Enhanced catalytic activity over MIL-100(Fe) loaded ceria catalysts for the selective catalytic reduction of NO x with NH 3 at low temperature

A systematic investigation of the effect of WO3 loading over V2O5/TiO2 catalysts was carried out for the selective catalytic reduction of NO by NH3. The characteristics were examined use BET surface area , X-ray diffractometry (XRD) , Temperature programmed desorption (TPD) of NH3 . It was fund that the WO3 species could interact with the TiO2 anatase phase to exhibits a high activity. With increasing WO3 content ,the activity of V-W/TiO2 for the selective catalytic reduction of NO by NH3 was improved at low temperatures in the range of 3～7%. The results showed that the adding of WO3 to V2O5/TiO2 could result in exposing acid sites of catalysts doped WO3 at low temperature. Furthermore, especially the catalytic activity of VW7Ti showed higher than 80% at 180 °C. However, the catalytic BET surface area and the mass of acid sites not play a leading role for improving low-temperature activity of VWTi in this paper.

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Local structural change and catalytic activity of Zr-doped amorphous CeTiOx for the low-temperature selective catalytic reduction of NO with NH3

Reaction Kinetics Mechanisms and Catalysis ◽

10.1007/s11144-018-1464-3 ◽

2018 ◽

Vol 125 (2) ◽

pp. 733-742 ◽

Cited By ~ 2

Author(s):

Seung-Hyeon Jo ◽

Soonok Kim ◽

Hong-Dae Kim ◽

Bora Jeong ◽

Heesoo Lee

Keyword(s):

Catalytic Activity ◽

Structural Change ◽

Low Temperature ◽

Selective Catalytic Reduction ◽

Catalytic Reduction ◽

Reduction Of No ◽

Local Structural Change

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Effect of ceria doping on catalytic activity and SO2 resistance of MnOx /TiO2 catalysts for selective catalytic reduction of NO with NH3 at low temperature

Aerosol and Air Quality Research ◽

10.4209/aaqr.2019.10.0546 ◽

2020 ◽

Author(s):

Qiulin Wang ◽

Jianjian Zhou ◽

Jianchao Zhang ◽

Hao Zhu ◽

Yuheng Feng ◽

...

Keyword(s):

Catalytic Activity ◽

Low Temperature ◽

Selective Catalytic Reduction ◽

Catalytic Reduction ◽

Reduction Of No ◽

So2 Resistance

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A Novel Catalytic Activity of Ce-Zr-Mn-OX Mixed Oxides for Low Temperature Selective Catalytic Reduction of NO with NH3

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.864-867.635 ◽

2013 ◽

Vol 864-867 ◽

pp. 635-639

Author(s):

Qiu Lin Zhang ◽

Zhong Xian Song ◽

Ping Ning ◽

Jun Jie Gu

Keyword(s):

Catalytic Activity ◽

Hydrothermal Synthesis ◽

Low Temperature ◽

Selective Catalytic Reduction ◽

Mixed Oxides ◽

Catalytic Reduction ◽

Synthesis Method ◽

Space Velocity ◽

Reduction Of No ◽

Different Temperatures

A Ce-Zr-Mn-Ox(CZM) catalyst has been discovered for selective catalytic reduction of NOxwith NH3in the presence of O2. In this paper, The catalysts of CZM with 10~50 wt% MnO2content and Ce-Zr-O2(CZ) catalyst are prepared by hydrothermal synthesis method. The catalytic activity of CZM catalysts at different temperatures, different space velocities and different ratios of NH3/NO are studied. The results show that the catalyst of CZM with 40 wt% MnO2content yields higher NO conversion at low temperature than others. This catalyst shows nearly 90% NOxconversion in a temperature range of 150°C~250 °C at a space velocity of 53000 h-1.

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