Residue hydroprocessing catalyst, method for making and use thereof

By synthesizing pseudoboehmite via carbonization and impregnating active metals on a polyimide support, the problems of metal agglomeration and uneven distribution in residue oil hydrogenation catalysts were solved, resulting in a highly efficient residue oil hydrogenation catalyst with excellent catalytic performance in residue oil treatment.

CN118179551BActive Publication Date: 2026-01-02CHINA PETROLEUM & CHEMICAL CORP +1
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Patent Information

Application Number
CN202211574276.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-12-08
Publication Date
2026-01-02
Estimated Expiration
2042-12-08

AI Technical Summary

Technical Problem

In existing residue hydrotreating catalysts, active metals are prone to agglomeration or uneven distribution. The formation of metal-oxygen-aluminum bonds during roasting affects catalytic efficiency, and traditional preparation methods suffer from environmental pollution and operational complexity.

Method used

Phobosite was synthesized by carbonization. By impregnating an active metal on a polyimide support and combining pH control with multiple carbonization reactions, a uniformly dispersed residue hydrogenation catalyst was prepared. Semiconductor materials were used to enhance metal dispersion and reduce electron migration efficiency, forming a heterojunction to improve catalytic activity.

Benefits of technology

The prepared catalyst has high metal loading, uniform dispersion and mechanical strength, suitable pore structure and surface acidity, and exhibits excellent performance in hydrotreating of residual oil, especially in desulfurization, denitrification, decarbonization and demetallization.

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Abstract

The application discloses a residual oil hydrogenation catalyst and a preparation method and application thereof. The preparation method of the catalyst comprises the following steps: impregnating an active metal solution C1 into a polyimide carrier, drying and calcining to obtain a metal / polyimide material; putting the obtained metal / polyimide material into a gelatinization solution, synthesizing a silicon and carbon-containing pseudo-boehmite wet filter cake, drying the silicon and carbon-containing pseudo-boehmite wet filter cake to obtain a silicon and carbon-containing pseudo-boehmite; shaping the obtained silicon and carbon-containing pseudo-boehmite, drying to obtain an intermediate; mixing the obtained intermediate with an active metal solution C2 for second impregnation, drying, and calcining in an oxygen-containing atmosphere to obtain the catalyst. The catalyst provided by the application is applied to residual oil hydrogenation treatment, and exhibits excellent catalytic performance in the desulfurization and denitrification processes, and also exhibits good catalytic capacity in the removal of residual carbon and metals.
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