A catalyst with strong lewis acidity, its preparation method and application

By using acidic pH buffer etching and metal loading, strong Lewis acid sites are uniformly introduced onto the surface of the catalyst support, solving the problem of low conversion rate in the hydrogenation cracking reaction of non-aromatic hydrocarbons and achieving high conversion rate and fewer side reactions.

CN117797803BActive Publication Date: 2026-05-29CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEMICAL CORP
Filing Date
2022-09-26
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing technologies have room for improvement in the conversion rate of non-aromatic hydrocarbons in non-aromatic hydrocarbon hydrogenation cracking reactions, and the catalyst system suffers from problems such as low conversion rate and incomplete cracking.

Method used

By etching the metal oxide support with an acidic pH buffer, strong Lewis acid sites are uniformly introduced and loaded with metal components, forming a synergistic effect between strong Lewis acid and metal, which promotes the formation of carbocations and the β-fracture process.

Benefits of technology

It improves the conversion rate of non-aromatic hydrocarbon hydrogenation cracking reaction, enhances the synergistic effect between the support and metal components, reduces side reactions, and is simple to operate and easy to apply industrially.

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Abstract

The application discloses a catalyst with strong Lewis acidity and a preparation method and application thereof. The catalyst comprises an oxide carrier and at least one metal element, and is characterized by solid nuclear magnetic resonance technology using trimethyl phosphine as a probe molecule, and the catalyst has peaks in the range of -5 to -20 ppm. The catalyst provided by the application can be used in non-aromatic hydrocracking reaction, and has the characteristics of good synergistic effect, high conversion rate and few side reactions.
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