Catalyst for hydrogen production by reforming tar steam as well as preparation method and application of catalyst

By loading nickel and metal additives onto a cobalt-magnesium-aluminum composite spinel support, a bimetallic catalyst was developed, which solved the problems of high temperature and high energy consumption and easy carbon deposition of traditional nickel-based catalysts in tar steam reforming. This resulted in low-temperature and high-efficiency tar conversion and high hydrogen selectivity, extending catalyst life and simplifying the process.

CN121847149APending Publication Date: 2026-04-14MACAU UNIV OF SCI & TECH
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Patent Information

Application Number
CN202610010309.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-06
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

Traditional nickel-based catalysts have high reaction temperatures and high energy consumption in the tar steam reforming process. They are also prone to carbon buildup and deactivation, and have low hydrogen selectivity and yield, making it difficult to achieve efficient low-temperature tar conversion and stable operation.

Method used

A bimetallic active component is formed by loading nickel and specific metal additives (iron, zirconium, ruthenium) onto a cobalt-magnesium-aluminum composite spinel support. The catalyst is prepared by co-precipitation and impregnation methods, and the synergistic effect between the metals is used to optimize the active sites, reduce the reaction temperature and inhibit carbon deposition.

Benefits of technology

Achieving efficient conversion of tar components at lower temperatures improves hydrogen selectivity and yield, extends catalyst life, simplifies product separation processes, reduces energy consumption, and enhances process economy.

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Abstract

The invention discloses a catalyst for hydrogen production through tar steam reforming and a preparation method and application thereof. The catalyst comprises a cobalt-magnesium-aluminum composite spinel carrier and an active component loaded on the cobalt-magnesium-aluminum composite spinel carrier, the active component comprises nickel and at least one metal additive selected from iron, zirconium and ruthenium. The preparation method mainly comprises the following steps: preparing the carrier by adopting a coprecipitation method, loading the active component by adopting an impregnation method, and drying and reducing to obtain the final catalyst. The catalyst is used for tar component steam reforming hydrogen production reaction, especially for treating raw materials containing phenol and water vapor at 600-700 DEG C, tar conversion can be efficiently catalyzed, product gas rich in hydrogen can be generated, hydrogen selectivity is high, and almost no methane is generated. The catalyst has the advantages of high activity, good stability, strong carbon deposition resistance and the like, and is suitable for purification and high-value utilization of biomass pyrolysis tar.
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