A gradient eggshell type nickel-based hydrogenation catalyst, a preparation method and application thereof
By preparing a gradient eggshell-type nickel-based hydrogenation catalyst, the problems of uneven distribution of active components and insufficient thermal management in the process of aromatic hydrogenation were solved, achieving efficient and stable aromatic conversion and side reaction suppression, with advantages of long life and low cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA UNIV OF PETROLEUM (EAST CHINA)
- Filing Date
- 2026-04-03
- Publication Date
- 2026-07-17
AI Technical Summary
Existing eggshell-type nickel-based catalysts face challenges in industrial applications, such as difficulty in controlling the uniformity of active component distribution, controllability of shell thickness, and maintaining activity over a wide temperature range. These issues lead to frequent side reactions during aromatic hydrogenation and insufficient catalyst stability.
A gradient eggshell-type nickel-based hydrogenation catalyst is adopted. A wettability barrier is formed by pretreatment of the support with a hydrophobic reagent. Combined with multi-metal promoters, the active components are distributed in a gradient on the surface of the support, the diffusion path and thermal management are optimized, and promoters such as Cu, Fe, La, Ce, Co, W and Zn are introduced to enhance the catalytic performance.
It significantly improves the aromatic hydrocarbon conversion and selectivity of the catalyst, suppresses side reactions, extends catalyst life, reduces production costs, and adapts to the needs of various catalytic reactions.
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