Catalyst for Lithium Perchlorate Decomposition

Abstract

The use of metal oxide additives to modify the ability of solid propellants and other energetic materials has been the topic of much study. This work reports the enhancement of the decomposition of lithium perchlorate (LiClO 4 ) by means of employing Ce x Cu 1−x O 1x as a catalyst. The Ce x Cu 1−x O 1x composite catalysts synthesized through the collosol-gelling method with different mole ratios were designed to strongly enhance LiClO 4 decomposition through comparison with blank tests. The synthesized catalysts were characterized by scanning electron microscope, Brunauer-Emmett-Teller, x-ray diffraction, x-ray photoelectron spectra, and H 2 -TPR analyses. Results showed that a solid solution was formed in the Ce x Cu 1−x O 1x catalysts. The Ce x Cu 1−x O 1x composite catalysts showed more lattice defects, smaller crystallites, larger surface area, and more oxygen vacancies than pure CuO and CeO 2 samples because of the interaction of Ce and Cu ions. Lattice defects, especially the reduced surface sites (that is, Ce 3 , Cu , and oxygen vacancies), played dominant roles in catalytic reactions of LiClO 4 decomposition. In addition, a hypothetical mechanism for LiClO 4 catalytic decomposition of the Ce x Cu 1−x O 1x catalyst was proposed.

Review of the Influence of Poisson's Ratio on the Solid Propellant’s Structure and Properties

“…Zhang Hailian, et al [7]developed a viscoelastic incremental finite element method applied to incompressible materials to study the effect of distribution of Poisson's ratio on solid propellant grain's structural analysis and studied random viscoelastic finite element of Poisson's ratio. They gave second-order perturbation equations of variant finite element by the local average method of discrete random field.…”

Effect of AP distribution on energy release characteristics and functional force of HMX/AP/Al explosives

“…When the explosion formula is in zero oxygen equilibrium, the heat released by the explosion is the highest, and the work effect is the greatest [1][2][3]. Common oxidants include ammonium perchlorate(AP), potassium perchlorate(KP), and lithium perchlorate(LiP) [4][5][6]. AP stands out among them because to its high effective oxygen content, excellent physical stability, and use in mixed explosives [7].…”