AUTHOR=Zhao Jun , Deng Nengmei 

TITLE=TiO2 NPs/h-BN: Preparation and catalytic activities of a novel AP catalyst

JOURNAL=Frontiers in Chemistry

VOLUME=Volume 10 - 2022

YEAR=2022

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2022.947052

DOI=10.3389/fchem.2022.947052

ISSN=2296-2646

ABSTRACT=The thermal decomposition performance of oxidizer directly determines the thrust and specific impulse properties of 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 paper, a novel hybrid material TiO2NPs/h-BN was successfully prepared by in situ growth, and it was found that when 5 wt.-% TiO2NPs/h-BN was added, the initial decomposition temperature of ammonium perchlorate (AP) decreased by 67.6 °C. Due to the addition of TiO2, the gap between the h-BN layers increases and the specific surface increased, which optimized its thermocatalytic performance, and also proposed a catalytic mechanism for the thermal decomposition process of AP.