title: Preparation and catalytic activities of LaFeO3 and Fe2O3 for HMX thermal decomposition.
abstract: Perovskite-type LaFeO(3) and alpha-Fe(2)O(3) with high specific surface areas were directly prepared with appropriate stearic acid-nitrates ratios by a novel stearic acid solution combustion method. The obtained powders were characterized by XRD, FT-IR and XPS techniques. The catalytic activities of perovskite-type LaFeO(3) and alpha-Fe(2)O(3) for the thermal decomposition of octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) were investigated by TG and TG-EGA techniques. The experimental results show that the catalytic activity of perovskite-type LaFeO(3) was much higher than that of alpha-Fe(2)O(3) because of higher concentration of surface-adsorbed oxygen (O(ad)) and hydroxyl of LaFeO(3). The study points out a potential way to develop new and more active perovskite-type catalysts for the HMX thermal decomposition.
authors.affiliation: Department of Chemistry and the Institute for Chemical Physics, Beijing Institute of Technology, Beijing, PR China.
authors.forename: Zhi-Xian
authors.initials: ZX
authors.lastname: Wei
authors.forename: Yan-Qing
authors.initials: YQ
authors.lastname: Xu
authors.forename: Hai-Yan
authors.initials: HY
authors.lastname: Liu
authors.forename: Chang-Wen
authors.initials: CW
authors.lastname: Hu
mesh_terms: D001392:Azocines / Q000737:chemistry*; D002384:Catalysis; D005290:Ferric Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D006358:Hot Temperature; D010087:Oxides / Q000138:chemical synthesis / Q000737:chemistry*; D011208:Powders / Q000737:chemistry
chemical_list: D001392:Azocines; D005290:Ferric Compounds; D010087:Oxides; D011208:Powders; C518665:lanthanum iron oxide; C000499:ferric oxide; C007950:octogen