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

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 3046 ◽  
Author(s):  
Xiaoyu Ma ◽  
Yunlong Ma ◽  
Hui Li ◽  
Yingliang Tian
Keyword(s):  
Catalytic Activity ◽  
Selective Catalytic Reduction ◽  
Plasma Spraying ◽  
Catalytic Reduction ◽  
Industrial Applications ◽  
Atmospheric Plasma Spraying ◽  
Wire Mesh ◽  
Atmospheric Plasma ◽  
Mesh Structure ◽  
Tio2 Support

A series of catalytic coatings consisting of MnOx-CeO2 and TiO2 support were prepared by atmospheric plasma spraying, which was aimed at the application of selective catalytic reduction (SCR) of NOx. 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 20MnOx/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 NOx and particulate fliting simultaneously in industrial applications.

Experimental and modeling study of selective catalytic reduction of NOx with NH3 over wire mesh honeycomb catalysts

2010 ◽  
Vol 165 (3) ◽  
pp. 769-775 ◽  
Author(s):  
Hong Sun ◽  
Yun Shu ◽  
Xie Quan ◽  
Shuo Chen ◽  
Bo Pang ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Wire Mesh ◽  
Reduction Of Nox ◽  
Modeling Study

Effect of binary rare earth oxide on the properties of plasma sprayed Al2O3/TiO2 coatings

2017 ◽  
Vol 69 (5) ◽  
pp. 808-814
Author(s):  
Qingjun Ding ◽  
Bo Tian ◽  
Gai Zhao ◽  
Feng Wang ◽  
Huafeng Li ◽  
...  
Keyword(s):  
Rare Earth ◽  
Plasma Spraying ◽  
Adhesion Strength ◽  
Rare Earth Oxide ◽  
Atmospheric Plasma Spraying ◽  
Atmospheric Plasma ◽  
Micro Hardness ◽  
Content Type ◽  
Melting Degree ◽  
Binary Rare Earth

Purpose This study systematically investigated the effect of the binary rare earth oxide of La2O3 and Sm2O3 on the properties of the Al2O3/TiO2 (AT) coating, including phase transform, wear behavior, etc. Design/methodology/approach AT coatings mixed with different components of binary rare earth oxides of La2O3 and Sm2O3 are prepared by atmospheric plasma spraying. The adhesion strength, micro-hardness, phase transition and tribological behavior of coatings are systematically investigated. Findings The X-ray diffraction (XRD) analysis shows that phase transformation is obvious after spraying, and a-Al2O3 is almost translated into γ-Al2O3 when La2O3 and Sm2O3 are doped together. Meanwhile, solid solution generated between rare earth oxide and Al2O3/TiO2 coatings results in disappearance of TiO2 and rare earth oxide phase. The photos under the scanning electron microscope (SEM) indicate that binary rare earth oxide could increase the melting degree of powder and decrease porosity of coatings.The increasing of Sm2O3 rarely affect micro-hardness and adhesion strength, and the coating with 4 per cent Sm2O3 and 1 per cent La2O3 exhibits the best wear resistance and lowest friction coefficient among all the samples. Originality/value AT coatings mixed with different components of binary rare earth oxide of La2O3 and Sm2O3 are prepared by atmospheric plasma spraying. Binary rare earth oxide could increase the melting degree of powder and decrease porosity of AT coatings.

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