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Highly stable Co3O4 nanoparticles-assembled microrods derived from MOF for efficient total propane oxidation.
- Source :
-
Journal of Materials Science . Apr2020, Vol. 55 Issue 12, p5190-5202. 13p. 2 Diagrams, 2 Charts, 11 Graphs. - Publication Year :
- 2020
-
Abstract
- Co3O4 nanoparticles-assembled microrods (Mic-Co3O4) were successfully synthesized with the precursor of Co-BTC (BTC = 1,3,5-benzenetricarboxylic acid) and applied for efficient propane (C3H8) oxidation. It shows a higher reaction rate of 4.14 μmolC3H8 gcat−1 s−1 at 250 °C, when it is only 1.18 μmolC3H8 gcat−1 s−1 obtained over Co3O4 nanoparticles (Np-Co3O4) via direct calcination of cobalt nitrate. Moreover, Mic-Co3O4 remains the original morphology of Co-BTC MOF, and the keeping pores enhance the microrod rigidity, hindering nanoparticles growth and thus resulting in superior thermal stability. After 12 h of durability test at 500 °C, the size of Mic-Co3O4 nanoparticles increases slightly from 62 to 70 nm, whereas it is from 97 to 130 nm for Np-Co3O4. Meanwhile, the calcination of Co-BTC precursor can induce large amounts of surface Co2+, favoring activation of adsorptive oxygen species. This can promote oxygen mobility, which is helpful for total propane oxidation. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00222461
- Volume :
- 55
- Issue :
- 12
- Database :
- Academic Search Index
- Journal :
- Journal of Materials Science
- Publication Type :
- Academic Journal
- Accession number :
- 141513867
- Full Text :
- https://doi.org/10.1007/s10853-020-04368-1