Catalytic Removal of Benzene at Mild Temperature over Manganese Oxide Catalysts

Hao Guo, Zhixiang Zhang, Hajime Hojo, Mingxia Chen, Hisahiro Einaga, Wenfeng Shangguan

研究成果: ジャーナルへの寄稿記事

抄録

Series of MnO x catalysts were synthesized through oxalate route and calcined at facile temperatures. Characterizations through XRD, N 2 -adsorption/desorption, HRTEM, C 6 H 6 -TPD, O 2 -TPD, XPS, and H 2 -TPR revealed that MnO x calcined at 250 °C (N250) with a main crystal phase of Mn 2 O 3 showed micro-mesopores and largest specific surface area, and therefore had a high adsorption capacity of C 6 H 6 . N250 also presented better oxygen mobility, rich surface adsorbed oxygen species (O ads ), and proper ratio of surface Mn 4+ /Mn 3+ . The starting temperature of H 2 -TPR of N250 was the lowest among the obtained MnO x samples. As a result, N250 exhibited the lowest T 90 value of 191 °C in C 6 H 6 thermal catalytic oxidation (WHSV 60,000 mL g cat . −1  h −1 , initial C 6 H 6 concentration 190 ppm) among all the catalysts, and this T 90 value is lower than those reported in many research. At last, a potential reaction pathway was proposed according to the results of in-situ FTIR measurement.

元の言語英語
ジャーナルCatalysis Surveys from Asia
DOI
出版物ステータス出版済み - 1 1 2019

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Manganese oxide
Temperature programmed desorption
Benzene
Oxygen
Adsorption
Catalysts
Oxalates
Catalytic oxidation
Specific surface area
Desorption
X ray photoelectron spectroscopy
Temperature
Crystals
manganese oxide
Hot Temperature

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

これを引用

Catalytic Removal of Benzene at Mild Temperature over Manganese Oxide Catalysts. / Guo, Hao; Zhang, Zhixiang; Hojo, Hajime; Chen, Mingxia; Einaga, Hisahiro; Shangguan, Wenfeng.

:: Catalysis Surveys from Asia, 01.01.2019.

研究成果: ジャーナルへの寄稿記事

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abstract = "Series of MnO x catalysts were synthesized through oxalate route and calcined at facile temperatures. Characterizations through XRD, N 2 -adsorption/desorption, HRTEM, C 6 H 6 -TPD, O 2 -TPD, XPS, and H 2 -TPR revealed that MnO x calcined at 250 °C (N250) with a main crystal phase of Mn 2 O 3 showed micro-mesopores and largest specific surface area, and therefore had a high adsorption capacity of C 6 H 6 . N250 also presented better oxygen mobility, rich surface adsorbed oxygen species (O ads ), and proper ratio of surface Mn 4+ /Mn 3+ . The starting temperature of H 2 -TPR of N250 was the lowest among the obtained MnO x samples. As a result, N250 exhibited the lowest T 90 value of 191 °C in C 6 H 6 thermal catalytic oxidation (WHSV 60,000 mL g cat . −1  h −1 , initial C 6 H 6 concentration 190 ppm) among all the catalysts, and this T 90 value is lower than those reported in many research. At last, a potential reaction pathway was proposed according to the results of in-situ FTIR measurement.",
author = "Hao Guo and Zhixiang Zhang and Hajime Hojo and Mingxia Chen and Hisahiro Einaga and Wenfeng Shangguan",
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AU - Guo, Hao

AU - Zhang, Zhixiang

AU - Hojo, Hajime

AU - Chen, Mingxia

AU - Einaga, Hisahiro

AU - Shangguan, Wenfeng

PY - 2019/1/1

Y1 - 2019/1/1

N2 - Series of MnO x catalysts were synthesized through oxalate route and calcined at facile temperatures. Characterizations through XRD, N 2 -adsorption/desorption, HRTEM, C 6 H 6 -TPD, O 2 -TPD, XPS, and H 2 -TPR revealed that MnO x calcined at 250 °C (N250) with a main crystal phase of Mn 2 O 3 showed micro-mesopores and largest specific surface area, and therefore had a high adsorption capacity of C 6 H 6 . N250 also presented better oxygen mobility, rich surface adsorbed oxygen species (O ads ), and proper ratio of surface Mn 4+ /Mn 3+ . The starting temperature of H 2 -TPR of N250 was the lowest among the obtained MnO x samples. As a result, N250 exhibited the lowest T 90 value of 191 °C in C 6 H 6 thermal catalytic oxidation (WHSV 60,000 mL g cat . −1  h −1 , initial C 6 H 6 concentration 190 ppm) among all the catalysts, and this T 90 value is lower than those reported in many research. At last, a potential reaction pathway was proposed according to the results of in-situ FTIR measurement.

AB - Series of MnO x catalysts were synthesized through oxalate route and calcined at facile temperatures. Characterizations through XRD, N 2 -adsorption/desorption, HRTEM, C 6 H 6 -TPD, O 2 -TPD, XPS, and H 2 -TPR revealed that MnO x calcined at 250 °C (N250) with a main crystal phase of Mn 2 O 3 showed micro-mesopores and largest specific surface area, and therefore had a high adsorption capacity of C 6 H 6 . N250 also presented better oxygen mobility, rich surface adsorbed oxygen species (O ads ), and proper ratio of surface Mn 4+ /Mn 3+ . The starting temperature of H 2 -TPR of N250 was the lowest among the obtained MnO x samples. As a result, N250 exhibited the lowest T 90 value of 191 °C in C 6 H 6 thermal catalytic oxidation (WHSV 60,000 mL g cat . −1  h −1 , initial C 6 H 6 concentration 190 ppm) among all the catalysts, and this T 90 value is lower than those reported in many research. At last, a potential reaction pathway was proposed according to the results of in-situ FTIR measurement.

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