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Investigation of Different Apatites-Supported Co3O4 as Catalysts for N2O Decomposition
- Source :
- Catalysis Surveys from Asia. 25:168-179
- Publication Year :
- 2021
- Publisher :
- Springer Science and Business Media LLC, 2021.
-
Abstract
- Two types of apatite supports including hydroxyapatite (HAP) and fluorapatite (FAP) were prepared by the co-precipitation method. Supported Co catalysts with the above carriers were synthesized from Co(NO3)2·6H2O via the impregnation method. The catalytic activity for N2O decomposition was investigated using a continuous flowing microreactor system. The catalytic results demonstrated that the Co/HAP exhibited more excellent catalytic activity as well as the impurity gas (H2O, O2, and NO) resistance capability than the Co/FAP in the temperature range of 300–600 °C. Furthermore, the physicochemical properties of Co/HAP and Co/FAP were determined by several relevant characterization methods. The obtained experimental results revealed that Co/HAP possessed larger specific surface area, more ion-exchanged Co2+ and stronger oxygen desorption capacity than Co/FAP, which are the key factors for high N2O decomposition activity. Moreover, compared with Co/FAP, Co/HAP has not only more basic content, but also higher basic site density, which may be also conducive to enhance the electron donating ability of Co2+, thereby promoting the N2O catalytic decomposition.
- Subjects :
- Chemistry
Fluorapatite
02 engineering and technology
General Chemistry
Atmospheric temperature range
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Decomposition
Catalysis
Apatite
0104 chemical sciences
Chemical engineering
Impurity
visual_art
Desorption
Specific surface area
visual_art.visual_art_medium
0210 nano-technology
Subjects
Details
- ISSN :
- 15749266 and 15711013
- Volume :
- 25
- Database :
- OpenAIRE
- Journal :
- Catalysis Surveys from Asia
- Accession number :
- edsair.doi...........7e9185ee39fb077bd4a30d3f8872196a