Catalytic effects of p-phenylene-bridged methylated binuclear ferrocenes on thermal decomposition of the main component of composite solid propellants
Date
2018Author
Carreño, Gustavo [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada CNAP, Camino Piramide 5750, Santiago, Chile]
Ríos, Paulina L. [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada]
Camarada, María Belén [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada CNAP]
Morales-Verdejo, César [Univ Mayor, Fac Ciencias, Ctr Nanotecnol Aplicada CNAP]
Povea, Paula
Luis Arroyo, Juan
Norambuena, Angel
Chávez, Ivonne
Manuel Manríquez, Juan
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Abstract
This contribution describes the catalytic activity of homobimetallic complexes derived from p-phenylene on the thermal decomposition of ammonium perchlorate (abbreviated as AP). The complexes, [CpFe-p-Ph-FeCp] (1), [Cp*Fe-p-Ph-FeCp] (2), [CpFe-p-Ph'-FeCp] (3) and [Cp*Fe-p-Ph'-FeCp] (4) (with p-Ph: p-Bis(3,4-dimethylcyclopentadienyl)benzene and p-Ph': p-Bis(2,3,4,5-tetramethylcyclopentadienyl)benzene), were compared with the catalytic activity of the catocene (cat) complex previously reported. Furthermore, in order to clarify the mechanism of the bimetallic compounds, it was tested ferrocene (Fe), frequently used as burning rate (BR) catalyst on the thermal decomposition of AP. The synthetized compounds shown a shift on the peak temperature to lower values and an increase in the released heats during thermal decomposition of AP. The burning rate catalytic activity of the compounds on thermal decomposition of AP were examined by thermogravimetry and differential scanning calorimetry techniques. Theoretical calculations of these compounds were carried out to gain further understanding of these catalysts systems.
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