SELECTIVE CATALYTIC OXIDATION PERFORMANCE OF N-BUTYLAMINE OVER Cu-ZSM-5 CATALYSTS WITH DIFFERENT COPPER LOADINGS

XING Xin; LI Na; CHENG Jie

doi:10.13205/j.hjgc.202203009

Volume 40 Issue 3

Mar. 2022

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XING Xin, LI Na, CHENG Jie. SELECTIVE CATALYTIC OXIDATION PERFORMANCE OF N-BUTYLAMINE OVER Cu-ZSM-5 CATALYSTS WITH DIFFERENT COPPER LOADINGS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(3): 51-58. doi: 10.13205/j.hjgc.202203009

Citation:

XING Xin, LI Na, CHENG Jie. SELECTIVE CATALYTIC OXIDATION PERFORMANCE OF N-BUTYLAMINE OVER Cu-ZSM-5 CATALYSTS WITH DIFFERENT COPPER LOADINGS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(3): 51-58. doi: 10.13205/j.hjgc.202203009

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SELECTIVE CATALYTIC OXIDATION PERFORMANCE OF N-BUTYLAMINE OVER Cu-ZSM-5 CATALYSTS WITH DIFFERENT COPPER LOADINGS

doi: 10.13205/j.hjgc.202203009

XING Xin¹,
LI Na²,
CHENG Jie^{2
,
,}

1. College of Environmental Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China;
2. National Engineering Laboratory for VOCs Pollution Control Material&Technology, Research Center for Environmental Material and Pollution Control Technology, University of Chinese Academy of Sciences, Beijing 101408, China

Received Date: 2021-07-28
Available Online: 2022-07-07

Abstract

Abstract

A series of Cu-ZSM-5 catalysts with different Cu loadings (1%, 2%, 5% and 10%) were synthesized by equal volume impregnation method, and the effect of Cu loading on n-butylamine catalytic oxidation was investigated. The crystal structure and physicochemical properties of the catalysts were characterized by XRD, N₂ adsorption desorption, EPR, H₂-TPR and NH₃-TPD, and the structure-activity relationship was studied. The catalyst with Cu loading of 10% had the highest catalytic activity, and the complete conversion of n-butylamine was achieved at 300℃. The catalyst with 5% Cu loading had the best N₂ selectivity, and the N₂ selectivity at low temperature was significantly higher than that of the other catalysts. The characterization results showed that the redox performance of the catalyst mainly affected the n-butylamine conversion, the different Cu loading affected the redox performance of the catalyst materials, and the catalyst with higher Cu loading had excellent redox performance. The high N₂ selectivity could be attributed to the isolated Cu²⁺ species and the weak acid sites of the catalyst, which was conducive to the adsorption activation and deep oxidation of n-butylamine to form N₂.
- n-butylamine,
- selective catalytic oxidation,
- Cu-ZSM-5 catalyst,
- copper species,
- acidity

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References(32)

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