Insight into the catalytic oxidation of toluene over <i>M</i>/ZSM-5 (<i>M</i>=Cu, Mn, Fe, Ce, Ti) catalysts

PENG Xin-yu; LIU Li-jun; SHEN Bo-xiong; BIAN Yao; SU Li-chao

doi:10.1016/S1872-5813(22)60069-0

Volume 51 Issue 6

Jun. 2023

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Article Navigation > Journal of Fuel Chemistry and Technology > 2023 > 51(6): 841-851

PENG Xin-yu, LIU Li-jun, SHEN Bo-xiong, BIAN Yao, SU Li-chao. Insight into the catalytic oxidation of toluene over M/ZSM-5 (M=Cu, Mn, Fe, Ce, Ti) catalysts[J]. Journal of Fuel Chemistry and Technology, 2023, 51(6): 841-851. doi: 10.1016/S1872-5813(22)60069-0

Citation:

PENG Xin-yu, LIU Li-jun, SHEN Bo-xiong, BIAN Yao, SU Li-chao. Insight into the catalytic oxidation of toluene over M/ZSM-5 (M=Cu, Mn, Fe, Ce, Ti) catalysts[J]. Journal of Fuel Chemistry and Technology, 2023, 51(6): 841-851. doi: 10.1016/S1872-5813(22)60069-0

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Insight into the catalytic oxidation of toluene over M/ZSM-5 (M=Cu, Mn, Fe, Ce, Ti) catalysts

doi: 10.1016/S1872-5813(22)60069-0

PENG Xin-yu^{1, 2
,},
LIU Li-jun^{1, 2},
SHEN Bo-xiong^{1, 2
,
,},
BIAN Yao^{1, 2},
SU Li-chao³

1.
School of Energy and Environment Engineering, Hebei University of Technology, Tianjin 300401, China
2.
Tianjin Key Laboratory of Clean Energy and Pollution Control, Tianjin 300401, China
3.
Lin Zhu (Hebei) Engineering Industry Technology Research Co. Ltd, Xingtai 054001, China

Funds: The project was supported by the Joint Funds of the National Natural Science Foundation of China (U20A20302), Innovative Group Projects in Hebei Province (E2021202006), Special Project of Science and Technology of Hebei province (20373701D), the Project of Science and Technology in the Shijiazhuang City of Hebei Province (216240117A), and Project of Great Transformation of Scientific and Technical Research in Hebei Province (21283701Z).

Received Date: 2022-08-29
Accepted Date: 2022-10-18
Rev Recd Date: 2022-10-16

Available Online: 2022-10-31

Publish Date: 2023-06-15

Abstract

Abstract

A series of metal oxide catalysts were prepared by impregnating Cu, Mn, Fe, Ce and Ti on ZSM-5 molecular sieve. The physicochemical properties of the catalysts were characterized by SEM, XRD, N₂ adsorption/desorption, XPS, H₂-TPR, and the catalytic oxidation of toluene was investigated. The results showed that Cu/ZSM-5 had rough surface, uniform distribution of metal, good pore structure, superior low-temperature reducibility and abundant adsorbed oxygen species. Cu/ZSM-5 with 5% loading exhibited excellent catalytic activity for toluene oxidation and the best sulfur resistance performance, with t₉₀ (GHSV=24000 h⁻¹) being 224 ℃ in SO₂ environment. In-situ DRIFTS experiments revealed that the degradation path of toluene was as follows: toluene was first adsorbed on the surface of the catalyst to form adsorbed toluene, then it was converted into benzaldehyde and benzoic acid successively on the catalyst. And small molecule organics such as maleic acid and carboxylic acid were formed through ring opening reaction, and finally was oxidized to CO₂ and H₂O.
- toluene,
- catalytic oxidation,
- Cu/ZSM-5

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References(44)

References

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