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author:

Chen, J. (Chen, J..) [1] | Zheng, Y.-Y. (Zheng, Y.-Y..) [2] | Zhang, Y.-B. (Zhang, Y.-B..) [3] | Zou, H.-Q. (Zou, H.-Q..) [4] | Lu, X.-L. (Lu, X.-L..) [5]

Indexed by:

Scopus PKU CSCD

Abstract:

Pristine multiwalled carbon nanotubes (MWCNTs) were modified by sodium dodecyl sulfate (SDS). Afterwards, a series of MnO2/MWCNTs were prepared via a redox method and used in selective catalytic reduction (SCR) of NOx at 80-180℃. Structural properties and catalytic performance were investigated by specific surface area measurements (BET), X-ray diffraction (XRD), filed emission scanning electron microscope (FESEM), transmission electron microscope (TEM), X-ray photoelectron spectroscope (XPS), and H2 temperature-programmed reduction (H2-TPR). The characterization results indicate that the nanoflaky MnO2 highly disperse on MWCNTs. The results show that the low-temperature SCR activities of MnO2/MWCNTs catalysts are 85%-100% at 140-180℃ at a weight hourly space velocity of 210 L/(gcat·h), higher than that of catalyst fabricated via the wet impregnation method. The 10% MnO2/MWCNTs catalyst displays first-rate SCR activity, which is attributed to its low crystallinity, high concentrations of Mn4+ and oxygen absorbtion onto the catalyst surface, as well as excellent reducibility. Additionally, compared to the MnOx/MWCNTs catalyst, the 10% MnO2/MWCNTs catalyst exhibits higher resistance to H2O and SO2. © 2016, Science Press. All right reserved.

Keyword:

Manganese oxide; Multi-walled carbon nanotube; Nitrogen oxide; Selective catalytic reduction; Sodium dodecyl sulfate

Community:

  • [ 1 ] [Chen, J.]College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
  • [ 2 ] [Zheng, Y.-Y.]College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
  • [ 3 ] [Zhang, Y.-B.]College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
  • [ 4 ] [Zou, H.-Q.]College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
  • [ 5 ] [Lu, X.-L.]College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China

Reprint 's Address:

  • [Zheng, Y.-Y.]College of Materials Science and Engineering, Fuzhou UniversityChina

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Source :

Journal of Inorganic Materials

ISSN: 1000-324X

Year: 2016

Issue: 12

Volume: 31

Page: 1347-1354

0 . 4 4 4

JCR@2016

1 . 7 0 0

JCR@2023

ESI HC Threshold:324

JCR Journal Grade:4

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 3

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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