PlumX Metrics
Embed PlumX Metrics

Highly Dispersed MnO Nanoparticles on Shape-Controlled SiO Spheres for Ecofriendly Selective Allylic Oxidation of Cyclohexene

Catalysis Letters, ISSN: 1572-879X, Vol: 150, Issue: 10, Page: 3023-3035
2020
  • 8
    Citations
  • 0
    Usage
  • 8
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

Article Description

Abstract: Shape-controlled metal nanomaterials are considered as a unique class of catalysts because of their synergistic size- and shape-dependent catalytic properties. This work reports the synthesis of a novel size- and shape-controlled catalyst, consisting of highly dispersed MnO nanoparticles (average particle size of 4.5 nm) on shape-controlled SiO nanospheres (250–300 nm) for selective cyclohexene oxidation using air as the oxidant under solvent- and base-free conditions. The MnO/SiO catalyst exhibited an excellent cyclohexene conversion (~ 92%) with a high selectivity (~ 96%) to the allylic products (2-cyclohexene-ol and 2-cyclohexene-one) under mild conditions, outperforming various SiO supported CoO, FeO, and CuO catalysts. The better performance of shape-controlled MnO/SiO nanocatalyst is due to high redox nature of Mn, uniform dispersion of smaller sized MnO nanoparticles, and synergetic interaction between MnO and SiO spheres, as evidenced by XPS and TEM studies. Further, the MnO/SiO catalyst could be reused at least 5 times for selective cyclohexene oxidation with a negligible loss in its catalytic performance, indicating the excellent stability of shape-controlled metal nanocatalysts in organic synthesis under economically viable and mild conditions. Graphic Abstract: Shape-controlled MnO/SiO nanocatalyst shows an excellent catalytic activity and a high selectivity to allylic products in the oxidation of cyclohexene under mild conditions[Figure not available: see fulltext.]

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know