Fenton-like composite catalyst as well as preparation method and application thereof

By using a composite catalyst of high-entropy spinel and modified carbon support, combined with gradient oxidation functional zoning, the activity and stability problems of existing Fenton-like catalysts in treating high-concentration, recalcitrant wastewater have been solved, achieving a highly efficient wastewater treatment effect.

CN122352269APending Publication Date: 2026-07-10HEFEI INSTITUTE OF PHYSICAL SCIENCE CHINESE ACADEMY OF SCIENCES
6 Cites 0 Cited by

Patent Information

Application Number
CN202610805638.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-05
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing Fenton-like catalysts have problems when treating high-concentration, recalcitrant organic wastewater from chemical and pharmaceutical industries, such as single active sites, low electron transfer efficiency, insufficient H2O2 utilization, easy secondary pollution caused by metal ion leaching, short service life, and difficulty in engineering. Furthermore, the Co3+ spin state in traditional Co3O4 catalysts limits catalytic activation efficiency.

Method used

A Fenton-like composite catalyst was prepared using high-entropy spinel and modified carbon support. Through a segmented calcination process and ozone combined with nitric acid treatment, a catalyst with multiple active sites and strong active centers was formed. In a fixed-bed reactor, a gradient oxidation functional zone was constructed to achieve the synergistic effect of multiple oxidation intensities and active sites.

Benefits of technology

It significantly improves the activity and stability of the catalyst, increases the utilization rate of H2O2, achieves efficient removal of recalcitrant organic matter in wastewater, enhances the biodegradability of wastewater, and meets the stable operation requirements of industrial fixed beds.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention belongs to the technical field of water treatment, and particularly discloses a Fenton-like composite catalyst as well as a preparation method and application thereof. Wherein the Fenton-like composite catalyst is prepared from the following components in parts by mass: 10-25 parts of high-entropy spinel, 60-80 parts of a carbon carrier, 8-15 parts of an adhesive and 1-2 parts of a pore forming agent, and the high-entropy spinel is a composite material formed by doping cobalt into transition metal. The high-entropy spinel in the catalyst regulates and controls Co < 3 + > to be converted from low spinning to high spinning through a high-entropy configuration, Co < 3d-O < 2p > orbital hybridization is strengthened, and ring opening and chain scission of pollutants such as benzene rings and heterocyclic rings are achieved. The Fenton-like composite catalyst is used as a catalytic filler of a fixed bed reactor, is used for removing pollutants in wastewater, constructs gradient oxidation, and enables different types of active species to cooperate in each gradient region, so that efficient degradation of various types of pollutants is realized, and the utilization efficiency of active oxygen is remarkably improved.
Need to check novelty before this filing date? Find Prior Art