Process for the preparation of a fenton catalyst with two lewis acid sites and an acidic microenvironment and uses thereof

CN122352257APending Publication Date: 2026-07-10BEIJING NORMAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING NORMAL UNIVERSITY
Filing Date
2026-04-27
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing heterogeneous Fenton catalysts have difficulty simultaneously improving the utilization rate of H2O2 and the degradation rate of pollutants under neutral conditions. The coordination between the dual Lewis acid sites and the acidic microenvironment is difficult to achieve, resulting in catalyst deactivation or limited improvement in H2O2 utilization.

Method used

By using clay catalysts modified with acidic microenvironment and dual Lewis acid sites, MMT-Fe-BA catalysts were prepared by loading iron, boron and carboxyl precursors on the clay surface. The active components and microstructure of the catalyst were controlled to achieve the synergistic effect of dual Lewis acid sites and acidic microenvironment.

Benefits of technology

The catalyst significantly improves the utilization rate of H2O2 and the removal efficiency of recalcitrant organic matter under neutral conditions, with an H2O2 utilization rate of 75.4% and a pollutant removal rate several times that of the traditional system. Furthermore, the catalyst exhibits good reusability.

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Abstract

The present application relates to a new type of heterogeneous Fenton catalyst and its use, in particular to a clay catalyst with an acidic microenvironment and double Lewis acid site modification and its use in catalyzing H2O2 to remove refractory organic matter in water. The heterogeneous Fenton catalyst of the present application is a clay modified with carboxyl functional groups and iron-boron double active sites, which can activate H2O2 under neutral conditions, efficiently remove various refractory organic matter in water, greatly improve the utilization rate of H2O2, have good reusability, and can effectively reduce the residual refractory organic matter and TOC in actual wastewater at the same time.
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