Efficient anti-poisoning PTA waste gas oxidation catalyst and preparation method thereof

CN119608149AActive Publication Date: 2025-03-14SINOCAT ENVIRONMENTAL TECH CO LTD
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Patent Information

Application Number
CN202411806266.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-10
Publication Date
2025-03-14
Estimated Expiration
2044-12-10

AI Technical Summary

Technical Problem

In the prior art, catalysts have low performance and are prone to poisoning when removing halogen-containing VOCs, making it difficult to meet economical and environmentally friendly catalyst needs.

Method used

By coating and calcining the manganese precursor with an inert material, and combining with competitive adsorption method, a manganese composite oxide active center with a core-shell structure is prepared to form an efficient non-precious metal anti-halogen poisoning catalytic oxidation catalyst.

Benefits of technology

It has achieved efficient removal of halogen VOCs in PTA waste gas, improved the stability and anti-toxicity of the catalyst, reduced the use of nitrate and wastewater, and has a green and convenient preparation process.

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Abstract

The invention discloses a high-efficiency anti-poisoning PTA waste gas oxidation catalyst and a preparation method thereof, and relates to the technical field of industrial waste gas oxidation catalysts, the catalyst comprises soluble transition metal salt, a competitive adsorbent, manganese salt and an inert material as precursors, and a manganese-based catalytic oxidation catalyst is synthesized by adopting a competitive adsorption impregnation method, a manganese composite oxide active center with a core-shell structure is realized, a halogen VOCs decomposition product is prevented from being combined with active manganese dioxide through the high-stability manganese composite oxide, it is ensured that the catalyst has efficient catalytic efficiency and excellent stability, the whole technological process is short, operation is controllable, and no waste acid is discharged.
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Citation Information

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    CN115155579A

  • Manufacturing method of transition metal-doped manganese oxide materials for li ion adsorption

    KR1020150084293A

  • Enhanced NOx trap having increased durability

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