Removal of benzene by non-thermal plasma catalysis over manganese oxides through a facile synthesis method

Hao Guo, Xin Liu, Hajime Hojo, Xin Yao, Hisahiro Einaga, Wenfeng Shangguan

研究成果: ジャーナルへの寄稿記事

3 引用 (Scopus)

抄録

Three manganese oxide catalysts (MnO x ) were synthesized via a simple method, and then they were introduced into the non-thermal plasma (NTP) system for benzene removal. The XRD and EXAFS results showed the MnO x were mainly in the Mn 3 O 4 phase, and from the analysis of N 2 adsorption/desorption isotherms, we knew the MnO x calcined at 250 °C (Mn250) had the largest surface area of 274.5 m 2  g −1 . Besides, Mn250 also exerted higher benzene adsorption capacity (0.430 mmol g −1 ) according to C 6 H 6 -TPD. O 2 -TPD indicated that Mn250 showed better oxygen mobility than Mn300. Moreover, by analyzing XPS results, it revealed that Mn250 exhibited rich abundant of surface adsorbed oxygen species (O ads ) and moderate ratio of Mn 4+ /Mn 3+ , and the reducibility temperature was also the lowest among all the MnO x catalysts drawn by H 2 -TPR profiles. As a result, Mn250 combined with NTP could remove 96.9% of benzene at a low input power of 3 W (benzene concentration 200 ppm, and GHSV 60,000 mL g cat. −1  h −1 ), performing the best catalytic activity among the three catalysts and plasma only. Furthermore, the “NTP + Mn250” system also produced the highest CO 2 concentration and lowest CO concentration in downstream, and the residual O 3 after catalytic reaction was also the lowest, that is to say, the synergistic effect between NTP and Mn250 was more effective than other catalysts in benzene removal. [Figure not available: see fulltext.].

元の言語英語
ページ(範囲)8237-8247
ページ数11
ジャーナルEnvironmental Science and Pollution Research
26
発行部数8
DOI
出版物ステータス出版済み - 3 20 2019

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Manganese oxide
manganese oxide
catalysis
Benzene
Catalysis
benzene
Plasmas
plasma
catalyst
Catalysts
Carbon Monoxide
Temperature programmed desorption
Adsorption
Oxygen
adsorption
oxygen
X-ray spectroscopy
Isotherms
Catalyst activity
Desorption

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Pollution
  • Health, Toxicology and Mutagenesis

これを引用

Removal of benzene by non-thermal plasma catalysis over manganese oxides through a facile synthesis method. / Guo, Hao; Liu, Xin; Hojo, Hajime; Yao, Xin; Einaga, Hisahiro; Shangguan, Wenfeng.

:: Environmental Science and Pollution Research, 巻 26, 番号 8, 20.03.2019, p. 8237-8247.

研究成果: ジャーナルへの寄稿記事

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title = "Removal of benzene by non-thermal plasma catalysis over manganese oxides through a facile synthesis method",
abstract = "Three manganese oxide catalysts (MnO x ) were synthesized via a simple method, and then they were introduced into the non-thermal plasma (NTP) system for benzene removal. The XRD and EXAFS results showed the MnO x were mainly in the Mn 3 O 4 phase, and from the analysis of N 2 adsorption/desorption isotherms, we knew the MnO x calcined at 250 °C (Mn250) had the largest surface area of 274.5 m 2  g −1 . Besides, Mn250 also exerted higher benzene adsorption capacity (0.430 mmol g −1 ) according to C 6 H 6 -TPD. O 2 -TPD indicated that Mn250 showed better oxygen mobility than Mn300. Moreover, by analyzing XPS results, it revealed that Mn250 exhibited rich abundant of surface adsorbed oxygen species (O ads ) and moderate ratio of Mn 4+ /Mn 3+ , and the reducibility temperature was also the lowest among all the MnO x catalysts drawn by H 2 -TPR profiles. As a result, Mn250 combined with NTP could remove 96.9{\%} of benzene at a low input power of 3 W (benzene concentration 200 ppm, and GHSV 60,000 mL g cat. −1  h −1 ), performing the best catalytic activity among the three catalysts and plasma only. Furthermore, the “NTP + Mn250” system also produced the highest CO 2 concentration and lowest CO concentration in downstream, and the residual O 3 after catalytic reaction was also the lowest, that is to say, the synergistic effect between NTP and Mn250 was more effective than other catalysts in benzene removal. [Figure not available: see fulltext.].",
author = "Hao Guo and Xin Liu and Hajime Hojo and Xin Yao and Hisahiro Einaga and Wenfeng Shangguan",
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T1 - Removal of benzene by non-thermal plasma catalysis over manganese oxides through a facile synthesis method

AU - Guo, Hao

AU - Liu, Xin

AU - Hojo, Hajime

AU - Yao, Xin

AU - Einaga, Hisahiro

AU - Shangguan, Wenfeng

PY - 2019/3/20

Y1 - 2019/3/20

N2 - Three manganese oxide catalysts (MnO x ) were synthesized via a simple method, and then they were introduced into the non-thermal plasma (NTP) system for benzene removal. The XRD and EXAFS results showed the MnO x were mainly in the Mn 3 O 4 phase, and from the analysis of N 2 adsorption/desorption isotherms, we knew the MnO x calcined at 250 °C (Mn250) had the largest surface area of 274.5 m 2  g −1 . Besides, Mn250 also exerted higher benzene adsorption capacity (0.430 mmol g −1 ) according to C 6 H 6 -TPD. O 2 -TPD indicated that Mn250 showed better oxygen mobility than Mn300. Moreover, by analyzing XPS results, it revealed that Mn250 exhibited rich abundant of surface adsorbed oxygen species (O ads ) and moderate ratio of Mn 4+ /Mn 3+ , and the reducibility temperature was also the lowest among all the MnO x catalysts drawn by H 2 -TPR profiles. As a result, Mn250 combined with NTP could remove 96.9% of benzene at a low input power of 3 W (benzene concentration 200 ppm, and GHSV 60,000 mL g cat. −1  h −1 ), performing the best catalytic activity among the three catalysts and plasma only. Furthermore, the “NTP + Mn250” system also produced the highest CO 2 concentration and lowest CO concentration in downstream, and the residual O 3 after catalytic reaction was also the lowest, that is to say, the synergistic effect between NTP and Mn250 was more effective than other catalysts in benzene removal. [Figure not available: see fulltext.].

AB - Three manganese oxide catalysts (MnO x ) were synthesized via a simple method, and then they were introduced into the non-thermal plasma (NTP) system for benzene removal. The XRD and EXAFS results showed the MnO x were mainly in the Mn 3 O 4 phase, and from the analysis of N 2 adsorption/desorption isotherms, we knew the MnO x calcined at 250 °C (Mn250) had the largest surface area of 274.5 m 2  g −1 . Besides, Mn250 also exerted higher benzene adsorption capacity (0.430 mmol g −1 ) according to C 6 H 6 -TPD. O 2 -TPD indicated that Mn250 showed better oxygen mobility than Mn300. Moreover, by analyzing XPS results, it revealed that Mn250 exhibited rich abundant of surface adsorbed oxygen species (O ads ) and moderate ratio of Mn 4+ /Mn 3+ , and the reducibility temperature was also the lowest among all the MnO x catalysts drawn by H 2 -TPR profiles. As a result, Mn250 combined with NTP could remove 96.9% of benzene at a low input power of 3 W (benzene concentration 200 ppm, and GHSV 60,000 mL g cat. −1  h −1 ), performing the best catalytic activity among the three catalysts and plasma only. Furthermore, the “NTP + Mn250” system also produced the highest CO 2 concentration and lowest CO concentration in downstream, and the residual O 3 after catalytic reaction was also the lowest, that is to say, the synergistic effect between NTP and Mn250 was more effective than other catalysts in benzene removal. [Figure not available: see fulltext.].

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