A polycyclic aromatic hydrocarbon hydrogenation catalyst, a preparation method and application thereof

By forming oxygen vacancies and uniformly distributed metal clusters on a porous support, a polycyclic aromatic hydrocarbon (PAH) hydrogenation catalyst has been developed, solving the problems of insufficient PAH conversion and selectivity in existing technologies. This catalyst achieves highly efficient conversion of PAHs to monocyclic aromatic hydrocarbons and is suitable for PAH hydrogenation reactions.

CN115888705BActive Publication Date: 2026-07-24CHINA 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
2021-09-30
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Existing polycyclic aromatic hydrocarbon hydrogenation catalysts have shortcomings in terms of conversion rate and selectivity, resulting in easy loss of monocyclic aromatic hydrocarbons and difficulty in efficiently converting them into high-value-added products such as BTX.

Method used

The porous supported catalyst, characterized by electron paramagnetic resonance (EPR) technology, improves selective adsorption performance by treating the support under a reducing atmosphere and loading group VIII metals to form oxygen vacancies and uniformly distributed metal clusters, thereby regulating the charge density of the metal active sites.

Benefits of technology

It achieves highly selective conversion of polycyclic aromatic hydrocarbons to monocyclic aromatic hydrocarbons, reduces the loss of monocyclic aromatic hydrocarbons, improves the conversion rate, simplifies the preparation process, and facilitates industrial application.

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Abstract

The application discloses a polycyclic aromatic hydrocarbon hydrogenation catalyst and a preparation method and application thereof. The polycyclic aromatic hydrocarbon hydrogenation catalyst comprises a) a porous carrier, and b) at least one metal element selected from group VIII; the catalyst is characterized by electron paramagnetic resonance technology and peaks in the range of g=1.9-2.1. The catalyst provided by the application is used for polycyclic aromatic hydrocarbon hydrogenation reaction and has the characteristics of high conversion rate and selectivity and low loss of single-ring aromatic hydrocarbons.
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