and CeO_x as reaction active sites, Mn₁Ce_x/HZSM-5 catalyst was successfully synthesized through co-precipitation method. The catalyst degraded 96.86% of formaldehyde at room temperature and had good working stability. In addition, through a series of physical and chemical characterization analysis, it was found that Ce species could not only significantly improve the content of high-valent manganese in the catalyst, but also bring more surface hydroxyl and oxygen adsorption, thus improving the performance of the catalyst. In view of its excellent and stable performance and simple synthesis method, this highly efficient formaldehyde removal catalyst, Mn₁Ce_x/HZSM-5 could provide a novel reference for the synthesis of formaldehyde removal catalyst at room temperature.
- molecular sieve,
- catalytic oxidation,
- bimetal catalyst,
- indoor air pollution

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References(26)

References

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