Deposition of Selective Catalytic Reduction Coating on Wire-Mesh Structure by Atmospheric Plasma Spraying

Xiaoyu Ma; Yunlong Ma; Hui Li; Yingliang Tian

doi:10.3390/ma12183046

Deposition of Selective Catalytic Reduction Coating on Wire-Mesh Structure by Atmospheric Plasma Spraying

Materials (Basel). 2019 Sep 19;12(18):3046. doi: 10.3390/ma12183046.

Authors

Xiaoyu Ma¹, Yunlong Ma², Hui Li³, Yingliang Tian⁴

Affiliations

¹ College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China. maxiaoyu@bjut.edu.cn.
² College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China. ddt753@sina.cn.
³ College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China. hui.li@bjut.edu.cn.
⁴ College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China. tianyl@bjut.edu.cn.

Abstract

A series of catalytic coatings consisting of MnO_x-CeO₂ and TiO₂ support were prepared by atmospheric plasma spraying, which was aimed at the application of selective catalytic reduction (SCR) of NO_x. The effect of the load of active component on the coating was firstly studied. The results showed that all the coating presented the highest catalytic activity at approximately 350 °C and the coating with the composition of 20MnO_x/5CeO₂/TiO₂ (wt%) achieved the most powerful performance. The coating was then prepared on a wire-mesh structure substrate, which can be easily assembled as a gas filter. The results showed that the specific surface area was greatly increased resulting in the significant improvement of the catalytic activity of the coating. This strategy offered a promising possibility of removing NO_x and particulate fliting simultaneously in industrial applications.

Keywords: Mn-Ce-Ti mixed oxides; atmospheric plasma spray; selective catalytic reduction; wire-mesh structure.

Grants and funding

51271007/National Natural Science Foundation of China