Medium-entropy perovskite oxygen carrier and preparation method and application thereof

A simple coprecipitation method prepares a LasCoMnAlO9 perovskite oxygen carrier for hydrogen production, addressing low activity and instability issues, achieving high-purity hydrogen with improved structural stability and methane activity.

GB2624059BActive Publication Date: 2026-06-11TIANJIN UNIV
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Patent Information

Authority / Receiving Office
GB · GB
Patent Type
Patents
Current Assignee / Owner
TIANJIN UNIV
Filing Date
2023-06-08
Publication Date
2026-06-11

AI Technical Summary

Technical Problem

Existing perovskite oxygen carriers for hydrogen production by chemical-looping reforming of methane suffer from low methane reaction activity, non-ideal syngas selectivity, and structural instability, while their preparation methods are complex and not suitable for scale-up production.

Method used

A simple coprecipitation method using metallic nitrates and aqueous ammonia or sodium hydroxide/sodium carbonate solutions to prepare a LasCoMnAlO9 medium-entropy perovskite oxygen carrier, which is then calcined and used in a fluidized bed reactor for hydrogen production, with controlled pH and mixing conditions.

Benefits of technology

The method produces high-purity hydrogen with improved structural stability and methane activity, overcoming the limitations of existing carriers and preparation methods.

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Abstract

A preparation method of a medium-entropy perovskite oxygen carrier comprising: 1) preparing an aqueous solution from metallic nitrate serving as a raw material, performing a coprecipitation reaction w
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