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Constructing hollow silkworm structure in MnOx–TiO2 catalysts for improving the performance in selective catalytic reduction of NO by NH3

  • Chong Xie
  • Shenghui YangEmail author
  • Jian-Wen Shi
  • Chunming Niu
Article

Abstract

A novel MnOx–TiO2 catalyst with hollow silkworm structure was synthesized successfully via an ethanol-thermal strategy by using activated carbon fiber felt as template for the first time. The silkworm-like MnOx–TiO2 catalyst (MnTi) exhibited higher NOx conversion in the whole experimental temperature region (90–330 °C) under a high space velocity of 36,000 h−1 in comparison with the common MnOx–TiO2 catalyst without hollow silkworm structure (MnTi-B). The excellent catalytic performance of MnTi can be attributed to its high specific surface area, large content of active surface oxygen species (OS), and more surface acid sites. In addition, the MnTi catalyst also exhibited excellent resistance to water or SO2 poisoning.

Keywords

Selective catalytic reduction Hollow structure Activated carbon nanofiber Template MnOx–TiO2 

Notes

Acknowledgements

The SEM work was done at International Center for Dielectric Research (ICDR), Xi’an Jiaotong University, China; The authors also thank Ms. Yanzhu Dai for her help in using SEM.

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  1. 1.School of Materials Science & EngineeringXi’an University of TechnologyXi’anChina
  2. 2.State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical EngineeringXi’an Jiaotong UniversityXi’anChina

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