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
View PDF 3 Cites 0 Cited by

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.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 00000001_0000
    Figure 00000001_0000
  • Figure 00000002_0000
    Figure 00000002_0000
  • Figure 00000002_0001
    Figure 00000002_0001
Patent Text Reader

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
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Chemical-looping methane partial oxidation oxygen carrier, preparation method and applications thereof

    CN111087026A

  • Trichoperovskite type composite metal oxide oxygen carrier and preparation method and application thereof

    CN115626666A

  • Perovskite oxides for thermochemical conversion of carbon dioxide

    US10946362B1