A nickel-iron-based electrothermal catalyst for oil fume purification, a preparation method and application thereof

By preparing a nickel-iron-based electrothermal catalyst, the problem of catalyst deactivation caused by uneven local heating was solved, achieving efficient oil fume purification and low secondary pollution, and improving catalytic activity and stability.

CN118341485BActive Publication Date: 2026-07-24HUAZHONG UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HUAZHONG UNIV OF SCI & TECH
Filing Date
2024-04-30
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

In existing oil fume purification technologies, catalysts are prone to sintering, coking, and deactivation due to uneven local heating, and low-temperature plasma-catalytic oxidation methods may generate secondary pollutants.

Method used

Nickel-iron-based electrothermal catalysts were prepared by electrodeposition. Fe3+, Ni2+ and cyanuric acid were deposited on the surface of nickel foam to form an iron-nickel organic framework material. The three-dimensional network porous structure of NiFe2O4 and Fe1Ni1-CA was generated by air calcination. The catalytic activity was improved by the electrothermal synergistic catalytic mechanism.

Benefits of technology

It achieves efficient oil fume purification of catalyst, avoids deactivation caused by uneven local heating, and improves catalytic activity through adsorption oxygen and lattice oxygen regulation mechanisms, thereby reducing the risk of secondary pollution.

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Abstract

The application discloses a nickel-iron-based electrothermal catalyst for oil fume purification and a preparation method and application thereof, and belongs to the technical field of catalysts. The method comprises the following steps: (1) under a solution environment, a chlorate of iron (III), a chlorate of nickel (II) and cyanuric acid are subjected to electrodeposition under a constant potential to form an iron-nickel organic framework material; and (2) the iron-nickel organic framework material is calcined in an air atmosphere to obtain the nickel-iron-based electrothermal catalyst for oil fume purification. The raw materials of the preparation process are easy to obtain, and the method is simple. The prepared catalyst has the advantages of rich active sites and high catalytic activity. In application, as a catalytic material for kitchen oil fume, the catalyst utilizes the Joule heating effect of an electric current, has a fast temperature rising rate and a uniform temperature distribution, and avoids problems of sintering and coking caused by uneven local heating and other inactivation problems. The application effectively avoids the shortcomings of traditional physical kitchen oil fume treatment methods, is more beneficial to the environment and human health, and has a good application prospect and economic benefits.
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