AUTHOR=Zhao Jun , Deng Nengmei 

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

JOURNAL=Frontiers in Chemistry

VOLUME=10

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=<p>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<sub>2</sub> NPs/h-BN was successfully prepared by <italic>in situ</italic> growth, and it was found that when 5 wt.% TiO<sub>2</sub> NPs/h-BN was added, the initial decomposition temperature of ammonium perchlorate (AP) decreased by 67.6°C. Due to the addition of TiO<sub>2</sub>, 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.</p>