Experimental parameters for the preparation of Mn/TiO2 catalysts by ultrasonic spray pyrolysis method for selective catalytic reduction of NOx at low temperature
Mn/TiO2 series selective catalytic reduction (SCR) catalysts with regular spherical shape could be obtained by ultrasonic spray pyrolysis method. The investigation of experimental parameters, such as decomposition temperature and the type and flow rate of carrier gas, showed that a high and stable N...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-12-01
|
| Series: | Chemical Physics Impact |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667022423000981 |
| _version_ | 1797400862681726976 |
|---|---|
| author | Yingqi Song Jingyi Han Xiaojia Jiang Yuhai Sun Boqiong Jiang |
| author_facet | Yingqi Song Jingyi Han Xiaojia Jiang Yuhai Sun Boqiong Jiang |
| author_sort | Yingqi Song |
| collection | DOAJ |
| description | Mn/TiO2 series selective catalytic reduction (SCR) catalysts with regular spherical shape could be obtained by ultrasonic spray pyrolysis method. The investigation of experimental parameters, such as decomposition temperature and the type and flow rate of carrier gas, showed that a high and stable NOx conversion at 70% could be achieved at 180 °C when the ultrasonic spray pyrolysis temperature was 500 °C and N2 was used as a carrier gas with a flow rate of 2 L/min. The physical and chemical properties of the catalysts were characterized by X-ray diffraction, SEM, and H2-TPR, revealing that a regular spherical structure, a small amount of Mn2O3 crystals, and high redox ability were the important factors affecting the activity of the catalyst. With these properties, Mn(0.5)/TiO2 (500 °C, N2, 2 L/min) exhibited more than 90% conversion at 240 °C with N2 selectivity above 96%. |
| first_indexed | 2024-03-09T02:01:42Z |
| format | Article |
| id | doaj.art-59e975f645f4425f90694f56696e8ccf |
| institution | Directory Open Access Journal |
| issn | 2667-0224 |
| language | English |
| last_indexed | 2024-03-09T02:01:42Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Chemical Physics Impact |
| spelling | doaj.art-59e975f645f4425f90694f56696e8ccf2023-12-08T04:46:23ZengElsevierChemical Physics Impact2667-02242023-12-017100258Experimental parameters for the preparation of Mn/TiO2 catalysts by ultrasonic spray pyrolysis method for selective catalytic reduction of NOx at low temperatureYingqi Song0Jingyi Han1Xiaojia Jiang2Yuhai Sun3Boqiong Jiang4Environmental Science and Engineering school, Zhejiang Gongshang University, Hangzhou 310018, PR China; Instrumental Analysis Center, Zhejiang Gongshang University, Hangzhou 310018, PR ChinaEnvironmental Science and Engineering school, Zhejiang Gongshang University, Hangzhou 310018, PR China; Zhejiang Province Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou 310012, PR ChinaEnvironmental Science and Engineering school, Zhejiang Gongshang University, Hangzhou 310018, PR China; Instrumental Analysis Center, Zhejiang Gongshang University, Hangzhou 310018, PR ChinaEnvironmental Science and Engineering school, Zhejiang Gongshang University, Hangzhou 310018, PR China; Zhejiang Province Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou 310012, PR China; Instrumental Analysis Center, Zhejiang Gongshang University, Hangzhou 310018, PR ChinaEnvironmental Science and Engineering school, Zhejiang Gongshang University, Hangzhou 310018, PR China; Zhejiang Province Key Laboratory of Solid Waste Treatment and Recycling, Hangzhou 310012, PR China; Instrumental Analysis Center, Zhejiang Gongshang University, Hangzhou 310018, PR China; Corresponding author at: School of Environmental and Engineering, Zhejiang Gongshang University, Hangzhou 310018, PR ChinaMn/TiO2 series selective catalytic reduction (SCR) catalysts with regular spherical shape could be obtained by ultrasonic spray pyrolysis method. The investigation of experimental parameters, such as decomposition temperature and the type and flow rate of carrier gas, showed that a high and stable NOx conversion at 70% could be achieved at 180 °C when the ultrasonic spray pyrolysis temperature was 500 °C and N2 was used as a carrier gas with a flow rate of 2 L/min. The physical and chemical properties of the catalysts were characterized by X-ray diffraction, SEM, and H2-TPR, revealing that a regular spherical structure, a small amount of Mn2O3 crystals, and high redox ability were the important factors affecting the activity of the catalyst. With these properties, Mn(0.5)/TiO2 (500 °C, N2, 2 L/min) exhibited more than 90% conversion at 240 °C with N2 selectivity above 96%.http://www.sciencedirect.com/science/article/pii/S2667022423000981Low-temperature selective catalytic reductionUltrasonic spray pyrolysisMn-based catalystPreparation parametersOxidation-reduction ability |
| spellingShingle | Yingqi Song Jingyi Han Xiaojia Jiang Yuhai Sun Boqiong Jiang Experimental parameters for the preparation of Mn/TiO2 catalysts by ultrasonic spray pyrolysis method for selective catalytic reduction of NOx at low temperature Chemical Physics Impact Low-temperature selective catalytic reduction Ultrasonic spray pyrolysis Mn-based catalyst Preparation parameters Oxidation-reduction ability |
| title | Experimental parameters for the preparation of Mn/TiO2 catalysts by ultrasonic spray pyrolysis method for selective catalytic reduction of NOx at low temperature |
| title_full | Experimental parameters for the preparation of Mn/TiO2 catalysts by ultrasonic spray pyrolysis method for selective catalytic reduction of NOx at low temperature |
| title_fullStr | Experimental parameters for the preparation of Mn/TiO2 catalysts by ultrasonic spray pyrolysis method for selective catalytic reduction of NOx at low temperature |
| title_full_unstemmed | Experimental parameters for the preparation of Mn/TiO2 catalysts by ultrasonic spray pyrolysis method for selective catalytic reduction of NOx at low temperature |
| title_short | Experimental parameters for the preparation of Mn/TiO2 catalysts by ultrasonic spray pyrolysis method for selective catalytic reduction of NOx at low temperature |
| title_sort | experimental parameters for the preparation of mn tio2 catalysts by ultrasonic spray pyrolysis method for selective catalytic reduction of nox at low temperature |
| topic | Low-temperature selective catalytic reduction Ultrasonic spray pyrolysis Mn-based catalyst Preparation parameters Oxidation-reduction ability |
| url | http://www.sciencedirect.com/science/article/pii/S2667022423000981 |
| work_keys_str_mv | AT yingqisong experimentalparametersforthepreparationofmntio2catalystsbyultrasonicspraypyrolysismethodforselectivecatalyticreductionofnoxatlowtemperature AT jingyihan experimentalparametersforthepreparationofmntio2catalystsbyultrasonicspraypyrolysismethodforselectivecatalyticreductionofnoxatlowtemperature AT xiaojiajiang experimentalparametersforthepreparationofmntio2catalystsbyultrasonicspraypyrolysismethodforselectivecatalyticreductionofnoxatlowtemperature AT yuhaisun experimentalparametersforthepreparationofmntio2catalystsbyultrasonicspraypyrolysismethodforselectivecatalyticreductionofnoxatlowtemperature AT boqiongjiang experimentalparametersforthepreparationofmntio2catalystsbyultrasonicspraypyrolysismethodforselectivecatalyticreductionofnoxatlowtemperature |