▎ 摘　　要

NOVELTY - Potassium-doped magnetic hematite coupling graphene combustion catalyst obtained by mixing graphene oxide, metal salt precursor and potassium-containing precipitant, dissolving in a mixed solvent of ethylene glycol and water, and subjecting to a hydrothermal reaction. USE - The catalyst is useful as combustion catalyst for propellant, and catalyzing solid propellant combustion (claimed). ADVANTAGE - The catalyst adopts conventional reagents, does not need to add any surfactant; has simple process, readily available raw materials; can be prepared in batches; reduces the sensitivity of the propellant components; and improves the decomposition efficiency of the main components of the propellant. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for potassium-doped maghemite coupling graphene composite combustion catalyst prepared by above method. The crystal form of iron oxide in the catalyst is γ-type, and the microscopic appearance of the catalyst is in the shape of flower clusters, and is doped with potassium element.