A method for preparing an amphiphilic photocatalyst by loading metal oxide on carbon nitride and application thereof to a water-phase benzene hydroxylation reaction

By uniformly loading metal oxides onto the surface of carbon nitride to form a stable microemulsion, the mass transfer problem caused by the immiscibility of benzene and water is solved, achieving a highly efficient benzene hydroxylation reaction, reducing costs and improving the utilization rate of H2O2, which is in line with the concept of green chemistry.

CN118079981BActive Publication Date: 2026-06-19FUZHOU UNIV
1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
FUZHOU UNIV
Filing Date
2024-02-28
Publication Date
2026-06-19

AI Technical Summary

⚠Technical Problem

In the prior art, the immiscibility of benzene and water hinders the mass transfer process between the two phases during the reaction, making it difficult for hydroxyl radicals generated in the aqueous phase to be efficiently transferred to the benzene phase, reducing the utilization rate of H2O2 and the reactivity, and increasing the production cost.

⚗Method used

Amphiphilic photocatalysts were prepared by supporting metal oxides on carbon nitride. The metal oxides were uniformly loaded on the surface of carbon nitride through molten salt-assisted heat treatment to form good interfacial contact, promote photogenerated electron migration and efficient decomposition of H2O2. The catalyst retains its amphiphilic properties to promote the formation of stable microemulsions of water/benzene and improve the transfer efficiency of reactive oxygen species.

🎯Benefits of technology

Achieving efficient benzene hydroxylation in a pure aqueous phase improves the decomposition efficiency and utilization of hydrogen peroxide, reduces reaction costs, aligns with green chemistry principles, and has promising prospects for industrial application.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
Patent Text Reader

Abstract

This invention discloses a method for preparing an amphiphilic photocatalyst using carbon nitride-supported metal oxides and its application in the aqueous-phase benzene hydroxylation reaction. This catalyst not only retains the unique amphiphilicity of carbon nitride, improving the interfacial contact and mass transfer process between the water / benzene phases and promoting the rapid and efficient transfer of •OH generated in the aqueous phase to benzene to participate in the reaction, but also forms a good interfacial contact between the metal oxide and carbon nitride phases during molten salt heat treatment. Under illumination, photogenerated electrons can efficiently migrate from carbon nitride to the surface of the metal oxide, driving the rapid photo-Fenton reaction. Therefore, this catalyst exhibits excellent catalytic performance in the photocatalytic aqueous-phase benzene hydroxylation reaction to prepare phenol. This invention does not require the addition of additional organic solvents and can achieve a highly efficient benzene hydroxylation reaction in a pure aqueous phase, conforming to the concept of green chemistry and showing good prospects for industrial application.
Need to check novelty before this filing date? Find Prior Art