Metallic monatomic molecular sieve composite catalyst, preparation method and application thereof

By loading Fe-NC species onto ZSM-23 molecular sieves to create a composite catalyst, the problem of preparing C1 liquid products from methane oxidation at low temperatures was solved, achieving high efficiency and low cost catalytic effect, and generating products such as CH3OH, HCOOH and HOCH2OOH.

CN122209451APending Publication Date: 2026-06-16CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEMICAL CORP
Filing Date
2024-12-13
Publication Date
2026-06-16

AI Technical Summary

⚠Technical Problem

Existing technologies struggle to efficiently catalyze the direct oxidation of methane to C1 liquid products at low temperatures, especially because oxygen molecules are difficult to activate the CH bonds in methane under mild conditions, resulting in low methane conversion efficiency and a tendency for the target product to be over-converted.

⚗Method used

A composite catalyst of metal single-atom molecular sieves, specifically Fe-NC species supported on ZSM-23 molecular sieves, was used to achieve the low-temperature oxidation of methane to prepare C1 liquid products by controlling the distribution of acidic sites and pore structure of the catalyst through the preparation method.

🎯Benefits of technology

This catalyst achieves highly efficient catalytic activation of methane below 80°C, generating C1 liquid products such as CH3OH, HCOOH, and HOCH2OOH. It is inexpensive, highly active, selective, and stable, and uses low-concentration hydrogen peroxide as an oxidant, ensuring high safety.

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Abstract

The application discloses a metal single-atom molecular sieve composite catalyst and a preparation method and application thereof. The metal single-atom molecular sieve composite catalyst comprises a molecular sieve and an active component; the molecular sieve is ZSM-23 molecular sieve; and the active component is an Fe-N-C species. The metal single-atom molecular sieve composite catalyst provided by the application is applied to a reaction of methane low-temperature oxidation for preparing C1 liquid products, and can realize direct oxidation of methane for preparing C1 liquid products under low-temperature conditions below 80 DEG C, and has outstanding catalytic activity, selectivity and good stability.
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