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TiO(2) NPs/h-BN: Preparation and catalytic activities of a novel AP catalyst

The thermal decomposition performance of an oxidizer directly determines the thrust and specific impulse properties of the solid propellant. Hexagonal boron nitride (h-BN) has the characteristics of high catalytic activity and good stability, which can improve the heat release and decomposition temp...

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Detalles Bibliográficos
Autores principales: Zhao, Jun, Deng, Nengmei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9354831/
https://www.ncbi.nlm.nih.gov/pubmed/35936082
http://dx.doi.org/10.3389/fchem.2022.947052
Descripción
Sumario:The thermal decomposition performance of an oxidizer directly determines the thrust and specific impulse properties of the solid propellant. Hexagonal boron nitride (h-BN) has the characteristics of high catalytic activity and good stability, which can improve the heat release and decomposition temperature of the oxidant, and then improve the energy performance of the propellant. In this study, a novel hybrid material TiO(2) NPs/h-BN was successfully prepared by in situ growth, and it was found that when 5 wt.% TiO(2) NPs/h-BN was added, the initial decomposition temperature of ammonium perchlorate (AP) decreased by 67.6°C. Due to the addition of TiO(2), the gap between the h-BN layers as well as the specific surface increased, which optimized its thermocatalytic performance, and it also proposed a catalytic mechanism for the thermal decomposition process of AP.