Sign in Subscribe
Nanotubes

Hydrophobic Molybdenum Catalysts Show Potential for Efficient Oxidative Desulfurization of Fuels

Strategic Insights

— 1 min read

Researchers from Lomonosov Moscow State University have made a breakthrough in developing hydrophobic molybdenum catalysts supported on halloysite nanotubes for highly efficient oxidative desulfurization of fuels in mild conditions. According to the study, the catalysts exhibit excellent properties, allowing for the complete oxidation of dibenzothiophene at a temperature as low as 40°C. The study's findings have significant implications for the development of more efficient and environmentally friendly fuel treatment technologies.

Key Takeaways:

  • The research developed new Mo-containing catalysts based on hydrophobic halloysite clays, which were applied for oxidative desulfurization in mild conditions.
  • The hydrophobic properties of the catalysts prevented the aggregation of particles in excess of the oxidizing agent, hydrogen peroxide, allowing the process to be carried out under mild conditions.
  • The study found that the longer the alkyl substituent and the more hydrophobic the support, the less aggregation of catalyst particles and the lower the oxidation temperature.
  • The researchers characterized the obtained materials and catalysts using low-temperature N2 adsorption-desorption, high-resolution TEM, XRF, TGA, FT-IR, and wetting edge angles techniques.
  • The study concluded that under selected optimal conditions, dibenzothiophene was completely oxidized already at 40°C, and the catalyst could be regenerated and reused for at least 5 cycles.
  • The research has been peer-reviewed and published in Applied Clay Science, a journal of Elsevier.

Statistics:

  • The catalysts were able to oxidize dibenzothiophene at a temperature as low as 40°C.
  • The oxidation reaction was completed in 30 minutes.
  • The catalysts were able to be regenerated and reused for at least 5 cycles.
  • The wetting edge angle increased from 40.5 degrees to 137.6 degrees after modifying halloysite clays with alkylsilane.
  • The study used a mass ratio of catalyst to sulfur of 1:4:1 (C8-Hal-Mo 1.0 mass%, 30 min, H2O2:S 4:1).

Sources:

  • Hydrophobic Molybdenum Catalysts Supported On Halloysite Nanotubes for Highly Efficient Oxidative Desulfurization of Fuels In Mild Conditions. Applied Clay Science, 2025;276.
  • NewsRx. New Nanotubes Study Findings Reported from Lomonosov Moscow State University (Hydrophobic Molybdenum Catalysts Supported On Halloysite Nanotubes for Highly Efficient Oxidative Desulfurization of Fuels In Mild Conditions). Nanotechnology Weekly. November 3, 2025; p 2402.

Read more